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  • Internationalize WebCenter Portal - Content Presenter

    - by Stefan Krantz
    Lately we have been involved in engagements where internationalization has been holding the project back from success. In this post we are going to explain how to get Content Presenter and its editorials to comply with the current selected locale for the WebCenter Portal session. As you probably know by now WebCenter Portal leverages the Localization support from Java Server Faces (JSF), in this post we will assume that the localization is controlled and enforced by switching the current browsers locale between English and Spanish. There is two main scenarios in internationalization of a content enabled pages, since Content Presenter offers both presentation of information as well as contribution of information, in this post we will look at how to enable seamless integration of correct localized version of the back end content file and how to enable the editor/author to edit the correct localized version of the file based on the current browser locale. Solution Scenario 1 - Localization aware content presentation Due to the amount of steps required to implement the enclosed solution proposal I have decided to share the solution with you in group components for each facet of the solution. If you want to get more details on each step, you can review the enclosed components. This post will guide you through the steps of enabling each component and what it enables/changes in each section of the system. Enable Content Presenter Customization By leveraging a predictable naming convention of the data files used to hold the content for the Content Presenter instance we can easily develop a component that will dynamically switch the name out before presenting the information. The naming convention we have leverage is the industry best practice by having a shared identifier as prefix (ContentABC) and a language enabled suffix (_EN) (_ES). So the assumption is that each file pair in above example should look like following:- English version - (ContentABC_EN)- Spanish version - (ContentABC_ES) Based on above theory we can now easily regardless of the primary version assigned to the content presenter instance switch the language out by using the localization support from JSF. Below java bean (oracle.webcenter.doclib.internal.view.presenter.NLSHelperBean) is enclosed in the customization project available for download at the bottom of the post: 1: public static final String CP_D_DOCNAME_FORMAT = "%s_%s"; 2: public static final int CP_UNIQUE_ID_INDEX = 0; 3: private ContentPresenter presenter = null; 4:   5:   6: public NLSHelperBean() { 7: super(); 8: } 9:   10: /** 11: * This method updates the configuration for the pageFlowScope to have the correct datafile 12: * for the current Locale 13: */ 14: public void initLocaleForDataFile() { 15: String dataFile = null; 16: // Checking that state of presenter is present, also make sure the item is eligible for localization by locating the "_" in the name 17: if(presenter.getConfiguration().getDatasource() != null && 18: presenter.getConfiguration().getDatasource().isNodeDatasource() && 19: presenter.getConfiguration().getDatasource().getNodeIdDatasource() != null && 20: !presenter.getConfiguration().getDatasource().getNodeIdDatasource().equals("") && 21: presenter.getConfiguration().getDatasource().getNodeIdDatasource().indexOf("_") > 0) { 22: dataFile = presenter.getConfiguration().getDatasource().getNodeIdDatasource(); 23: FacesContext fc = FacesContext.getCurrentInstance(); 24: //Leveraging the current faces contenxt to get current localization language 25: String currentLocale = fc.getViewRoot().getLocale().getLanguage().toUpperCase(); 26: String newDataFile = dataFile; 27: String [] uniqueIdArr = dataFile.split("_"); 28: if(uniqueIdArr.length > 0) { 29: newDataFile = String.format(CP_D_DOCNAME_FORMAT, uniqueIdArr[CP_UNIQUE_ID_INDEX], currentLocale); 30: } 31: //Replacing the current Node datasource with localized datafile. 32: presenter.getConfiguration().getDatasource().setNodeIdDatasource(newDataFile); 33: } 34: } With this bean code available to our WebCenter Portal implementation we can start the next step, by overriding the standard behavior in content presenter by applying a MDS Taskflow customization to the content presenter taskflow, following taskflow customization has been applied to the customization project attached to this post:- Library: WebCenter Document Library Service View- Path: oracle.webcenter.doclib.view.jsf.taskflows.presenter- File: contentPresenter.xml Changes made in above customization view:1. A new method invocation activity has been added (initLocaleForDataFile)2. The method invocation invokes the new NLSHelperBean3. The default activity is moved to the new Method invocation (initLocaleForDataFile)4. The outcome from the method invocation goes to determine-navigation (original default activity) The above changes concludes the presentation modification to support a compatible localization scenario for a content driven page. In addition this customization do not limit or disables the out of the box capabilities of WebCenter Portal. Steps to enable above customization Start JDeveloper and open your WebCenter Portal Application Select "Open Project" and include the extracted project you downloaded (CPNLSCustomizations.zip) Make sure the build out put from CPNLSCustomizations project is a dependency to your Portal project Deploy your Portal Application to your WC_CustomPortal managed server Make sure your naming convention of the two data files follow above recommendation Example result of the solution: Solution Scenario 2 - Localization aware content creation and authoring As you could see from Solution Scenario 1 we require the naming convention to be strictly followed, this means in the hands of a user with limited technology knowledge this can be one of the failing links in this solutions. Therefore I strongly recommend that you also follow this part since this will eliminate this risk and also increase the editors/authors usability with a magnitude. The current WebCenter Portal Architecture leverages WebCenter Content today to maintain, publish and manage content, therefore we need to make few efforts in making sure this part of the architecture is on board with our new naming practice and also simplifies the creation of content for our end users. As you probably remember the naming convention required a prefix to be common so I propose we enable a new component that help you auto name the content items dDocName (this means that the readable title can still be in a human readable format). The new component (WCP-LocalizationSupport.zip) built for this scenario will enable a couple of things: 1. A new service where a sequential number can be generate on request - service name: GET_WCP_LOCALE_CONTENTID 2. The content presenter is leveraging a specific function when launching the content creation wizard from within Content Presenter. Assumption is that users will create the content by clicking "Create Web Content" button. When clicking the button the wizard opened is actually running in side of WebCenter Content server, file executed (contentwizard.hcsp). This file uses JSON commands that will generate operations in the content server, I have extend this file to create two identical data files instead of one.- First it creates the English version by leveraging the new Service and a Global Rule to set the dDocName on the original check in screen, this global rule is available in a configuration package attached to this blog (NLSContentProfileRule.zip)- Secondly we run a set of JSON javascripts to create the Spanish version with the same details except for the name where we replace the suffix with (_ES)- Then content creation wizard ends with its out of the box behavior and assigns the Content Presenter instance the English versionSee Javascript markup below - this can be changed in the (WCP-LocalizationSupport.zip/component/WCP-LocalizationSupport/publish/webcenter) 1: //---------------------------------------A-TEAM--------------------------------------- 2: WCM.ContentWizard.CheckinContentPage.OnCheckinComplete = function(returnParams) 3: { 4: var callback = WCM.ContentWizard.CheckinContentPage.checkinCompleteCallback; 5: WCM.ContentWizard.ChooseContentPage.OnSelectionComplete(returnParams, callback); 6: // Load latest DOC_INFO_SIMPLE 7: var cgiPath = DOCLIB.config.httpCgiPath; 8: var jsonBinder = new WCM.Idc.JSONBinder(); 9: jsonBinder.SetLocalDataValue('IdcService', 'DOC_INFO_SIMPLE'); 10: jsonBinder.SetLocalDataValue('dID', returnParams.dID); 11: jsonBinder.Send(cgiPath, $CB(this, function(http) { 12: var ret = http.GetResponseText(); 13: var binder = new WCM.Idc.JSONBinder(ret); 14: var dDocName = binder.GetResultSetValue('DOC_INFO', 'dDocName', 0); 15: if(dDocName.indexOf("_") > 0){ 16: var ssBinder = new WCM.Idc.JSONBinder(); 17: ssBinder.SetLocalDataValue('IdcService', 'SS_CHECKIN_NEW'); 18: //Additional Localization dDocName generated 19: ssBinder.SetLocalDataValue('dDocName', getLocalizedDocName(dDocName, "es")); 20: ssBinder.SetLocalDataValue('primaryFile', 'default.xml'); 21: ssBinder.SetLocalDataValue('ssDefaultDocumentToken', 'SSContributorDataFile'); 22:   23: for(var n = 0 ; n < binder.GetResultSetFields('DOC_INFO').length ; n++) { 24: var field = binder.GetResultSetFields('DOC_INFO')[n]; 25: if(field != 'dID' && 26: field != 'dDocName' && 27: field != 'dID' && 28: field != 'dReleaseState' && 29: field != 'dRevClassID' && 30: field != 'dRevisionID' && 31: field != 'dRevLabel') { 32: ssBinder.SetLocalDataValue(field, binder.GetResultSetValue('DOC_INFO', field, 0)); 33: } 34: } 35: ssBinder.Send(cgiPath, $CB(this, function(http) {})); 36: } 37: })); 38: } 39:   40: //Support function to create localized dDocNames 41: function getLocalizedDocName(dDocName, lang) { 42: var result = dDocName.replace("_EN", ("_" + lang)); 43: return result; 44: } 45: //---------------------------------------A-TEAM--------------------------------------- 3. By applying the enclosed NLSContentProfileRule.zip, the check in screen for DataFile creation will have auto naming enabled with localization suffix (default is English)You can change the default language by updating the GlobalNlsRule and assign preferred prefix.See Rule markup for dDocName field below: <$executeService("GET_WCP_LOCALE_CONTENTID")$><$dprDefaultValue=WCP_LOCALE.LocaleContentId & "_EN"$> Steps to enable above extensions and configurations Install WebCenter Component (WCP-LocalizationSupport.zip), via the AdminServer in WebCenter Content Administration menus Enable the component and restart the content server Apply the configuration bundle to enable the new Global Rule (GlobalNlsRule), via the WebCenter Content Administration/Config Migration Admin New Content Creation Experience Result Content EditingContent editing will by default be enabled for authoring in the current select locale since the content file is selected by (Solution Scenario 1), this means that a user can switch his browser locale and then get the editing experience adaptable to the current selected locale. NotesA-Team are planning to post a solution on how to inline switch the locale of the WebCenter Portal Session, so the Content Presenter, Navigation Model and other Face related features are localized accordingly. Content Presenter examples used in this post is an extension to following post:https://blogs.oracle.com/ATEAM_WEBCENTER/entry/enable_content_editing_of_iterative Downloads CPNLSCustomizations.zip - WebCenter Portal, Content Presenter Customization https://blogs.oracle.com/ATEAM_WEBCENTER/resource/stefan.krantz/CPNLSCustomizations.zip WCP-LocalizationSupport.zip - WebCenter Content, Extension Component to enable localization creation of files with compliant auto naminghttps://blogs.oracle.com/ATEAM_WEBCENTER/resource/stefan.krantz/WCP-LocalizationSupport.zip NLSContentProfileRule.zip - WebCenter Content, Configuration Update Bundle to enable Global rule for new check in naming of data fileshttps://blogs.oracle.com/ATEAM_WEBCENTER/resource/stefan.krantz/NLSContentProfileRule.zip

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  • CodePlex Daily Summary for Tuesday, March 02, 2010

    CodePlex Daily Summary for Tuesday, March 02, 2010New ProjectsAcceptance Test Excel Addin: Acceptance Test Excel Addin is a tool to author, execute and analyze acceptance tests in Excel. The tester write tests using Given-When-Then (Gherk...Adrastus: Related to manage Issue/Item of any type. To be defined later TBDAn opportunity of upgrading Linux operating system: Want to add a new software in Linux operating system? Here is an opportunity. UFS (User Friendly Scheduler) has been designed to make the operating...AspNetPager: AspNetPager is a free custom paging control for ASP.NET web form application. It's one of the most popular ASP.NET third party controls used by chi...AzureRunMe: Run Java, Ruby, Python, [insert language of your choice] applications in Windows Azure. You provide a self contained ZIP file with a runme.bat f...DiffPlex - a .NET Diff Generator: DiffPlex is a combination of a .NET Diffing Library with both a Silverlight and HTML diff viewer.GPA WebClient: GPA project web client.Maintenance Service: A lot of projects need to have a windows service that execute different tasks. If am tired of creating the same service for all this project, so He...Marager Component Framework: Marager Component Framework (mcf)Pod Thrower: An application that gives a simple way to create podcast rss feeds from local computer folders.Rapidshare Episode Downloader: Rapidshare Episode Downloader is a software that enables you (yes, you!) to organize your many episodes of different TV shows in a nice list, prese...Resxus - Total .net string resource management tool: RESXUS is a resource file management tool which is being created under my job-experience of managing multilingual resx files. The first goal of th...SLFX: SLFXTheWhiteAmbit: Hybrid Scanline-Raytracing Engine. VisitorPattern based Scenegraph written in C++. DirectX9 or DirectX10 rendering is used for PrimaryRays and CUDA...TSqlMigrations: Yet another migrations platform right? This is purely sql based (tsql as it is only for Sql Server at this time). This tool is meant to help mana...WAFFLE: Windows Authentication Functional Framework (LE): WAFFLE - Windows Authentication Functional Framework (Light Edition) is a .NET library with a COM interface and a Java bridge that provides a worki...web lib api: This project aim, to pull together the major, web api/webservices for each relervant categorie.WSDLGenerator: A tool to generate a WSDL file from a c# dll which contains one more Microsoft WebServices. The project is build using VS2010RC and uses .net Fram...XNA Re-usable UI Components: The aim of this project is to create a re-usable set of UI game components helping reduce production time for your game. More information can be...YUI Compressor Custom Tool for Visual Studio: This EXTREMELY simple custom tool is used to automatically generate a *.min.css file from your existing code on save. It is merely a packaged versi...New ReleasesAcceptance Test Excel Addin: 1.0.0.0: How to Use Extract AcceptanceTestExcelAddIn-1.0.0.0.zip Run setup.exe Extract PasswordSample.zip Open Excel, your will see a new tab, "QA To...An opportunity of upgrading Linux operating system: UFS: The software provided by me is just a basic one that will run in the terminal through gcc compiler. The developers are therefore requested to make ...AspNetPager: Demo project: AspNetPager version 7.3.2 demo web site projectBusiness Framework: Formula Samples: A sample demonstrating textual language - Formula. It can be used is many business scenarios allowing end-user to configure or interact with the sy...Deblector: Deblector 1.1: This build fixes compatibility with .NET Reflector 6.Desktop Dimmer: March 2010: First release, March 2010EasyDump: EasyDump 1.0.1: Easy Dump 1.0.1 fix duplicate output when execute twiceExtensia: Extensia: Extensia is a very large list of extension methods and a few helper types. Many methods have practical utility (e.g. console parsing) whilst some ...Fluent Assertions: Fluent Assertions release 1.0: The first release of the Fluent Assertions. It contains assertions for the most common types and has several extension points.FolderSize: FolderSize.Win32.1.0.6.0: FolderSize.Win32.1.0.6.0 A simple utility intended to be used to scan harddrives for the folders that take most place and display this to the user...GamerShots.com Screenshot Capture: GamerShots.com Screenshot Capture: Windows Form application written in C# ASP.Net. Allows the user to capture a screen by pressing the "Print Scrn" key or by user input. Then uses ...Jet Login Tool (JetLoginTool): Stopped - 1.5.3713.17328: Fixed: Engine will now actually stop when the "Stop" button is hitJolt Environment - RuneScape Emulator: Jolt Environment 1.0.6000 GOLD: Features since 1.0.3200: - Account Creation via client - Character Saving/Loading (via MySQL serialization) - Ground Objects - Ground Items (with m...jQuery Library for SharePoint Web Services: SPServices 0.5.2: NOTE: While I work on new releases, I post alpha versions. Usually the alpha versions are here to address a particular need. I DO NOT recommend us...LINQ to XSD: 1.0.0: The LINQ to XSD technology provides .NET developers with support for typed XML programming. LINQ to XSD contributes to the LINQ project (.NET Langu...Maintenance Service: Alpha Release: Alpha Release of the SoftwareMDownloader: MDownloader-0.15.5.56206: Fixed many gathered bugs;MDownloader: MDownloader-0.15.6.56217: Fixed retrieving hotfile data using registered accounts.MRDS Services for HiTechnic: HiTechnic Controllers: The HiTechnic Controllers package contains services for MRDS that work with the LEGO NXT and TETRIX Servo and Motor Controllers. Initial ReleaseCo...Open NFe: DANFE 1.9.2: Correções do DANFE que serão incluídas na versão 1.9.2PROGRAMMABLE SOFTWARE DEVELOPMENT ENVIRONMENT: PROGRAMMABLE SOFTWARE DEVELOPMENT ENVIRONMENT-2.4: While testing a standard software parts kit library for strict portability, The following error condition occurred when using the Windows version ...Rapidshare Episode Downloader: RED 0.8: This is an almost fully working version of the software. What DOESN'T work: Showing the list of rapidshare search results (but query is being made...Reusable Library: V1.0.4: A collection of reusable abstractions for enterprise application developer.SharePoint LogViewer: SharePointLogViewer 1.5.1: Follwoing bugs are fixed Bookmarks deleted on refresh/reload Bookmarks not properly navigated on filtered list. Disabled toolbar buttons did n...SharePoint Taxonomy Extensions: SharePoint Taxonomy Extensions 1.1-1: - Some bugfixes - Possibility to switch between alphanummeric und manual sortingSilverSynth - Digital Audio Synthesis for Silverlight: SilverSynth 1.1: SilverSynth 1.1 is a zip file of the source code and includes an updated version of the demo application including presets.SQL Server Reporting Services MSBuild Tasks: Release 1.1.14669: New Features New Task added for Integrated and Native mode: DeleteReportUser Task ReportUserExists TaskTellago DevLabs: BizTalk Data Services v0.2: This release is the first version of the BizTalk Data Services API, a RESTful API for BizTalk Server based on the Open Data (OData) Protocol. The ...VCC: Latest build, v2.1.30301.0: Automatic drop of latest buildWAFFLE: Windows Authentication Functional Framework (LE): 1.2: Build 1.2.4217.0, initial open-source release. - Account lookup locally and in Active Directory. - Enumerating Active Directory domains. - Returns...Watermarker: 0.87: 01.03.2010: • FIXED: some stability fixes • ADDED: ability to choose any number of pictures and folder to save them after the operation completesWSDLGenerator: WSDLGenerator 0.0.0.1: Initial versionXNA Re-usable UI Components: Re-usable Game Components V1.0: First public release of the source codeYUI Compressor Custom Tool for Visual Studio: YUI Compressor Custom Tool with Installer v0.1a: Initial release with alpha installer - documentation to follow.Most Popular ProjectsMetaSharpRawrWBFS ManagerAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)Microsoft SQL Server Community & SamplesASP.NETImage Resizer Powertoy Clone for WindowsMost Active ProjectsRawrBlogEngine.NETMapWindow GISpatterns & practices – Enterprise LibraryjQuery Library for SharePoint Web ServicesSharpMap - Geospatial Application Framework for the CLRRapid Entity Framework (ORM). CTP 2DiffPlex - a .NET Diff GeneratorMDT Web FrontEndWPF Dialogs

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  • Connecting Linux to WatchGuard Firebox SSL (OpenVPN client)

    Recently, I got a new project assignment that requires to connect permanently to the customer's network through VPN. They are using a so-called SSL VPN. As I am using OpenVPN since more than 5 years within my company's network I was quite curious about their solution and how it would actually be different from OpenVPN. Well, short version: It is a disguised version of OpenVPN. Unfortunately, the company only offers a client for Windows and Mac OS which shouldn't bother any Linux user after all. OpenVPN is part of every recent distribution and can be activated in a couple of minutes - both client as well as server (if necessary). WatchGuard Firebox SSL - About dialog Borrowing some files from a Windows client installation Initially, I didn't know about the product, so therefore I went through the installation on Windows 8. No obstacles (and no restart despite installation of TAP device drivers!) here and the secured VPN channel was up and running in less than 2 minutes or so. Much appreciated from both parties - customer and me. Of course, this whole client package and my long year approved and stable installation ignited my interest to have a closer look at the WatchGuard client. Compared to the original OpenVPN client (okay, I have to admit this is years ago) this commercial product is smarter in terms of file locations during installation. You'll be able to access the configuration and key files below your roaming application data folder. To get there, simply enter '%AppData%\WatchGuard\Mobile VPN' in your Windows/File Explorer and confirm with Enter/Return. This will display the following files: Application folder below user profile with configuration and certificate files From there we are going to borrow four files, namely: ca.crt client.crt client.ovpn client.pem and transfer them to the Linux system. You might also be able to isolate those four files from a Mac OS client. Frankly, I'm just too lazy to run the WatchGuard client installation on a Mac mini only to find the folder location, and I'm going to describe why a little bit further down this article. I know that you can do that! Feedback in the comment section is appreciated. Configuration of OpenVPN (console) Depending on your distribution the following steps might be a little different but in general you should be able to get the important information from it. I'm going to describe the steps in Ubuntu 13.04 (Raring Ringtail). As usual, there are two possibilities to achieve your goal: console and UI. Let's what it is necessary to be done. First of all, you should ensure that you have OpenVPN installed on your system. Open your favourite terminal application and run the following statement: $ sudo apt-get install openvpn network-manager-openvpn network-manager-openvpn-gnome Just to be on the safe side. The four above mentioned files from your Windows machine could be copied anywhere but either you place them below your own user directory or you put them (as root) below the default directory: /etc/openvpn At this stage you would be able to do a test run already. Just in case, run the following command and check the output (it's the similar information you would get from the 'View Logs...' context menu entry in Windows: $ sudo openvpn --config client.ovpn Pay attention to the correct path to your configuration and certificate files. OpenVPN will ask you to enter your Auth Username and Auth Password in order to establish the VPN connection, same as the Windows client. Remote server and user authentication to establish the VPN Please complete the test run and see whether all went well. You can disconnect pressing Ctrl+C. Simplifying your life - authentication file In my case, I actually set up the OpenVPN client on my gateway/router. This establishes a VPN channel between my network and my client's network and allows me to switch machines easily without having the necessity to install the WatchGuard client on each and every machine. That's also very handy for my various virtualised Windows machines. Anyway, as the client configuration, key and certificate files are located on a headless system somewhere under the roof, it is mandatory to have an automatic connection to the remote site. For that you should first change the file extension '.ovpn' to '.conf' which is the default extension on Linux systems for OpenVPN, and then open the client configuration file in order to extend an existing line. $ sudo mv client.ovpn client.conf $ sudo nano client.conf You should have a similar content to this one here: dev tunclientproto tcp-clientca ca.crtcert client.crtkey client.pemtls-remote "/O=WatchGuard_Technologies/OU=Fireware/CN=Fireware_SSLVPN_Server"remote-cert-eku "TLS Web Server Authentication"remote 1.2.3.4 443persist-keypersist-tunverb 3mute 20keepalive 10 60cipher AES-256-CBCauth SHA1float 1reneg-sec 3660nobindmute-replay-warningsauth-user-pass auth.txt Note: I changed the IP address of the remote directive above (which should be obvious, right?). Anyway, the required change is marked in red and we have to create a new authentication file 'auth.txt'. You can give the directive 'auth-user-pass' any file name you'd like to. Due to my existing OpenVPN infrastructure my setup differs completely from the above written content but for sake of simplicity I just keep it 'as-is'. Okay, let's create this file 'auth.txt' $ sudo nano auth.txt and just put two lines of information in it - username on the first, and password on the second line, like so: myvpnusernameverysecretpassword Store the file, change permissions, and call openvpn with your configuration file again: $ sudo chmod 0600 auth.txt $ sudo openvpn --config client.conf This should now work without being prompted to enter username and password. In case that you placed your files below the system-wide location /etc/openvpn you can operate your VPNs also via service command like so: $ sudo service openvpn start client $ sudo service openvpn stop client Using Network Manager For newer Linux users or the ones with 'console-phobia' I'm going to describe now how to use Network Manager to setup the OpenVPN client. For this move your mouse to the systray area and click on Network Connections => VPN Connections => Configure VPNs... which opens your Network Connections dialog. Alternatively, use the HUD and enter 'Network Connections'. Network connections overview in Ubuntu Click on 'Add' button. On the next dialog select 'Import a saved VPN configuration...' from the dropdown list and click on 'Create...' Choose connection type to import VPN configuration Now you navigate to your folder where you put the client files from the Windows system and you open the 'client.ovpn' file. Next, on the tab 'VPN' proceed with the following steps (directives from the configuration file are referred): General Check the IP address of Gateway ('remote' - we used 1.2.3.4 in this setup) Authentication Change Type to 'Password with Certificates (TLS)' ('auth-pass-user') Enter User name to access your client keys (Auth Name: myvpnusername) Enter Password (Auth Password: verysecretpassword) and choose your password handling Browse for your User Certificate ('cert' - should be pre-selected with client.crt) Browse for your CA Certificate ('ca' - should be filled as ca.crt) Specify your Private Key ('key' - here: client.pem) Then click on the 'Advanced...' button and check the following values: Use custom gateway port: 443 (second value of 'remote' directive) Check the selected value of Cipher ('cipher') Check HMAC Authentication ('auth') Enter the Subject Match: /O=WatchGuard_Technologies/OU=Fireware/CN=Fireware_SSLVPN_Server ('tls-remote') Finally, you have to confirm and close all dialogs. You should be able to establish your OpenVPN-WatchGuard connection via Network Manager. For that, click on the 'VPN Connections => client' entry on your Network Manager in the systray. It is advised that you keep an eye on the syslog to see whether there are any problematic issues that would require some additional attention. Advanced topic: routing As stated above, I'm running the 'WatchGuard client for Linux' on my head-less server, and since then I'm actually establishing a secure communication channel between two networks. In order to enable your network clients to get access to machines on the remote side there are two possibilities to enable that: Proper routing on both sides of the connection which enables both-direction access, or Network masquerading on the 'client side' of the connection Following, I'm going to describe the second option a little bit more in detail. The Linux system that I'm using is already configured as a gateway to the internet. I won't explain the necessary steps to do that, and will only focus on the additional tweaks I had to do. You can find tons of very good instructions and tutorials on 'How to setup a Linux gateway/router' - just use Google. OK, back to the actual modifications. First, we need to have some information about the network topology and IP address range used on the 'other' side. We can get this very easily from /var/log/syslog after we established the OpenVPN channel, like so: $ sudo tail -n20 /var/log/syslog Or if your system is quite busy with logging, like so: $ sudo less /var/log/syslog | grep ovpn The output should contain PUSH received message similar to the following one: Jul 23 23:13:28 ios1 ovpn-client[789]: PUSH: Received control message: 'PUSH_REPLY,topology subnet,route 192.168.1.0 255.255.255.0,dhcp-option DOMAIN ,route-gateway 192.168.6.1,topology subnet,ping 10,ping-restart 60,ifconfig 192.168.6.2 255.255.255.0' The interesting part for us is the route command which I highlighted already in the sample PUSH_REPLY. Depending on your remote server there might be multiple networks defined (172.16.x.x and/or 10.x.x.x). Important: The IP address range on both sides of the connection has to be different, otherwise you will have to shuffle IPs or increase your the netmask. {loadposition content_adsense} After the VPN connection is established, we have to extend the rules for iptables in order to route and masquerade IP packets properly. I created a shell script to take care of those steps: #!/bin/sh -eIPTABLES=/sbin/iptablesDEV_LAN=eth0DEV_VPNS=tun+VPN=192.168.1.0/24 $IPTABLES -A FORWARD -i $DEV_LAN -o $DEV_VPNS -d $VPN -j ACCEPT$IPTABLES -A FORWARD -i $DEV_VPNS -o $DEV_LAN -s $VPN -j ACCEPT$IPTABLES -t nat -A POSTROUTING -o $DEV_VPNS -d $VPN -j MASQUERADE I'm using the wildcard interface 'tun+' because I have multiple client configurations for OpenVPN on my server. In your case, it might be sufficient to specify device 'tun0' only. Simplifying your life - automatic connect on boot Now, that the client connection works flawless, configuration of routing and iptables is okay, we might consider to add another 'laziness' factor into our setup. Due to kernel updates or other circumstances it might be necessary to reboot your system. Wouldn't it be nice that the VPN connections are established during the boot procedure? Yes, of course it would be. To achieve this, we have to configure OpenVPN to automatically start our VPNs via init script. Let's have a look at the responsible 'default' file and adjust the settings accordingly. $ sudo nano /etc/default/openvpn Which should have a similar content to this: # This is the configuration file for /etc/init.d/openvpn## Start only these VPNs automatically via init script.# Allowed values are "all", "none" or space separated list of# names of the VPNs. If empty, "all" is assumed.# The VPN name refers to the VPN configutation file name.# i.e. "home" would be /etc/openvpn/home.conf#AUTOSTART="all"#AUTOSTART="none"#AUTOSTART="home office"## ... more information which remains unmodified ... With the OpenVPN client configuration as described above you would either set AUTOSTART to "all" or to "client" to enable automatic start of your VPN(s) during boot. You should also take care that your iptables commands are executed after the link has been established, too. You can easily test this configuration without reboot, like so: $ sudo service openvpn restart Enjoy stable VPN connections between your Linux system(s) and a WatchGuard Firebox SSL remote server. Cheers, JoKi

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  • ASP.NET Web Forms Extensibility: Providers

    - by Ricardo Peres
    Introduction This will be the first of a number of posts on ASP.NET extensibility. At this moment I don’t know exactly how many will be and I only know a couple of subjects that I want to talk about, so more will come in the next days. I have the sensation that the providers offered by ASP.NET are not widely know, although everyone uses, for example, sessions, they may not be aware of the extensibility points that Microsoft included. This post won’t go into details of how to configure and extend each of the providers, but will hopefully give some pointers on that direction. Canonical These are the most widely known and used providers, coming from ASP.NET 1, chances are, you have used them already. Good support for invoking client side, either from a .NET application or from JavaScript. Lots of server-side controls use them, such as the Login control for example. Membership The Membership provider is responsible for managing registered users, including creating new ones, authenticating them, changing passwords, etc. ASP.NET comes with two implementations, one that uses a SQL Server database and another that uses the Active Directory. The base class is Membership and new providers are registered on the membership section on the Web.config file, as well as parameters for specifying minimum password lengths, complexities, maximum age, etc. One reason for creating a custom provider would be, for example, storing membership information in a different database engine. 1: <membership defaultProvider="MyProvider"> 2: <providers> 3: <add name="MyProvider" type="MyClass, MyAssembly"/> 4: </providers> 5: </membership> Role The Role provider assigns roles to authenticated users. The base class is Role and there are three out of the box implementations: XML-based, SQL Server and Windows-based. Also registered on Web.config through the roleManager section, where you can also say if your roles should be cached on a cookie. If you want your roles to come from a different place, implement a custom provider. 1: <roleManager defaultProvider="MyProvider"> 2: <providers> 3: <add name="MyProvider" type="MyClass, MyAssembly" /> 4: </providers> 5: </roleManager> Profile The Profile provider allows defining a set of properties that will be tied and made available to authenticated or even anonymous ones, which must be tracked by using anonymous authentication. The base class is Profile and the only included implementation stores these settings in a SQL Server database. Configured through profile section, where you also specify the properties to make available, a custom provider would allow storing these properties in different locations. 1: <profile defaultProvider="MyProvider"> 2: <providers> 3: <add name="MyProvider" type="MyClass, MyAssembly"/> 4: </providers> 5: </profile> Basic OK, I didn’t know what to call these, so Basic is probably as good as a name as anything else. Not supported client-side (doesn’t even make sense). Session The Session provider allows storing data tied to the current “session”, which is normally created when a user first accesses the site, even when it is not yet authenticated, and remains all the way. The base class and only included implementation is SessionStateStoreProviderBase and it is capable of storing data in one of three locations: In the process memory (default, not suitable for web farms or increased reliability); A SQL Server database (best for reliability and clustering); The ASP.NET State Service, which is a Windows Service that is installed with the .NET Framework (ok for clustering). The configuration is made through the sessionState section. By adding a custom Session provider, you can store the data in different locations – think for example of a distributed cache. 1: <sessionState customProvider=”MyProvider”> 2: <providers> 3: <add name=”MyProvider” type=”MyClass, MyAssembly” /> 4: </providers> 5: </sessionState> Resource A not so known provider, allows you to change the origin of localized resource elements. By default, these come from RESX files and are used whenever you use the Resources expression builder or the GetGlobalResourceObject and GetLocalResourceObject methods, but if you implement a custom provider, you can have these elements come from some place else, such as a database. The base class is ResourceProviderFactory and there’s only one internal implementation which uses these RESX files. Configuration is through the globalization section. 1: <globalization resourceProviderFactoryType="MyClass, MyAssembly" /> Health Monitoring Health Monitoring is also probably not so well known, and actually not a good name for it. First, in order to understand what it does, you have to know that ASP.NET fires “events” at specific times and when specific things happen, such as when logging in, an exception is raised. These are not user interface events and you can create your own and fire them, nothing will happen, but the Health Monitoring provider will detect it. You can configure it to do things when certain conditions are met, such as a number of events being fired in a certain amount of time. You define these rules and route them to a specific provider, which must inherit from WebEventProvider. Out of the box implementations include sending mails, logging to a SQL Server database, writing to the Windows Event Log, Windows Management Instrumentation, the IIS 7 Trace infrastructure or the debugger Trace. Its configuration is achieved by the healthMonitoring section and a reason for implementing a custom provider would be, for example, locking down a web application in the event of a significant number of failed login attempts occurring in a small period of time. 1: <healthMonitoring> 2: <providers> 3: <add name="MyProvider" type="MyClass, MyAssembly"/> 4: </providers> 5: </healthMonitoring> Sitemap The Sitemap provider allows defining the site’s navigation structure and associated required permissions for each node, in a tree-like fashion. Usually this is statically defined, and the included provider allows it, by supplying this structure in a Web.sitemap XML file. The base class is SiteMapProvider and you can extend it in order to supply you own source for the site’s structure, which may even be dynamic. Its configuration must be done through the siteMap section. 1: <siteMap defaultProvider="MyProvider"> 2: <providers><add name="MyProvider" type="MyClass, MyAssembly" /> 3: </providers> 4: </siteMap> Web Part Personalization Web Parts are better known by SharePoint users, but since ASP.NET 2.0 they are included in the core Framework. Web Parts are server-side controls that offer certain possibilities of configuration by clients visiting the page where they are located. The infrastructure handles this configuration per user or globally for all users and this provider is responsible for just that. The base class is PersonalizationProvider and the only included implementation stores settings on SQL Server. Add new providers through the personalization section. 1: <webParts> 2: <personalization defaultProvider="MyProvider"> 3: <providers> 4: <add name="MyProvider" type="MyClass, MyAssembly"/> 5: </providers> 6: </personalization> 7: </webParts> Build The Build provider is responsible for compiling whatever files are present on your web folder. There’s a base class, BuildProvider, and, as can be expected, internal implementations for building pages (ASPX), master pages (Master), user web controls (ASCX), handlers (ASHX), themes (Skin), XML Schemas (XSD), web services (ASMX, SVC), resources (RESX), browser capabilities files (Browser) and so on. You would write a build provider if you wanted to generate code from any kind of non-code file so that you have strong typing at development time. Configuration goes on the buildProviders section and it is per extension. 1: <buildProviders> 2: <add extension=".ext" type="MyClass, MyAssembly” /> 3: </buildProviders> New in ASP.NET 4 Not exactly new since they exist since 2010, but in ASP.NET terms, still new. Output Cache The Output Cache for ASPX pages and ASCX user controls is now extensible, through the Output Cache provider, which means you can implement a custom mechanism for storing and retrieving cached data, for example, in a distributed fashion. The base class is OutputCacheProvider and the only implementation is private. Configuration goes on the outputCache section and on each page and web user control you can choose the provider you want to use. 1: <caching> 2: <outputCache defaultProvider="MyProvider"> 3: <providers> 4: <add name="MyProvider" type="MyClass, MyAssembly"/> 5: </providers> 6: </outputCache> 7: </caching> Request Validation A big change introduced in ASP.NET 4 (and refined in 4.5, by the way) is the introduction of extensible request validation, by means of a Request Validation provider. This means we are not limited to either enabling or disabling event validation for all pages or for a specific page, but we now have fine control over each of the elements of the request, including cookies, headers, query string and form values. The base provider class is RequestValidator and the configuration goes on the httpRuntime section. 1: <httpRuntime requestValidationType="MyClass, MyAssembly" /> Browser Capabilities The Browser Capabilities provider is new in ASP.NET 4, although the concept exists from ASP.NET 2. The idea is to map a browser brand and version to its supported capabilities, such as JavaScript version, Flash support, ActiveX support, and so on. Previously, this was all hardcoded in .Browser files located in %WINDIR%\Microsoft.NET\Framework(64)\vXXXXX\Config\Browsers, but now you can have a class inherit from HttpCapabilitiesProvider and implement your own mechanism. Register in on the browserCaps section. 1: <browserCaps provider="MyClass, MyAssembly" /> Encoder The Encoder provider is responsible for encoding every string that is sent to the browser on a page or header. This includes for example converting special characters for their standard codes and is implemented by the base class HttpEncoder. Another implementation takes care of Anti Cross Site Scripting (XSS) attacks. Build your own by inheriting from one of these classes if you want to add some additional processing to these strings. The configuration will go on the httpRuntime section. 1: <httpRuntime encoderType="MyClass, MyAssembly" /> Conclusion That’s about it for ASP.NET providers. It was by no means a thorough description, but I hope I managed to raise your interest on this subject. There are lots of pointers on the Internet, so I only included direct references to the Framework classes and configuration sections. Stay tuned for more extensibility!

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  • An Xml Serializable PropertyBag Dictionary Class for .NET

    - by Rick Strahl
    I don't know about you but I frequently need property bags in my applications to store and possibly cache arbitrary data. Dictionary<T,V> works well for this although I always seem to be hunting for a more specific generic type that provides a string key based dictionary. There's string dictionary, but it only works with strings. There's Hashset<T> but it uses the actual values as keys. In most key value pair situations for me string is key value to work off. Dictionary<T,V> works well enough, but there are some issues with serialization of dictionaries in .NET. The .NET framework doesn't do well serializing IDictionary objects out of the box. The XmlSerializer doesn't support serialization of IDictionary via it's default serialization, and while the DataContractSerializer does support IDictionary serialization it produces some pretty atrocious XML. What doesn't work? First off Dictionary serialization with the Xml Serializer doesn't work so the following fails: [TestMethod] public void DictionaryXmlSerializerTest() { var bag = new Dictionary<string, object>(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42, 45, 66 }); TestContext.WriteLine(this.ToXml(bag)); } public string ToXml(object obj) { if (obj == null) return null; StringWriter sw = new StringWriter(); XmlSerializer ser = new XmlSerializer(obj.GetType()); ser.Serialize(sw, obj); return sw.ToString(); } The error you get with this is: System.NotSupportedException: The type System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] is not supported because it implements IDictionary. Got it! BTW, the same is true with binary serialization. Running the same code above against the DataContractSerializer does work: [TestMethod] public void DictionaryDataContextSerializerTest() { var bag = new Dictionary<string, object>(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42, 45, 66 }); TestContext.WriteLine(this.ToXmlDcs(bag)); } public string ToXmlDcs(object value, bool throwExceptions = false) { var ser = new DataContractSerializer(value.GetType(), null, int.MaxValue, true, false, null); MemoryStream ms = new MemoryStream(); ser.WriteObject(ms, value); return Encoding.UTF8.GetString(ms.ToArray(), 0, (int)ms.Length); } This DOES work but produces some pretty heinous XML (formatted with line breaks and indentation here): <ArrayOfKeyValueOfstringanyType xmlns="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <KeyValueOfstringanyType> <Key>key</Key> <Value i:type="a:string" xmlns:a="http://www.w3.org/2001/XMLSchema">Value</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key2</Key> <Value i:type="a:decimal" xmlns:a="http://www.w3.org/2001/XMLSchema">100.10</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key3</Key> <Value i:type="a:guid" xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/">2cd46d2a-a636-4af4-979b-e834d39b6d37</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key4</Key> <Value i:type="a:dateTime" xmlns:a="http://www.w3.org/2001/XMLSchema">2011-09-19T17:17:05.4406999-07:00</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key5</Key> <Value i:type="a:boolean" xmlns:a="http://www.w3.org/2001/XMLSchema">true</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key7</Key> <Value i:type="a:base64Binary" xmlns:a="http://www.w3.org/2001/XMLSchema">Ki1C</Value> </KeyValueOfstringanyType> </ArrayOfKeyValueOfstringanyType> Ouch! That seriously hurts the eye! :-) Worse though it's extremely verbose with all those repetitive namespace declarations. It's good to know that it works in a pinch, but for a human readable/editable solution or something lightweight to store in a database it's not quite ideal. Why should I care? As a little background, in one of my applications I have a need for a flexible property bag that is used on a free form database field on an otherwise static entity. Basically what I have is a standard database record to which arbitrary properties can be added in an XML based string field. I intend to expose those arbitrary properties as a collection from field data stored in XML. The concept is pretty simple: When loading write the data to the collection, when the data is saved serialize the data into an XML string and store it into the database. When reading the data pick up the XML and if the collection on the entity is accessed automatically deserialize the XML into the Dictionary. (I'll talk more about this in another post). While the DataContext Serializer would work, it's verbosity is problematic both for size of the generated XML strings and the fact that users can manually edit this XML based property data in an advanced mode. A clean(er) layout certainly would be preferable and more user friendly. Custom XMLSerialization with a PropertyBag Class So… after a bunch of experimentation with different serialization formats I decided to create a custom PropertyBag class that provides for a serializable Dictionary. It's basically a custom Dictionary<TType,TValue> implementation with the keys always set as string keys. The result are PropertyBag<TValue> and PropertyBag (which defaults to the object type for values). The PropertyBag<TType> and PropertyBag classes provide these features: Subclassed from Dictionary<T,V> Implements IXmlSerializable with a cleanish XML format ToXml() and FromXml() methods to export and import to and from XML strings Static CreateFromXml() method to create an instance It's simple enough as it's merely a Dictionary<string,object> subclass but that supports serialization to a - what I think at least - cleaner XML format. The class is super simple to use: [TestMethod] public void PropertyBagTwoWayObjectSerializationTest() { var bag = new PropertyBag(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42,45,66 } ); bag.Add("Key8", null); bag.Add("Key9", new ComplexObject() { Name = "Rick", Entered = DateTime.Now, Count = 10 }); string xml = bag.ToXml(); TestContext.WriteLine(bag.ToXml()); bag.Clear(); bag.FromXml(xml); Assert.IsTrue(bag["key"] as string == "Value"); Assert.IsInstanceOfType( bag["Key3"], typeof(Guid)); Assert.IsNull(bag["Key8"]); //Assert.IsNull(bag["Key10"]); Assert.IsInstanceOfType(bag["Key9"], typeof(ComplexObject)); } This uses the PropertyBag class which uses a PropertyBag<string,object> - which means it returns untyped values of type object. I suspect for me this will be the most common scenario as I'd want to store arbitrary values in the PropertyBag rather than one specific type. The same code with a strongly typed PropertyBag<decimal> looks like this: [TestMethod] public void PropertyBagTwoWayValueTypeSerializationTest() { var bag = new PropertyBag<decimal>(); bag.Add("key", 10M); bag.Add("Key1", 100.10M); bag.Add("Key2", 200.10M); bag.Add("Key3", 300.10M); string xml = bag.ToXml(); TestContext.WriteLine(bag.ToXml()); bag.Clear(); bag.FromXml(xml); Assert.IsTrue(bag.Get("Key1") == 100.10M); Assert.IsTrue(bag.Get("Key3") == 300.10M); } and produces typed results of type decimal. The types can be either value or reference types the combination of which actually proved to be a little more tricky than anticipated due to null and specific string value checks required - getting the generic typing right required use of default(T) and Convert.ChangeType() to trick the compiler into playing nice. Of course the whole raison d'etre for this class is the XML serialization. You can see in the code above that we're doing a .ToXml() and .FromXml() to serialize to and from string. The XML produced for the first example looks like this: <?xml version="1.0" encoding="utf-8"?> <properties> <item> <key>key</key> <value>Value</value> </item> <item> <key>Key2</key> <value type="decimal">100.10</value> </item> <item> <key>Key3</key> <value type="___System.Guid"> <guid>f7a92032-0c6d-4e9d-9950-b15ff7cd207d</guid> </value> </item> <item> <key>Key4</key> <value type="datetime">2011-09-26T17:45:58.5789578-10:00</value> </item> <item> <key>Key5</key> <value type="boolean">true</value> </item> <item> <key>Key7</key> <value type="base64Binary">Ki1C</value> </item> <item> <key>Key8</key> <value type="nil" /> </item> <item> <key>Key9</key> <value type="___Westwind.Tools.Tests.PropertyBagTest+ComplexObject"> <ComplexObject> <Name>Rick</Name> <Entered>2011-09-26T17:45:58.5789578-10:00</Entered> <Count>10</Count> </ComplexObject> </value> </item> </properties>   The format is a bit cleaner than the DataContractSerializer. Each item is serialized into <key> <value> pairs. If the value is a string no type information is written. Since string tends to be the most common type this saves space and serialization processing. All other types are attributed. Simple types are mapped to XML types so things like decimal, datetime, boolean and base64Binary are encoded using their Xml type values. All other types are embedded with a hokey format that describes the .NET type preceded by a three underscores and then are encoded using the XmlSerializer. You can see this best above in the ComplexObject encoding. For custom types this isn't pretty either, but it's more concise than the DCS and it works as long as you're serializing back and forth between .NET clients at least. The XML generated from the second example that uses PropertyBag<decimal> looks like this: <?xml version="1.0" encoding="utf-8"?> <properties> <item> <key>key</key> <value type="decimal">10</value> </item> <item> <key>Key1</key> <value type="decimal">100.10</value> </item> <item> <key>Key2</key> <value type="decimal">200.10</value> </item> <item> <key>Key3</key> <value type="decimal">300.10</value> </item> </properties>   How does it work As I mentioned there's nothing fancy about this solution - it's little more than a subclass of Dictionary<T,V> that implements custom Xml Serialization and a couple of helper methods that facilitate getting the XML in and out of the class more easily. But it's proven very handy for a number of projects for me where dynamic data storage is required. Here's the code: /// <summary> /// Creates a serializable string/object dictionary that is XML serializable /// Encodes keys as element names and values as simple values with a type /// attribute that contains an XML type name. Complex names encode the type /// name with type='___namespace.classname' format followed by a standard xml /// serialized format. The latter serialization can be slow so it's not recommended /// to pass complex types if performance is critical. /// </summary> [XmlRoot("properties")] public class PropertyBag : PropertyBag<object> { /// <summary> /// Creates an instance of a propertybag from an Xml string /// </summary> /// <param name="xml">Serialize</param> /// <returns></returns> public static PropertyBag CreateFromXml(string xml) { var bag = new PropertyBag(); bag.FromXml(xml); return bag; } } /// <summary> /// Creates a serializable string for generic types that is XML serializable. /// /// Encodes keys as element names and values as simple values with a type /// attribute that contains an XML type name. Complex names encode the type /// name with type='___namespace.classname' format followed by a standard xml /// serialized format. The latter serialization can be slow so it's not recommended /// to pass complex types if performance is critical. /// </summary> /// <typeparam name="TValue">Must be a reference type. For value types use type object</typeparam> [XmlRoot("properties")] public class PropertyBag<TValue> : Dictionary<string, TValue>, IXmlSerializable { /// <summary> /// Not implemented - this means no schema information is passed /// so this won't work with ASMX/WCF services. /// </summary> /// <returns></returns> public System.Xml.Schema.XmlSchema GetSchema() { return null; } /// <summary> /// Serializes the dictionary to XML. Keys are /// serialized to element names and values as /// element values. An xml type attribute is embedded /// for each serialized element - a .NET type /// element is embedded for each complex type and /// prefixed with three underscores. /// </summary> /// <param name="writer"></param> public void WriteXml(System.Xml.XmlWriter writer) { foreach (string key in this.Keys) { TValue value = this[key]; Type type = null; if (value != null) type = value.GetType(); writer.WriteStartElement("item"); writer.WriteStartElement("key"); writer.WriteString(key as string); writer.WriteEndElement(); writer.WriteStartElement("value"); string xmlType = XmlUtils.MapTypeToXmlType(type); bool isCustom = false; // Type information attribute if not string if (value == null) { writer.WriteAttributeString("type", "nil"); } else if (!string.IsNullOrEmpty(xmlType)) { if (xmlType != "string") { writer.WriteStartAttribute("type"); writer.WriteString(xmlType); writer.WriteEndAttribute(); } } else { isCustom = true; xmlType = "___" + value.GetType().FullName; writer.WriteStartAttribute("type"); writer.WriteString(xmlType); writer.WriteEndAttribute(); } // Actual deserialization if (!isCustom) { if (value != null) writer.WriteValue(value); } else { XmlSerializer ser = new XmlSerializer(value.GetType()); ser.Serialize(writer, value); } writer.WriteEndElement(); // value writer.WriteEndElement(); // item } } /// <summary> /// Reads the custom serialized format /// </summary> /// <param name="reader"></param> public void ReadXml(System.Xml.XmlReader reader) { this.Clear(); while (reader.Read()) { if (reader.NodeType == XmlNodeType.Element && reader.Name == "key") { string xmlType = null; string name = reader.ReadElementContentAsString(); // item element reader.ReadToNextSibling("value"); if (reader.MoveToNextAttribute()) xmlType = reader.Value; reader.MoveToContent(); TValue value; if (xmlType == "nil") value = default(TValue); // null else if (string.IsNullOrEmpty(xmlType)) { // value is a string or object and we can assign TValue to value string strval = reader.ReadElementContentAsString(); value = (TValue) Convert.ChangeType(strval, typeof(TValue)); } else if (xmlType.StartsWith("___")) { while (reader.Read() && reader.NodeType != XmlNodeType.Element) { } Type type = ReflectionUtils.GetTypeFromName(xmlType.Substring(3)); //value = reader.ReadElementContentAs(type,null); XmlSerializer ser = new XmlSerializer(type); value = (TValue)ser.Deserialize(reader); } else value = (TValue)reader.ReadElementContentAs(XmlUtils.MapXmlTypeToType(xmlType), null); this.Add(name, value); } } } /// <summary> /// Serializes this dictionary to an XML string /// </summary> /// <returns>XML String or Null if it fails</returns> public string ToXml() { string xml = null; SerializationUtils.SerializeObject(this, out xml); return xml; } /// <summary> /// Deserializes from an XML string /// </summary> /// <param name="xml"></param> /// <returns>true or false</returns> public bool FromXml(string xml) { this.Clear(); // if xml string is empty we return an empty dictionary if (string.IsNullOrEmpty(xml)) return true; var result = SerializationUtils.DeSerializeObject(xml, this.GetType()) as PropertyBag<TValue>; if (result != null) { foreach (var item in result) { this.Add(item.Key, item.Value); } } else // null is a failure return false; return true; } /// <summary> /// Creates an instance of a propertybag from an Xml string /// </summary> /// <param name="xml"></param> /// <returns></returns> public static PropertyBag<TValue> CreateFromXml(string xml) { var bag = new PropertyBag<TValue>(); bag.FromXml(xml); return bag; } } } The code uses a couple of small helper classes SerializationUtils and XmlUtils for mapping Xml types to and from .NET, both of which are from the WestWind,Utilities project (which is the same project where PropertyBag lives) from the West Wind Web Toolkit. The code implements ReadXml and WriteXml for the IXmlSerializable implementation using old school XmlReaders and XmlWriters (because it's pretty simple stuff - no need for XLinq here). Then there are two helper methods .ToXml() and .FromXml() that basically allow your code to easily convert between XML and a PropertyBag object. In my code that's what I use to actually to persist to and from the entity XML property during .Load() and .Save() operations. It's sweet to be able to have a string key dictionary and then be able to turn around with 1 line of code to persist the whole thing to XML and back. Hopefully some of you will find this class as useful as I've found it. It's a simple solution to a common requirement in my applications and I've used the hell out of it in the  short time since I created it. Resources You can find the complete code for the two classes plus the helpers in the Subversion repository for Westwind.Utilities. You can grab the source files from there or download the whole project. You can also grab the full Westwind.Utilities assembly from NuGet and add it to your project if that's easier for you. PropertyBag Source Code SerializationUtils and XmlUtils Westwind.Utilities Assembly on NuGet (add from Visual Studio) © Rick Strahl, West Wind Technologies, 2005-2011Posted in .NET  CSharp   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Using HTML 5 SessionState to save rendered Page Content

    - by Rick Strahl
    HTML 5 SessionState and LocalStorage are very useful and super easy to use to manage client side state. For building rich client side or SPA style applications it's a vital feature to be able to cache user data as well as HTML content in order to swap pages in and out of the browser's DOM. What might not be so obvious is that you can also use the sessionState and localStorage objects even in classic server rendered HTML applications to provide caching features between pages. These APIs have been around for a long time and are supported by most relatively modern browsers and even all the way back to IE8, so you can use them safely in your Web applications. SessionState and LocalStorage are easy The APIs that make up sessionState and localStorage are very simple. Both object feature the same API interface which  is a simple, string based key value store that has getItem, setItem, removeitem, clear and  key methods. The objects are also pseudo array objects and so can be iterated like an array with  a length property and you have array indexers to set and get values with. Basic usage  for storing and retrieval looks like this (using sessionStorage, but the syntax is the same for localStorage - just switch the objects):// set var lastAccess = new Date().getTime(); if (sessionStorage) sessionStorage.setItem("myapp_time", lastAccess.toString()); // retrieve in another page or on a refresh var time = null; if (sessionStorage) time = sessionStorage.getItem("myapp_time"); if (time) time = new Date(time * 1); else time = new Date(); sessionState stores data that is browser session specific and that has a liftetime of the active browser session or window. Shut down the browser or tab and the storage goes away. localStorage uses the same API interface, but the lifetime of the data is permanently stored in the browsers storage area until deleted via code or by clearing out browser cookies (not the cache). Both sessionStorage and localStorage space is limited. The spec is ambiguous about this - supposedly sessionStorage should allow for unlimited size, but it appears that most WebKit browsers support only 2.5mb for either object. This means you have to be careful what you store especially since other applications might be running on the same domain and also use the storage mechanisms. That said 2.5mb worth of character data is quite a bit and would go a long way. The easiest way to get a feel for how sessionState and localStorage work is to look at a simple example. You can go check out the following example online in Plunker: http://plnkr.co/edit/0ICotzkoPjHaWa70GlRZ?p=preview which looks like this: Plunker is an online HTML/JavaScript editor that lets you write and run Javascript code and similar to JsFiddle, but a bit cleaner to work in IMHO (thanks to John Papa for turning me on to it). The sample has two text boxes with counts that update session/local storage every time you click the related button. The counts are 'cached' in Session and Local storage. The point of these examples is that both counters survive full page reloads, and the LocalStorage counter survives a complete browser shutdown and restart. Go ahead and try it out by clicking the Reload button after updating both counters and then shutting down the browser completely and going back to the same URL (with the same browser). What you should see is that reloads leave both counters intact at the counted values, while a browser restart will leave only the local storage counter intact. The code to deal with the SessionStorage (and LocalStorage not shown here) in the example is isolated into a couple of wrapper methods to simplify the code: function getSessionCount() { var count = 0; if (sessionStorage) { var count = sessionStorage.getItem("ss_count"); count = !count ? 0 : count * 1; } $("#txtSession").val(count); return count; } function setSessionCount(count) { if (sessionStorage) sessionStorage.setItem("ss_count", count.toString()); } These two functions essentially load and store a session counter value. The two key methods used here are: sessionStorage.getItem(key); sessionStorage.setItem(key,stringVal); Note that the value given to setItem and return by getItem has to be a string. If you pass another type you get an error. Don't let that limit you though - you can easily enough store JSON data in a variable so it's quite possible to pass complex objects and store them into a single sessionStorage value:var user = { name: "Rick", id="ricks", level=8 } sessionStorage.setItem("app_user",JSON.stringify(user)); to retrieve it:var user = sessionStorage.getItem("app_user"); if (user) user = JSON.parse(user); Simple! If you're using the Chrome Developer Tools (F12) you can also check out the session and local storage state on the Resource tab:   You can also use this tool to refresh or remove entries from storage. What we just looked at is a purely client side implementation where a couple of counters are stored. For rich client centric AJAX applications sessionStorage and localStorage provide a very nice and simple API to store application state while the application is running. But you can also use these storage mechanisms to manage server centric HTML applications when you combine server rendering with some JavaScript to perform client side data caching. You can both store some state information and data on the client (ie. store a JSON object and carry it forth between server rendered HTML requests) or you can use it for good old HTTP based caching where some rendered HTML is saved and then restored later. Let's look at the latter with a real life example. Why do I need Client-side Page Caching for Server Rendered HTML? I don't know about you, but in a lot of my existing server driven applications I have lists that display a fair amount of data. Typically these lists contain links to then drill down into more specific data either for viewing or editing. You can then click on a link and go off to a detail page that provides more concise content. So far so good. But now you're done with the detail page and need to get back to the list, so you click on a 'bread crumbs trail' or an application level 'back to list' button and… …you end up back at the top of the list - the scroll position, the current selection in some cases even filters conditions - all gone with the wind. You've left behind the state of the list and are starting from scratch in your browsing of the list from the top. Not cool! Sound familiar? This a pretty common scenario with server rendered HTML content where it's so common to display lists to drill into, only to lose state in the process of returning back to the original list. Look at just about any traditional forums application, or even StackOverFlow to see what I mean here. Scroll down a bit to look at a post or entry, drill in then use the bread crumbs or tab to go back… In some cases returning to the top of a list is not a big deal. On StackOverFlow that sort of works because content is turning around so quickly you probably want to actually look at the top posts. Not always though - if you're browsing through a list of search topics you're interested in and drill in there's no way back to that position. Essentially anytime you're actively browsing the items in the list, that's when state becomes important and if it's not handled the user experience can be really disrupting. Content Caching If you're building client centric SPA style applications this is a fairly easy to solve problem - you tend to render the list once and then update the page content to overlay the detail content, only hiding the list temporarily until it's used again later. It's relatively easy to accomplish this simply by hiding content on the page and later making it visible again. But if you use server rendered content, hanging on to all the detail like filters, selections and scroll position is not quite as easy. Or is it??? This is where sessionStorage comes in handy. What if we just save the rendered content of a previous page, and then restore it when we return to this page based on a special flag that tells us to use the cached version? Let's see how we can do this. A real World Use Case Recently my local ISP asked me to help out with updating an ancient classifieds application. They had a very busy, local classifieds app that was originally an ASP classic application. The old app was - wait for it: frames based - and even though I lobbied against it, the decision was made to keep the frames based layout to allow rapid browsing of the hundreds of posts that are made on a daily basis. The primary reason they wanted this was precisely for the ability to quickly browse content item by item. While I personally hate working with Frames, I have to admit that the UI actually works well with the frames layout as long as you're running on a large desktop screen. You can check out the frames based desktop site here: http://classifieds.gorge.net/ However when I rebuilt the app I also added a secondary view that doesn't use frames. The main reason for this of course was for mobile displays which work horribly with frames. So there's a somewhat mobile friendly interface to the interface, which ditches the frames and uses some responsive design tweaking for mobile capable operation: http://classifeds.gorge.net/mobile  (or browse the base url with your browser width under 800px)   Here's what the mobile, non-frames view looks like:   As you can see this means that the list of classifieds posts now is a list and there's a separate page for drilling down into the item. And of course… originally we ran into that usability issue I mentioned earlier where the browse, view detail, go back to the list cycle resulted in lost list state. Originally in mobile mode you scrolled through the list, found an item to look at and drilled in to display the item detail. Then you clicked back to the list and BAM - you've lost your place. Because there are so many items added on a daily basis the full list is never fully loaded, but rather there's a "Load Additional Listings"  entry at the button. Not only did we originally lose our place when coming back to the list, but any 'additionally loaded' items are no longer there because the list was now rendering  as if it was the first page hit. The additional listings, and any filters, the selection of an item all were lost. Major Suckage! Using Client SessionStorage to cache Server Rendered Content To work around this problem I decided to cache the rendered page content from the list in SessionStorage. Anytime the list renders or is updated with Load Additional Listings, the page HTML is cached and stored in Session Storage. Any back links from the detail page or the login or write entry forms then point back to the list page with a back=true query string parameter. If the server side sees this parameter it doesn't render the part of the page that is cached. Instead the client side code retrieves the data from the sessionState cache and simply inserts it into the page. It sounds pretty simple, and the overall the process is really easy, but there are a few gotchas that I'll discuss in a minute. But first let's look at the implementation. Let's start with the server side here because that'll give a quick idea of the doc structure. As I mentioned the server renders data from an ASP.NET MVC view. On the list page when returning to the list page from the display page (or a host of other pages) looks like this: https://classifieds.gorge.net/list?back=True The query string value is a flag, that indicates whether the server should render the HTML. Here's what the top level MVC Razor view for the list page looks like:@model MessageListViewModel @{ ViewBag.Title = "Classified Listing"; bool isBack = !string.IsNullOrEmpty(Request.QueryString["back"]); } <form method="post" action="@Url.Action("list")"> <div id="SizingContainer"> @if (!isBack) { @Html.Partial("List_CommandBar_Partial", Model) <div id="PostItemContainer" class="scrollbox" xstyle="-webkit-overflow-scrolling: touch;"> @Html.Partial("List_Items_Partial", Model) @if (Model.RequireLoadEntry) { <div class="postitem loadpostitems" style="padding: 15px;"> <div id="LoadProgress" class="smallprogressright"></div> <div class="control-progress"> Load additional listings... </div> </div> } </div> } </div> </form> As you can see the query string triggers a conditional block that if set is simply not rendered. The content inside of #SizingContainer basically holds  the entire page's HTML sans the headers and scripts, but including the filter options and menu at the top. In this case this makes good sense - in other situations the fact that the menu or filter options might be dynamically updated might make you only cache the list rather than essentially the entire page. In this particular instance all of the content works and produces the proper result as both the list along with any filter conditions in the form inputs are restored. Ok, let's move on to the client. On the client there are two page level functions that deal with saving and restoring state. Like the counter example I showed earlier, I like to wrap the logic to save and restore values from sessionState into a separate function because they are almost always used in several places.page.saveData = function(id) { if (!sessionStorage) return; var data = { id: id, scroll: $("#PostItemContainer").scrollTop(), html: $("#SizingContainer").html() }; sessionStorage.setItem("list_html",JSON.stringify(data)); }; page.restoreData = function() { if (!sessionStorage) return; var data = sessionStorage.getItem("list_html"); if (!data) return null; return JSON.parse(data); }; The data that is saved is an object which contains an ID which is the selected element when the user clicks and a scroll position. These two values are used to reset the scroll position when the data is used from the cache. Finally the html from the #SizingContainer element is stored, which makes for the bulk of the document's HTML. In this application the HTML captured could be a substantial bit of data. If you recall, I mentioned that the server side code renders a small chunk of data initially and then gets more data if the user reads through the first 50 or so items. The rest of the items retrieved can be rather sizable. Other than the JSON deserialization that's Ok. Since I'm using SessionStorage the storage space has no immediate limits. Next is the core logic to handle saving and restoring the page state. At first though this would seem pretty simple, and in some cases it might be, but as the following code demonstrates there are a few gotchas to watch out for. Here's the relevant code I use to save and restore:$( function() { … var isBack = getUrlEncodedKey("back", location.href); if (isBack) { // remove the back key from URL setUrlEncodedKey("back", "", location.href); var data = page.restoreData(); // restore from sessionState if (!data) { // no data - force redisplay of the server side default list window.location = "list"; return; } $("#SizingContainer").html(data.html); var el = $(".postitem[data-id=" + data.id + "]"); $(".postitem").removeClass("highlight"); el.addClass("highlight"); $("#PostItemContainer").scrollTop(data.scroll); setTimeout(function() { el.removeClass("highlight"); }, 2500); } else if (window.noFrames) page.saveData(null); // save when page loads $("#SizingContainer").on("click", ".postitem", function() { var id = $(this).attr("data-id"); if (!id) return true; if (window.noFrames) page.saveData(id); var contentFrame = window.parent.frames["Content"]; if (contentFrame) contentFrame.location.href = "show/" + id; else window.location.href = "show/" + id; return false; }); … The code starts out by checking for the back query string flag which triggers restoring from the client cache. If cached the cached data structure is read from sessionStorage. It's important here to check if data was returned. If the user had back=true on the querystring but there is no cached data, he likely bookmarked this page or otherwise shut down the browser and came back to this URL. In that case the server didn't render any detail and we have no cached data, so all we can do is redirect to the original default list view using window.location. If we continued the page would render no data - so make sure to always check the cache retrieval result. Always! If there is data the it's loaded and the data.html data is restored back into the document by simply injecting the HTML back into the document's #SizingContainer element:$("#SizingContainer").html(data.html); It's that simple and it's quite quick even with a fully loaded list of additional items and on a phone. The actual HTML data is stored to the cache on every page load initially and then again when the user clicks on an element to navigate to a particular listing. The former ensures that the client cache always has something in it, and the latter updates with additional information for the selected element. For the click handling I use a data-id attribute on the list item (.postitem) in the list and retrieve the id from that. That id is then used to navigate to the actual entry as well as storing that Id value in the saved cached data. The id is used to reset the selection by searching for the data-id value in the restored elements. The overall process of this save/restore process is pretty straight forward and it doesn't require a bunch of code, yet it yields a huge improvement in the usability of the site on mobile devices (or anybody who uses the non-frames view). Some things to watch out for As easy as it conceptually seems to simply store and retrieve cached content, you have to be quite aware what type of content you are caching. The code above is all that's specific to cache/restore cycle and it works, but it took a few tweaks to the rest of the script code and server code to make it all work. There were a few gotchas that weren't immediately obvious. Here are a few things to pay attention to: Event Handling Logic Timing of manipulating DOM events Inline Script Code Bookmarking to the Cache Url when no cache exists Do you have inline script code in your HTML? That script code isn't going to run if you restore from cache and simply assign or it may not run at the time you think it would normally in the DOM rendering cycle. JavaScript Event Hookups The biggest issue I ran into with this approach almost immediately is that originally I had various static event handlers hooked up to various UI elements that are now cached. If you have an event handler like:$("#btnSearch").click( function() {…}); that works fine when the page loads with server rendered HTML, but that code breaks when you now load the HTML from cache. Why? Because the elements you're trying to hook those events to may not actually be there - yet. Luckily there's an easy workaround for this by using deferred events. With jQuery you can use the .on() event handler instead:$("#SelectionContainer").on("click","#btnSearch", function() {…}); which monitors a parent element for the events and checks for the inner selector elements to handle events on. This effectively defers to runtime event binding, so as more items are added to the document bindings still work. For any cached content use deferred events. Timing of manipulating DOM Elements Along the same lines make sure that your DOM manipulation code follows the code that loads the cached content into the page so that you don't manipulate DOM elements that don't exist just yet. Ideally you'll want to check for the condition to restore cached content towards the top of your script code, but that can be tricky if you have components or other logic that might not all run in a straight line. Inline Script Code Here's another small problem I ran into: I use a DateTime Picker widget I built a while back that relies on the jQuery date time picker. I also created a helper function that allows keyboard date navigation into it that uses JavaScript logic. Because MVC's limited 'object model' the only way to embed widget content into the page is through inline script. This code broken when I inserted the cached HTML into the page because the script code was not available when the component actually got injected into the page. As the last bullet - it's a matter of timing. There's no good work around for this - in my case I pulled out the jQuery date picker and relied on native <input type="date" /> logic instead - a better choice these days anyway, especially since this view is meant to be primarily to serve mobile devices which actually support date input through the browser (unlike desktop browsers of which only WebKit seems to support it). Bookmarking Cached Urls When you cache HTML content you have to make a decision whether you cache on the client and also not render that same content on the server. In the Classifieds app I didn't render server side content so if the user comes to the page with back=True and there is no cached content I have to a have a Plan B. Typically this happens when somebody ends up bookmarking the back URL. The easiest and safest solution for this scenario is to ALWAYS check the cache result to make sure it exists and if not have a safe URL to go back to - in this case to the plain uncached list URL which amounts to effectively redirecting. This seems really obvious in hindsight, but it's easy to overlook and not see a problem until much later, when it's not obvious at all why the page is not rendering anything. Don't use <body> to replace Content Since we're practically replacing all the HTML in the page it may seem tempting to simply replace the HTML content of the <body> tag. Don't. The body tag usually contains key things that should stay in the page and be there when it loads. Specifically script tags and elements and possibly other embedded content. It's best to create a top level DOM element specifically as a placeholder container for your cached content and wrap just around the actual content you want to replace. In the app above the #SizingContainer is that container. Other Approaches The approach I've used for this application is kind of specific to the existing server rendered application we're running and so it's just one approach you can take with caching. However for server rendered content caching this is a pattern I've used in a few apps to retrofit some client caching into list displays. In this application I took the path of least resistance to the existing server rendering logic. Here are a few other ways that come to mind: Using Partial HTML Rendering via AJAXInstead of rendering the page initially on the server, the page would load empty and the client would render the UI by retrieving the respective HTML and embedding it into the page from a Partial View. This effectively makes the initial rendering and the cached rendering logic identical and removes the server having to decide whether this request needs to be rendered or not (ie. not checking for a back=true switch). All the logic related to caching is made on the client in this case. Using JSON Data and Client RenderingThe hardcore client option is to do the whole UI SPA style and pull data from the server and then use client rendering or databinding to pull the data down and render using templates or client side databinding with knockout/angular et al. As with the Partial Rendering approach the advantage is that there's no difference in the logic between pulling the data from cache or rendering from scratch other than the initial check for the cache request. Of course if the app is a  full on SPA app, then caching may not be required even - the list could just stay in memory and be hidden and reactivated. I'm sure there are a number of other ways this can be handled as well especially using  AJAX. AJAX rendering might simplify the logic, but it also complicates search engine optimization since there's no content loaded initially. So there are always tradeoffs and it's important to look at all angles before deciding on any sort of caching solution in general. State of the Session SessionState and LocalStorage are easy to use in client code and can be integrated even with server centric applications to provide nice caching features of content and data. In this post I've shown a very specific scenario of storing HTML content for the purpose of remembering list view data and state and making the browsing experience for lists a bit more friendly, especially if there's dynamically loaded content involved. If you haven't played with sessionStorage or localStorage I encourage you to give it a try. There's a lot of cool stuff that you can do with this beyond the specific scenario I've covered here… Resources Overview of localStorage (also applies to sessionStorage) Web Storage Compatibility Modernizr Test Suite© Rick Strahl, West Wind Technologies, 2005-2013Posted in JavaScript  HTML5  ASP.NET  MVC   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • ScrollViewer.EnsureVisible for Windows Phone

    - by Daniel Moth
    In my Translator By Moth app, on both the current and saved pivot pages the need arose to programmatically scroll to the bottom. In the former, case it is when a translation takes place (if the text is too long, I want to scroll to the bottom of the translation so the user can focus on that, and not their input text for translation). In the latter case it was when a new translation is saved (it is added to the bottom of the list, so scrolling is required to make it visible). On both pages a ScrollViewer is used. In my exploration of the APIs through intellisense and msdn I could not find a method that auto scrolled to the bottom. So I hacked together a solution where I added a blank textblock to the bottom of each page (within the ScrollViewer, but above the translated textblock and the saved list) and tried to make it scroll it into view from code. After searching the web I found a little algorithm that did most of what I wanted (sorry, I do not have the reference handy, but thank you whoever it was) that after minor tweaking I turned into an extension method for the ScrollViewer that is very easy to use: this.Scroller.EnsureVisible(this.BlankText); The method itself I share with you here: public static void EnsureVisible(this System.Windows.Controls.ScrollViewer scroller, System.Windows.UIElement uiElem) { System.Diagnostics.Debug.Assert(scroller != null); System.Diagnostics.Debug.Assert(uiElem != null); scroller.UpdateLayout(); double maxScrollPos = scroller.ExtentHeight - scroller.ViewportHeight; double scrollPos = scroller.VerticalOffset - scroller.TransformToVisual(uiElem).Transform(new System.Windows.Point(0, 0)).Y; if (scrollPos > maxScrollPos) scrollPos = maxScrollPos; else if (scrollPos < 0) scrollPos = 0; scroller.ScrollToVerticalOffset(scrollPos); } I am sure there are better ways, but this "worked for me" :-) Comments about this post by Daniel Moth welcome at the original blog.

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  • Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox

    - by Asian Angel
    Do you need to make the most efficient use possible of vertical UI space on your system’s screen, but have horizontal space to spare? Now you can shift the toolbar icons and their awesome functionality to a slim sidebar in Firefox using the Vertical Toolbar extension. As you can see above the sidebar even picked up on our Personas Theme to help it blend in nicely with the rest of the browser. You can access the options for the new toolbar by right clicking within the toolbar area. These are the options for the toolbar…you can choose the side of Firefox that works best for toolbar placement, adjust display, hiding, & animation settings, define how the buttons display, and add/remove additional buttons as desired. Once you open the Customize Toolbar Window make any desired additions or removals just like you would before on the top UI section and close when finished. Note: Works with Firefox 4.0b7pre – 4.0.* Vertical Toolbar [Mozilla Add-ons] Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar Reader for Android Updates; Now with Feed Widgets and More

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  • Optimize SUMMARIZE with ADDCOLUMNS in Dax #ssas #tabular #dax #powerpivot

    - by Marco Russo (SQLBI)
    If you started using DAX as a query language, you might have encountered some performance issues by using SUMMARIZE. The problem is related to the calculation you put in the SUMMARIZE, by adding what are called extension columns, which compute their value within a filter context defined by the rows considered in the group that the SUMMARIZE uses to produce each row in the output. Most of the time, for simple table expressions used in the first parameter of SUMMARIZE, you can optimize performance by removing the extended columns from the SUMMARIZE and adding them by using an ADDCOLUMNS function. In practice, instead of writing SUMMARIZE( <table>, <group_by_column>, <column_name>, <expression> ) you can write: ADDCOLUMNS(     SUMMARIZE( <table>, <group by column> ),     <column_name>, CALCULATE( <expression> ) ) The performance difference might be huge (orders of magnitude) but this optimization might produce a different semantic and in these cases it should not be used. A longer discussion of this topic is included in my Best Practices Using SUMMARIZE and ADDCOLUMNS article on SQLBI, which also include several details about the DAX syntax with extended columns. For example, did you know that you can create an extended column in SUMMARIZE and ADDCOLUMNS with the same name of existing measures? It is *not* a good thing to do, and by reading the article you will discover why. Enjoy DAX!

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  • CodePlex Daily Summary for Saturday, May 01, 2010

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Not only get the diff, but also get how to transform one string to another. Two methods are provid...Fireworks: Fireworks is an extensible application framework designed to create custom tools for managing XML (XSD only) documents. Fireworks is especially us...General Ontology & Text Engineering Architecture for .NET: GOTA is an OpenSource online & collaborative text engineering development environment for .NET. GOTA aims to simplify and parallelize the developme...IsWiX: IsWiX is a Windows Installer XML ( WiX ) document editor based on the Fireworks Application Framework. Is WiX enables non-setup developers to colla...kp.net: Managed ADO.Net provider for kdb+ database.LinqToTextures: A node-based editor for creating procedural textures and HLSL shaders. Developed in C#. Can export PNG images, .fx files for HLSL, or XML that can ...MTG Match Counter: MTG Match Counter is a simple life\match counter, designed for Magic: The Gathering players.MVP Passive View Control Model Framework: Framework that builds on the power of my view on the Passive View pattern which I call the Passive Ciew Control Model. This framework is my impleme...My Notepad: Get an all-tabbed, free floating type of a notepad - a perfect replacement for the current notepad for a normal computer user. You no longer have t...NerdDinnerAddons: Add-ons for ASP.NET MVC NerdDinner ApplicationrITIko: Questo progetto è stato creato come esperimento dalla classe 4G dell'ITIS B. Pascal di Cesena. Serve (per ora) solo per testate il funzionamento d...Semester Manager: CVUT Semester ManagerSharePoint 2010 PowerShell Scripts & Utilities: A collection of PowerShell modules / scirpts for managing SharePoint 2010 deployments and product releated featuresSmartBot: Irc client for searching information.StackOverflow Desktop Client in C# and WPF: StackOverflow client written in WPF and C# that can notify you of new posts for tags that you've marked interesting on the actual website. Works...TimeSaver - virtual worlds at the service of e-Gov: TimeSaver aims at the construction of tools to build specialized virtual worlds for the provision of services for e-Gov. TimeSaver has received fin...TinyProject: This is a tiny project developing code.Turtle Logo (programming language) for Kids: Turtle Logo for Kids teaches kids step by step the basic of computers programmong. LOGO is a computer programming language used for functional prog...UITH- Hospital Manaegment: A simple hospital or clinic management softwareUniHelper: UniHelper is a tool to help simplify .NET development with UniData/UniVerse database servers.Value Injecter: useful for filling/reading forms (asp.net-mvc views, webforms, winforms, any object) with data from another (or more) object(s) and after you can g...Vortex2D.NET Game Engine: Easy to use 2D game engine for Windows based on .NET and Direct3D9Yame Sample Project: 这个是学习项目,可能用内容:ExtJs,VS2010,Enterprise Library 5,Unity 2New ReleasesAll-In-One Code Framework: All-In-One Code Framework 2010-04-30: Improved and Newly Added Examples:For an up-to-date list, please refer to All-In-One Code Framework Sample Catalog. Samples for ASP.NET Name D...C#Mail: Higuchi.Mail.dll (2010.4.30 ver): Higuchi.Mail.dll at 2010-3-30 version.CycleMania Starter Kit EAP - ASP.NET 4 Problem - Design - Solution: Cyclemania 0.08.66: see Source Code tab for recent change historyDestinationPDF a PDF exporter that works from the browser: Initial release: DestinationPDF library DestinationPDF javascript helper functions Sample htmlDotNetNuke 5 Thai Language Pack: Resource Pack Core: Bata Released for DNN Core & Module Thai LanuageDotNetNuke Skins Pack: DNN 80 Skins Pack.: This released is the first for DNN 4 & 5 with Skin Token Design (legacy skin support on DNN 4 & 5)DynamicJson: Release 1.0.0.0: 1st ReleaseFamAccountor: 家庭账薄 预览版v0.0.3: 家庭账薄 预览版v0.0.3 该版本提供基本功能,还有待扩展! Feature: 完成【系统管理】下【注销用户】、【重新记账】功能。 添加导出EXCEL功能。Feed Viewer: 3.7.0.0: new tray icon better fitting with Windows 7 and Vista tray icons style bugfixesFind diff of two text or xml files. Transform from one to another.: Beta1 Release Source Code and Sample App: This is the first release. The source code compiled on VS2010 DotNET4.0. The Sample App EXE and DLL require DotNET4.0 I did not use any new featu...Fireworks: Fireworks 1.0.264.0: Build 1.0.264.0 - Internal TFS Changeset 815 Fireworks.msi - Integrated Fireworks Application example packaged with Windows Installer. FireworksM...Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts v3.0.9 beta Released: Hi, This release contains the following enhancements: 1) Multilevel property path in DataBinding- Now onwards you will be able to work with multi...Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts v3.5.2 beta Released: Hi, This release contains the following enhancements: 1) Multilevel property path in DataBinding- Now onwards you will be able to work with multi...General Ontology & Text Engineering Architecture for .NET: GOTA Server Types: This document shows current GOTA Server TypesHammock for REST: Hammock v1.0.2: v1.0.2 Changes.NET 4.0 and Client Profile security model fix Fixes for OAuth access tokens and verifiers Silverlight proxy values are now surfa...Industrial Dashboard: ID 3.0: Added Example with IndustrialGrid. Added Example with SidebarAccordionMenu.IsWiX: IsWiX 1.0.258.0: Build 1.0.258.0 built against Fireworks 1.0.264.0JpAccountingBeta: JpBeta: This is A testNerdDinnerAddons: NerdDinnerAddons: Add-ons for ASP.NET MVC NerdDinner Applicationopen gaze and mouse analyzer: Ogama 3.2: This release was published on 30.04.2010 and is mainly a bugfix release on improving the interface to the ITU GazeTracker. For the list of changes ...Perspective - Easy 2D and 3D programming with WPF: Perspective 2.0 beta: A .NET 4.0 version of Perspective with many improvements : New panels (see also Silverlight version) : BeePanel : a honeycomb layout wrap panel. ...Protoforma | Tactica Adversa: Skilful 0.3.5.562 RC2: RC2 MD5 checksum: 95703dcd6085f0872e9b34c2e1a8337d SHA-1 checksum: 8e63f6fe7e3a01e7e47bc2cbf20210725ddd11cfRule 18 - Love your clipboard: Rule 18 - version 1.2: This is the forth public release for Rule 18 and includes a bunch of bug fixes and tweaks to the tool. The tool has extensive usage in the field an...Sharp DOM: Sharp DOM 1.0: This is the first release of Sharp DOM project. It includes the major features needed for stronly typed HTML code development, including support fo...sMAPedit: sMAPedit v0.7: Added: segment visualization Added: remove & create paths, points, segments Added: saving file function Added: editing of fields in points an...sTASKedit: sTASKedit v0.7b (Alpha): Fixed: leave focus when saving to avoid missing change of last edited field Fixed: when changing task id, all cryptkeys are changed and all texts...TidyTinyPics: TidyTinyPics 0.13: We can avoid to have the renaming done automatically.TimeSaver - virtual worlds at the service of e-Gov: JamSession4TimeSaver: JamSession v0.9 - this is the first draft source code for the JamSession orchestration language, which shall be used in TimeSaver. Future versions...Tribe.Cache: Tribe.Cache 1.0: Release 1.0Turtle Logo (programming language) for Kids: Logo: Source code in C# on Silverlight using Visual Studio 2010UITH- Hospital Manaegment: UITH-Hospital: A simple hospital management system. to use the program you need to install sql express server 2005 .net framework 3.5VCC: Latest build, v2.1.30430.0: Automatic drop of latest buildVisual Studio 2010 AutoScroller Extension: AutoScroller v0.2: A Visual studio 2010 auto-scroller extension. Simply hold down your middle mouse button and drag the mouse in the direction you wish to scroll, fu...Most Popular ProjectsRawrWBFS ManagerAJAX Control Toolkitpatterns & practices – Enterprise LibraryMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)iTuner - The iTunes CompanionASP.NETDotNetNuke® Community EditionMost Active Projectspatterns & practices – Enterprise LibraryRawrIonics Isapi Rewrite FilterHydroServer - CUAHSI Hydrologic Information System Serverpatterns & practices: Azure Security GuidanceGMap.NET - Great Maps for Windows Forms & PresentationTinyProjectSqlDiffFramework-A Visual Differencing Engine for Dissimilar Data SourcesFarseer Physics EngineNB_Store - Free DotNetNuke Ecommerce Catalog Module

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  • Starting a Java activity in Unity3d Android

    - by Matthew Pavlinsky
    I wrote a small Java activity extension of UnityPlayerActivity similar to what is described in the Unity docs. It has a method for displaying a song picking interface using an ACTION_GET_CONTENT intent. I start this activity using startActivityForResult() and it absolutely kills the performance of my Unity game when it is finished, it drops to about .1 FPS afterwords. I've changed removed the onActivityResult function and even tried starting the activity from inside an onKeyDown event in Java to make sure my method of starting the activity from Unity was not the problem. Heres the code in a basic sense: package com.company.product; import com.unity3d.player.UnityPlayerActivity; import com.unity3d.player.UnityPlayer; import android.os.Bundle; import android.util.Log; import android.content.Intent; public class SongPickerActivity extends UnityPlayerActivity { private Intent myIntent; final static int PICK_SONG = 1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i("SongPickerActivity", "OnCreate"); myIntent = new Intent(Intent.ACTION_GET_CONTENT); myIntent.setType("audio/*"); } public void Pick() { Log.i("SongPickerActivity", "Pick"); startActivityForResult(myIntent, PICK_SONG); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); } } This is causing me a bit more of a headache than it should and I would be thankful for any sort of advice. Does anyone have any experience with using custom activities in Unity Android or any insight on why this is happening or how to resolve this?

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  • How do I roll back to the shipped version of Thunderbird?

    - by kallakafar
    I was using thunderbird v15.0 on ubuntu 12.04 LTS till now, and have the lightning extension installed to manage calendar within thunderbird application. everything was working fine until i decided to update thunderbird to the latest version 16.0 from ubuntu repository. installation was successful, and the profile everything was taken care of perfectly, except that now lightning is not working - it is disabled as lightning v1.7 is NOT compatible with latest thunderbird v16 yet. As a result i am at loss with all my scheduling. now, i would like to go back to thunderbird v15 so that i can use lightning. ubuntu repository only gives TB v16 now. on mozilla site, they are still giving v15 for linux, so i downloaded the tarball and uncompressed using command line. now i have a folder called thunderbird. there are no readme/ configuration files. there are following 'executable files' inside this folder: crashreporter, mozilla-remote-client, plugin-container, thunderbird and thunderbird-bin. i tried invoking thunderbird and thunderbird-bin from command line using sudo, still nothing is opening up. i have execute permissions for this folder contents. i m quite new to linux. please let me know why i m not able to launch thunderbird. did i install it incorrectly? please let me know if i can get a .deb package for TB v15.

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  • Easy Credential Caching for Git

    A common question since launching our Git support is whether there is a way to cache your username and password so you don’t have to enter it on every push.  Well thanks to Andrew Nurse from the ASP.Net team, there is now a great solution for this! Credential Caching in Windows to the Rescue Using the Git extension point for credential caching, Andrew created an integration into the Windows Credentials store. After installing git-credential-winstore instead of getting that standard prompt for a username/password, you will get a Windows Security prompt. From here your credentials for CodePlex will be stored securely within the Windows Credential Store. Setup The setup is pretty easy. Download the application from Andrew's git-credential-winstore project. Launch the executable and select yes to have it prompt for credentials. That's it. Make sure you are running the latest version of msysgit, since the credential's API is fairly new. Thanks to Andrew for sharing his work.  If you have suggestions or improvements you can fork the code here.

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  • CodePlex Daily Summary for Saturday, December 18, 2010

    CodePlex Daily Summary for Saturday, December 18, 2010Popular ReleasesHacker Passwords: HackerPasswords.zip: Source code, executable and documentationWatchersNET.SiteMap: WatchersNET.SiteMap 01.03.03: Whats NewSkin Object: You can now filter by Terms for Example use: <object id="dnnSITEMAPSL" codetype="dotnetnuke/server" codebase="SITEMAPSL"> <param name="TaxMode" value="terms" /> <param name="TaxTerms" value="TermName1,TermName2" /> </object> changes Tax Term Filter should work correct nowSubtitleTools: SubtitleTools 1.3: - Added .srt FileAssociation & Win7 ShowRecentCategory feature. - Applied UnifiedYeKe to fix Persian search problems. - Reduced file size of Persian subtitles for uploading @OSDB.EnhSim: EnhSim 2.2.3 ALPHA: 2.2.3 ALPHAThis release adds in the changes for 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Added in th...Facebook C# SDK: 4.1.0: - Lots of bug fixes - Removed Dynamic Runtime Language dependencies from non-dynamic platforms. - Samples included in release for ASP.NET, MVC, Silverlight, Windows Phone 7, WPF, WinForms, and one Visual Basic Sample - Updated to Json.net - BREAKING CHANGE: Some renames and changes with Authorizer, CanvasAuthorizer, and Authorization action filters - BREAKING CHANGE: Renamed ApiSecret to AppSecret to be consistent with Facbeook's rename of the property - Added additional authentication helper...WCF Community Site: WCF Web APIs 10.12.17: Welcome to the second release of WCF Web APIs on codeplex Here is what is new in this release. WCF Support for jQuery - create WCF web services that are easy to consume from JavaScript clients, in particular jQuery. Better support for using JsonValue as dynamic Support for JsonValue change notification events for databinding and other purposes Support for going between JsonValue and CLR types WCF HTTP - create HTTP / REST based web services. This is a minor release which contains fixe...LiveChat Starter Kit: LCSK v1.0: This is a working version of the LCSK for Visual Studio 2010, ASP.NET MVC 3 (using Razor View Engine). this is still provider based (with 1 provider Sql) and this is still using WebService and Windows Forms operator console. The solution is cleaner, with an installer to create tables etc. Let me know your feedbackOrchard Project: Orchard 0.9: Orchard Release Notes Build: 0.9.253 Published: 12/16/2010 How to Install OrchardTo install the Orchard tech preview using Web PI, follow these instructions: http://www.orchardproject.net/docs/Installing-Orchard-Using-Web-PI.ashx Web PI will detect your hardware environment and install the application. --OR-- Alternatively, to install the release manually, download the Orchard.Web.0.9.253.zip file. The zip contents are pre-built and ready-to-run. Simply extract the contents of the Orch...SplendidCRM: SplendidCRM 5.0 Community Edition: SplendidCRM Software has adopted the GNU Affero General Public License Version 3 (AGPLv3) for its Community Edition. This release includes the full set of SQL source code in the Community Edition, something that was previously only available in the Professional and Enterprise Editions. An article on the subject of Commercial Open-Source licensing has been posted at http://www.codeproject.com/KB/architecture/splendid-guide-article6.aspx.DotSpatial: DotSpatial 12-15-2010: This release contains a few minor bug fixes and hopefully the GDAL libraries for the 3.5 x86 build actually built to the correct directory this time.DotNetNuke® Community Edition: 05.06.01 Beta: This is the initial Beta of DotNetNuke 5.6.1. See the DotNetNuke Roadmap a full list of changes in this release.MSBuild Extension Pack: December 2010: Release Blog Post The MSBuild Extension Pack December 2010 release provides a collection of over 380 MSBuild tasks. A high level summary of what the tasks currently cover includes the following: System Items: Active Directory, Certificates, COM+, Console, Date and Time, Drives, Environment Variables, Event Logs, Files and Folders, FTP, GAC, Network, Performance Counters, Registry, Services, Sound Code: Assemblies, AsyncExec, CAB Files, Code Signing, DynamicExecute, File Detokenisation, GU...Access Control Service Samples and Documentation (Labs): Samples-R3: Contains latest ACS samples (corresponding to R3 release) that show how to integrate ACS with web services, ASP.NET websites (Web Forms and MVC) and on how to interact with the ACS Management Service. The Readmes for these samples are available here.TweetSharp: TweetSharp v2.0.0.0 - Preview 5: Documentation for this release may be found at http://tweetsharp.codeplex.com/wikipage?title=UserGuide&referringTitle=Documentation. Note: This code is currently preview quality. Preview 5 ChangesMaintenance release with user reported fixes Preview 4 ChangesReintroduced fluent interface support via satellite assembly Added entities support, entity segmentation, and ITweetable/ITweeter interfaces for client development Numerous fixes reported by preview users Preview 3 ChangesNumerous ...Silverlight Contrib: Silverlight Contrib 2010.1.0: 2010.1.0 New FeaturesCompatibility Release for Silverlight 4 and Visual Studio 2010FlickrNet API Library: 3.1.4000: Newest release. Now contains dedicated Windows Phone 7 DLL as well as all previous DLLs. Also contains Windows Help file documentation now as standard.mojoPortal: 2.3.5.8: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2358-released.aspx Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code. To download the source code see the Source Code Tab I recommend getting the latest source code using TortoiseHG, you can get the source code corresponding to this release here.Microsoft All-In-One Code Framework: Visual Studio 2010 Code Samples 2010-12-13: Code samples for Visual Studio 2010Wii Backup Fusion: Wii Backup Fusion 0.9 Beta: - Aqua or brushed metal style for Mac OS X - Shows selection count beside ID - Game list selection mode via settings - Compare Files <-> WBFS game lists - Verify game images/DVD/WBFS - WIT command line for log (via settings) - Cancel possibility for loading games process - Progress infos while loading games - Localization for dates - UTF-8 support - Shortcuts added - View game infos in browser - Transfer infos for log - All transfer routines rewritten - Extract image from image/WBFS - Support....NETTER Code Starter Pack: v1.0.beta: '.NETTER Code Starter Pack ' contains a gallery of Visual Studio 2010 solutions leveraging latest and new technologies and frameworks based on Microsoft .NET Framework. Each Visual Studio solution included here is focused to provide a very simple starting point for cutting edge development technologies and framework, using well known Northwind database (for database driven scenarios). The current release of this project includes starter samples for the following technologies: ASP.NET Dynamic...New ProjectsAsyncSimpleDB: Async access via .Net to Amazon's SimpleDB.BCS Tester Man - The BCS Test Client: BCS Tester Man is a BCS Test Client that makes it easier for SharePoint BCS Model Developers to test Models and External Content Types. You'll no longer have to create and configure Business Data Web Parts or External Lists. It's developed in C#. UI is WPF with MVVM.Client-side Templated Script Control: Allows a developer to add a repeater-style templated list control to a web page that will be data bound client-side, and may respond to client events. The control may be data bound by a web service call on initialization, and may also have it's data source set via client code.Conquer Online Emulation: Project Emulation is a set of tools and libraries to use for creating your own 'emulation' of the servers used by Conquer Online.CSV Report Generator for SQL: C# application for exporting SQL queries into a CSV file for easy importing into Excel, Access, and any other programs that support CSV file importing. This application is handy for extraordinarily large query results that typically cause stability issues for other programs.DFTSPAB: For info see [url:http://creativx.net/forums/general-software/20760-take-ownership-set-permissions-back-up-file-all-one-utillity.html]Directories Creater: <dirCreater> create lots of directories in simple way! <c#> <vs2010>DNN Rad Tag Cloud: A module that uses Telerik's Tag Cloud control to display tags applied in a DotNetNuke install. dotFB : Facebook Graph API client library for .NET: dotFB is a facebook Graph API client library for Windows, Web and Phone Client.Ganaderia Santa Fe: RevisiónsdfsdGoogle Translate .NET: A .NET class library for the Google Translate API v2.I Wanna Make A Game: Fun project to make a 2D platformer written in C#. Written by students from the University of Waterloo, the project explores several computer science topics; from implementing a scripting language to efficient spatial computation.Neddle: Neddle is an open source, SCORM compliant learning management system (LMS) built on the .NET platform using C#.Przetwarzanie sygnalów: Program zaliczeniowy z przedmiotu "Wstep do przetwarzania obrazów i sygnalów"Quickfix message wrapper: Quickfix message strongly typed wrapper generator (T4 template) Reading List: Simple ASP .NET MVC application to manage a list of books scheduled to be read. The application queries Amazon web services for book titles to add to the list.reservierung: Project for the university for applied sciences DeggendorfRTP HTML Newsletter: This DotNetNuke module allows you to create templated HTML newsletters, and email to a specific DNN role. Newsletters are automatically archived for later access.SQL Server Master Data Services Utilities: A set of useful add-ons for SQL Server Master Data Services, including utilities for generating an MDS model, loading the model, writing a custom UI for model data and integrating the model with SharePoint BCS.testerekproject: bla bla blaTools for social network VKontakte: Tools for developing desktop applications for social network VKontakte.Virtualegis: Control de código para Virtualegis.

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  • .NET Rocks is on the Road Again!

    - by Scott Spradlin
    Carl and Richard are loading up the DotNetMobile (a 30 foot RV) and driving to our town again to show off their favorite bits of Visual Studio 2010 and .NET 4.0! Richard talks about Web load testing and Carl talks about Silverlight 4.0 and multimedia. And to make the night even more fun, they are going to bring a mystery rock star from the Visual Studio world to the event and interview them for a special .NET Rocks Road Trip show series. Along the way we’ll be giving away some great prizes, showing off some awesome technology and having a ton of laughs. So come out to the most fun you can have in a geeky evening - and learn a few things along the way about web load testing and Silverlight 4! And one lucky person at the event will win "Ride Along with Carl and Richard" and get to board the RV and ride with the boys to the next town on the tour -- Chicago. (don’t worry, they will get you home again!) So come out to the most fun you can have in a geeky evening – and find out what’s new and cool in Visual Studio 2010! To get insure we have sufficient food for everyone, please register for this event at http://stlnet.eventbrite.com This registration information will only be used to obtain accurate counts for food preparation. All other answers are optional and will be used for purely statistical analysis. No information will be shared outside the St. Louis .NET User Group. Here is a list of prizes to be given away at the event: Telerik Premium Collection Pre-Emptive One Year Commercial Runtime Intelligence license Red Gate ANTS Memory Profiler Quest Toad Extension for Visual Studio DevExpress Code Rush and Refactor Pro Grape City Active Report/BI Suite Grape City Spread 5.0 JetBrains Resharper Component One Studio for ASP.NET Component One Studio for Silverlight Please check out the event sponsors: Visit http://www.dotnetrocks.com/roadtrip for more information! Thursday, April 29, 2010 6:00 pm - Food and social 6:30 pm - .NET Rocks Interview 7:15 pm - Richard Campbell 8:00 pm - Carl Franklin 8:45 pm - prizes!

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  • CodePlex Daily Summary for Wednesday, April 07, 2010

    CodePlex Daily Summary for Wednesday, April 07, 2010New ProjectsAStar.net: AStar.net is a project for compute the A* path finding algorithm. It expose classes and interface that can be used for all purpose with multi-threa...Auto Complete for MOSS 2007: Auto Complete for MOSS 2007 (WSS 3.0) makes it easier for all user to fill list of nessesary string in the field. AutoPoco: AutoPoco is a framework with the purpose of fluently building test data from Plain Old CLR ObjectsBlueProject: BlueProjectColor Picker for MOSS 2007: Color picker for MOSS 2007 (WSS 3.0) makes it easier for some user to choose color in the field. ComBrowser2: ComBrowser2DCommunication: Communication Components and Software By Delphi On Windows.DirST: Allows one to replicate a DIRectory STructure without copying files. Written in C#.Discussion column for MOSS 2007: Discussion column for MOSS 2007/ (WSS 3.0) is a field column for different type lists such as Custom List, Document Library, Issue Tracking, not on...Effect Custom Tool for Visual Studio: Effect Custom Tool for Visual Studio is a visual studio 2008 extension that helps you generate c# classes from effect (*.fx) files for use with Xna...Energon: Energon is a framework to create and run software energy consumption tests. Requires a couple of PC with a TCP connections, a phidgets ammeter and ...Fiansa: Proyecto FiansaFirstSpark: FirstSpark is a sample Spark View Engine projectISOM: Internetowy System Obsługi Magisterek La Carta Mas Alta: La Carta Mas Alta is an open source card game totally written in PHP and HTML. This cross-platform and cross-browser game was tested under BeOS, Li...Near forums - ASP.NET MVC forum engine: Open source SEO friendly ASP.NET MVC forum engine. Features: Navigation in forums, topics and tags; login with Facebook Connect and Single sign-on;...PEC: Still editingPowershell Zip Export/Import Cmdlet Module: Powershellzip is a powershell module with a set of Cmdlets for zip file export, import and processingProgress bar for MOSS 2007: Progress bar for MOSS 2007 (WSS 3.0) makes it easier for some user to display progress in the field in percent (0-100%). SharePoint Accelerators: This project delivers a number of SharePoint accelerators that make your every-day SharePoint life easier.Shweet: SharePoint 2010 Team Messaging built with Pex: Shweet is a simple SharePoint Foundation 2010 application that allows teams to do messaging and subscriptions in the style similar to twitter. De...SilverlightEncoder: Video and audio encoder for Silverlight 4 Out-of-BrowserStarMath: Static Array Math Library: While there are already countless math libraries for performing common matrix/array functions, StarMath is distinguished by its simplicity and flex...StringToNumber: StringToNumber is a .NET library for parsing numbers in their written form into their numeric equivalent. It's developed in C#. It was created to...SubstitutionITIS: <project name="Substitution" language="c-sharp" to="myschool" whatdo="manageSubstitutionTeachers" />TamTam.SharePoint2010.LinkedIn: SP2010 and LinkedIn working togetherThink And Explore: Think my own wayusenet-o-matic: small mobile optimised webscript to search various NZB sources like newzbin and NZBmatrix and send donwloads to your SABnzbd server. Valid HTML5 Templates for VisualStudio: This project will host valid HTML templates for Visual Studio. The primary focus however will be on the newer standard HTML5 and Visual Studio 2010XSS Attack: This tool will simulate an attack on your database and update up to 5000 rows in every table and replace your strings in your database with random ...Yazgelistir Beta: Yazgelistir'in beta sitesiNew ReleasesAStar.net: AStar.net 1.0 downloads: AStar.net 1.0 downloadsAvalaible downloads:Astar.net dll - Runtime library ready to be included in a project. Astar.net source project - The Visu...AutoPoco: 0.1 - Initial Release: This is the initial release, changes pending, lots left to do, check it out though!Bag of Tricks: Bag of Tricks - WPF - Libraries and Sample App: Here is a drop of the Bag of Tricks. It targets the 3.5 Client Profile.Boxee Launcher: Boxee Launcher 1.0.1.4: Taskbar will now be hiddenDesignit Umbraco Newsletter Package: ver 1.0.0 beta1: Please remember this is a beta version. If you have any problems or issues, don't hesitate to use the issue tracker and/or forum on this site. Ple...Effect Custom Tool for Visual Studio: Effect Custom Tool for Visual Studio 2008: Effect Custom Tool for Visual Studio is a visual studio 2008 extension that helps you generate c# classes from effect (*.fx) files for use with Xna...Fluent Ribbon Control Suite: Fluent Ribbon Control Suite 1.1: Fluent Ribbon Control Suite 1.1 Includes: Fluent.dll (with .pdb and .xml) Showcase Application Samples Foundation (Tabs, Groups, Contextual Tab...GsGrid: gsgrid 1.6.5: gsgrid 1.6.5Home Access Plus+: v3.2.5.2: v3.2.5.1 Release Change Log: Attempt to fix Domain Admin Lookup box File Changes: ~/bin/CHS Extranet.dll ~/bin/CHS Extranet.pdbHulu Launcher: Hulu Launcher 1.0.1.4: Will now hide taskbar.Icarus Scene Engine: Icarus Professional 2 Alpha 2a v 1.10.404.936: Alpha release 2 of Icarus Professional. This release includes: IcarusX: The ActiveX-based browser control for rendering IPX projects online. Icaru...kdar: KDAR 0.0.19: KDAR - Kernel Debugger Anti Rootkit - thread start notifier routine check added - registry callback сheck added - NDIS6 checks added - some bug i...Mobile Device Browser File: Mobile Device Browser File (2010-04-07): The Mobile Browser Definition File contains definitions for individual mobile devices and browsers. At run time, ASP.NET uses the information in th...MvcContrib: a Codeplex Foundation project: Portable Area Template: Use this Visual Studio 2008 Project template to create new portable areas. Drop this file in your Documents\Visual Studio 2008\Templates\ProjectTe...Office Apps: 0.8.8: new ui for Document.Viewer bug fix'sProtoforma | Tactica Adversa: Skilful 0.3.4.477: RC1ROOT Builder: ROOT Builder 1.41: Simplifies building of ROOT on the windows platform by generating a Visual Studio C make project that will build and run (and debug ROOT). See Inst...SharePoint Accelerators: Search AutoComplete for SharePoint Lists: Search AutoComplete for SharePoint List is a Web Part that allows you to search contents of a SharePoint. Search is interactive and offers you resu...SharePoint Labs: SPLab4002A-FRA-Level100: SPLab4002A-FRA-Level100 This SharePoint Lab will teach you the 2nd best practice you should apply when writing code with the SharePoint API. Lab La...SharePoint Labs: SPLab4003A-FRA-Level100: SPLab4003A-FRA-Level100 This SharePoint Lab will teach you the 3rd best practice you should apply when writing code with the SharePoint API. Lab La...SQL Compact data and schema script utility: Version 3.0: This release contains 4 downloadable files: - SSMS 2008 scripting add-in - SQL Server 2005/2008 command line utility to generate a script with sch...StarMath: Static Array Math Library: StarMath Source Files: The source file package includes the main library StarMath.dll (and it's source files), and an example exe project to invoke commands from StarMath.stefvanhooijdonk.com: Powershell Solution Install Script: Powershell Example script to install a SP2010 Solution, which actually waits for the Retraction and Deployment jobs.TamTam.SharePoint2010.LinkedIn: 0.0.0.1: How to use/install Small instruction to use this code/solution step 1 Add the Farm Solution to your SP2010 installation step 2 Go to the MySite H...usenet-o-matic: V 0.2: supports Newzbin and NZBmatrix as index sources and SABnzbd as download serverVCC: Latest build, v2.1.30406.0: Automatic drop of latest buildVisual Studio DSite: E-Z Image To PDF Converter Beta: This simple little program can convert all common image formats into pdfs and can even encrypt the pdf with an encrpytion key.Web and Load Test Plugins for Visual Studio Team Test: Release 2.0: Release 2.0 is targeted at VS 2010. VS 2010 exposes major new extensibility points: 1) Recorder plugins enable you to do custom correlations and o...Wicked Compression ASP.NET HTTP Module: WickedCompressionModule 4.0 Alpha: New Features, New Enhancements! - Visual Studio 2010 Projects! - Support for ASP.NET 2.0, 3.5, and 4.0 - AJAX Support for ASP.NET 3.5 and 4.0 - Bu...x5s - test encodings and character transformations to find XSS hotspots: x5s v1.0.0 beta: This is the v1.0 beta release of x5s. All feedback welcome in planning for the next release. Make sure Fiddler is installed prior to running th...xvanneste: Silverlight SharePoint: Fichiers du webcast sur silverlight: Silverlight OM Silverlight Webpart Silverlight Embedded ressource Silverlight List ViewYet Another Web App Monitoring Tool (YAWAMT): yawamt v0.5: A new release has seen the light :-) I've lowered the release to version 0.5 but changed some major things: - deletion of URLS works - settings can...Zinc Launcher: Zinc Launcher 1.0.1.1: Taskbar will now be hidden Delay to show Zinc was reduced to improve responsiveness.Most Popular ProjectsRawrWBFS ManagerMicrosoft SQL Server Product Samples: DatabaseASP.NET Ajax LibrarySilverlight ToolkitAJAX Control ToolkitWindows Presentation Foundation (WPF)ASP.NETMicrosoft SQL Server Community & SamplesFacebook Developer ToolkitMost Active ProjectsGraffiti CMSnopCommerce. Open Source online shop e-commerce solution.RawrFacebook Developer ToolkitShweet: SharePoint 2010 Team Messaging built with Pexpatterns & practices – Enterprise LibraryNcqrs Framework - The CQRS framework for .NETjQuery Library for SharePoint Web ServicesIonics Isapi Rewrite FilterAcadsys

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  • 'rman' cheat-sheet and rlwrap completion

    - by katsumii
    I started using 'rlwrap' some monthes ago like one of my colleague does.bash-like features in sqlplus, rman and other Oracle command line tools (Oracle Luxembourg Core Tech' Blog by Gilles Haro)One can find specific Oracle extension for databases 9i, 10g and 11g (keyword textfile) over here. This will avoid you the need to create this .oracle_keywords file.There is 'rman' keyword file in the link above. I experimented a little and found some missing keywords which are:MAXCORRUPTION PRIMARY NOCFAU VIRTUAL COMPRESSION FOREIGN With these words added, 'rman' works like this:$ rlwrap -f ~/rman $ORACLE_HOME/bin/rman Recovery Manager: Release 11.2.0.3.0 - Production on Mon Dec 3 02:56:04 2012 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. RMAN> <-- Hit TAB Display all 211 possibilities? (y or n) As you can guess, this completion is not context aware.I found these missing words by creating a kind of 'cheat sheet' for rman with the script like below. This sheet contains list of verbs and 1st operands. I uploaded to here so one can create a coffee cup with a lot of esoteric words printed on :)validWords() { sed -n 's/^RMAN-01009: syntax error: found "identifier": expecting one of: //p' \ | sed -r 's/double-quoted-string, single-quoted-string/Some String/;s/, /" "/g;s/""//' } echo "Bogus" | rman | validWords > /tmp/rman.$$ for i in $(cat /tmp/rman.$$) do i=$(echo $i | tr -d '"') echo "#### $i ####" echo "$i Bogus" | rman | validWords done One can find more keywords in the document here.

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  • CodePlex Daily Summary for Wednesday, February 23, 2011

    CodePlex Daily Summary for Wednesday, February 23, 2011Popular ReleasesSQL Server CLR Function for Address Correction and Geocoding: Release 2.1: Adds support for the User Key argument in Process function calls.ClosedXML - The easy way to OpenXML: ClosedXML 0.45.2: New on this release: 1) Added data validation. See Data Validation 2) Deleting or clearing cells deletes the hyperlinks too. New on v0.45.1 1) Fixed issues 6237, 6240 New on v0.45.2 1) Fixed issues 6257, 6266 New Examples Data ValidationCrystalbyte Equinox (LINQ to IMAP): Equinox Alpha Release v0.3.0.0: Fixed bugsFixed issue introduced in last release; No connection could be established since the client did not read the welcome message during the initial connection attempt. Contact names are now being properly parsed into the envelope Introduced featuresImplemented SMTP support, the client is contained inside the Crystalbyte.Equinox.Smtp.dll which was added to the current release.OMEGA CMS: OMEGA CMA - Alpha 0.2: A few fixes for OMEGA Framework (DLL) A few tweeks for OMEGA CMSJSLint for Visual Studio 2010: 1.2.4: Bug Fix release.Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.2: New control, Toast Prompt! Removed progress bar since Silverlight Toolkit Feb 2010 has it.Umbraco CMS: Umbraco 4.7: Service release fixing 31 issues. A full changelog will be available with the final stable release of 4.7 Important when upgradingUpgrade as if it was a patch release (update /bin, /umbraco and /umbraco_client). For general upgrade information follow the guide found at http://our.umbraco.org/wiki/install-and-setup/upgrading-an-umbraco-installation 4.7 requires the .NET 4.0 framework Web.Config changes Update the web web.config to include the 4 changes found in (they're clearly marked in...HubbleDotNet - Open source full-text search engine: V1.1.0.0: Add Sqlite3 DBAdapter Add App Report when Query Cache is Collecting. Improve the performance of index through Synchronize. Add top 0 feature so that we can only get count of the result. Improve the score calculating algorithm of match. Let the score of the record that match all items large then others. Add MySql DBAdapter Improve performance for multi-fields sort . Using hash table to access the Payload data. The version before used bin search. Using heap sort instead of qui...Silverlight????[???]: silverlight????[???]2.0: ???????,?????,????????silverlight????。DBSourceTools: DBSourceTools_1.3.0.0: Release 1.3.0.0 Changed editors from FireEdit to ICSharpCode.TextEditor. Complete re-vamp of Intellisense ( further testing needed). Hightlight Field and Table Names in sql scripts. Added field dropdown on all tables and views in DBExplorer. Added data option for viewing data in Tables. Fixed comment / uncomment bug as reported by tareq. Included Synonyms in scripting engine ( nickt_ch ).IronPython: 2.7 Release Candidate 1: We are pleased to announce the first Release Candidate for IronPython 2.7. This release contains over two dozen bugs fixed in preparation for 2.7 Final. See the release notes for 60193 for details and what has already been fixed in the earlier 2.7 prereleases. - IronPython TeamCaliburn Micro: A Micro-Framework for WPF, Silverlight and WP7: Caliburn.Micro 1.0 RC: This is the official Release Candicate for Caliburn.Micro 1.0. The download contains the binaries, samples and VS templates. VS Templates The templates included are designed for situations where the Caliburn.Micro source needs to be embedded within a single project solution. This was targeted at government and other organizations that expressed specific requirements around using an open source project like this. NuGet This release does not have a corresponding NuGet package. The NuGet pack...Caliburn: A Client Framework for WPF and Silverlight: Caliburn 2.0 RC: This is the official Release Candidate for Caliburn 2.0. It contains all binaries, samples and generated code docs.Chiave File Encryption: Chiave 0.9: Application for file encryption and decryption using 512 Bit rijndael encyrption algorithm with simple to use UI. Its written in C# and compiled in .Net version 3.5. It incorporates features of Windows 7 like Jumplists, Taskbar progress and Aero Glass. Feedbacks are Welcome!....Rawr: Rawr 4.0.20 Beta: Rawr is now web-based. The link to use Rawr4 is: http://elitistjerks.com/rawr.phpThis is the Cataclysm Beta Release. More details can be found at the following link http://rawr.codeplex.com/Thread/View.aspx?ThreadId=237262 As of the 4.0.16 release, you can now also begin using the new Downloadable WPF version of Rawr!This is a pre-alpha release of the WPF version, there are likely to be a lot of issues. If you have a problem, please follow the Posting Guidelines and put it into the Issue Trac...PowerGUI Visual Studio Extension: PowerGUI VSX 1.3.2: New FeaturesPowerGUI Console Tool Window PowerShell Project Type PowerGUI 2.4 SupportMiniTwitter: 1.66: MiniTwitter 1.66 ???? ?? ?????????? 2 ??????????????????? User Streams ?????????Windows Phone 7 Isolated Storage Explorer: WP7 Isolated Storage Explorer v1.0 Beta: Current release features:WPF desktop explorer client Visual Studio integrated tool window explorer client (Visual Studio 2010 Professional and above) Supported operations: Refresh (isolated storage information), Add Folder, Add Existing Item, Download File, Delete Folder, Delete File Explorer supports operations running on multiple remote applications at the same time Explorer detects application disconnect (1-2 second delay) Explorer confirms operation completed status Explorer d...Image.Viewer: 2011: First version of 2011Silverlight Toolkit: Silverlight for Windows Phone Toolkit - Feb 2011: Silverlight for Windows Phone Toolkit OverviewSilverlight for Windows Phone Toolkit offers developers additional controls for Windows Phone application development, designed to match the rich user experience of the Windows Phone 7. Suggestions? Features? Questions? Ask questions in the Create.msdn.com forum. Add bugs or feature requests to the Issue Tracker. Help us shape the Silverlight Toolkit with your feedback! Please clearly indicate that the work items and issues are for the phone t...New Projects.Net Dating & Social Software Suite: A free, open source dating and social software suite. Dot Net Dating Suite uses the latest features in .Net combined with experienced developers efforts. This allows us to deliver professional public SEO websites with the support of an enterprise enabled administration suite.AllegroSharp: Biblioteka zapewniajaca obsluge serwisu aukcyjnego Allegro.pl w oparciu o udostepniona publicznie usluge Allegro Web API.asdfasdfasdf: asdfasdfasdfauto: auto siteAWS Monitor: A web app utilizing the Amazon Web Services API with a focus on browsing through and analyzing data graphically, mostly from CloudWatch - the API providing metrics about the usage of all the Amazon Web Services such as EC2 (Cloud Computing) and ELB (Elastic Load Balancing).Calculation of FEM using DirectX Libraries: Calculation of FEM using DirectX LibrariesCART: System CART (Creative Application to Remedy Traffics) poprawi przepustowosc infrastruktury drogowej i plynnosci ruchu pojazdów w aglomeracjach miejskich. Chaining Assertion for MSTest: Chaining Assertion for MSTest. Simpleness Assert Extension Method on Object. This provides only one .cs file.CodeFirst Membership Provider: Custom Membership Provider based on SimpleMembershipProvider using Entity Framework Code-First, intended for use in ASP.NET MVC 3. Thanks to ASP.NET Web Pages team for building a simple membership provider :PFourSquareSharp: Simple OAuth2 Implementation of FourSquare API in .NETHelix Engine: The Helix Engine is an Isometric Rendering Engine for SilverlightLighthouse - Versatile Unit Test Runner for Silverlight: Lighthouse provides you with set of simple but powerful tools to run Silverlight Unit Tests from Command Line, Windows Test Runner Application and from Resharper plugin for Visual Studio.MISCE: Designs for a Minimal Instruction Set Computer for Education along with a simulator/compiler written in Excel. A computer "from first principles" that utilises a minimal instruction set and can be built for demonstration purposes as part of a technology or computing course. Oh My Log: Oh My Log inventorises eventlog files from Windows Servers in a network. Clean and simple sysadmin tool. OSIS Interop Tests: These are the tests created for use by the OSIS working group (http://osis.idcommons.net) to test interoperability features of user-centric solutions during interop events.Program Options: Parse command line optionsSearchable Property Updater for Microsoft Dynamics CRM 2011: Searchable Property Updater makes it easier for Microsoft Dynamics CRM 2011 customizers to bulk change the "Active for advanced find" property of entities attributesSilverlight Bolo: silverlight bolo cloneSimulacia a vizualizacia vlasov: simulacia a vizualizacia vlasov pomocou GPUSmartkernel: Smartkernel:Framework,Example,Platform,Tool,AppSusuCMS: SusuCMSSwimlanes for Scrum: Swimlanes Taskboard for Scrum Team Projects with TFS setup using SfTS (Scrum for Team System) V3 templateteamdoer: These are the actual source codes that power teamdoer.com - a simple collaborative task/project management software apptiencd: Tiencd projectVG Current Item Display Web Part: VG Current Item Display Web Part allows to display current SharePoint item metadata. For example if you put it on to the Web Part page or list item form it will display the custom view of the current item properties. Output is easily customized with XSLT file.Virtual Interactive Shopper: Addin for SeeMe Rehabilitation System. More information about the SeeMe system can be found at http://www.brontesprocessing.com/health/SeeMeVisual Studio Strategy Manager: Provide a way to create code generation strategies and to manage them in Visual Studio 2010. Strategies can interact with Visual Studio events like document events (saved, closed, opened), building event or DSL Tools events (model element created, deleted, modified..).VMarket: <project name>VMarket</project name> <programming language>asp.net</programming language> <project description> VMarket is virtual market systems which allow users to act as seller or buyer and manage their property online </project description>webclerk: webclerk's project based on microsoft techWebTest: Just Test!Work efficiency (WE) ????????: Work efficiency ???????? ????: ???? ????zrift: nothing here, move along

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  • Can I delete libc-bin?

    - by Balazs Szikszay
    Question is simple, I need to know because I cant upgrade/install anything, because it always says I have to uninstall/delete it to continue. It also says dont do it, if I dont know what I am doing. EDIT: szikszay@szikszay-Latitude-E5530-non-vPro:~$ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run ‘apt-get -f install’ to correct these. The following packages have unmet dependencies. ia32-libs-multiarch:i386 : Depends: libqtcore4:i386 but it is not installed Depends: libqtgui4:i386 but it is not installed Depends: libqt4-dbus:i386 but it is not installed Depends: libqt4-network:i386 but it is not installed Depends: libqt4-opengl:i386 but it is not installed Depends: libqt4-qt3support:i386 but it is not installed Depends: libqt4-script:i386 but it is not installed Depends: libqt4-scripttools:i386 but it is not installed Depends: libqt4-sql:i386 but it is not installed Depends: libqt4-svg:i386 but it is not installed Depends: libqt4-test:i386 but it is not installed Depends: libqt4-xml:i386 but it is not installed Depends: libqt4-xmlpatterns:i386 but it is not installed Depends: libcups2:i386 but it is not installed Depends: libcupsimage2:i386 but it is not installed Depends: libcurl3:i386 but it is not installed Depends: libnss3:i386 but it is not installed Depends: libnspr4:i386 but it is not installed Depends: libssl1.0.0:i386 but it is not installed Recommends: libgl1-mesa-glx:i386 but it is not installed Recommends: libgl1-mesa-dri:i386 but it is not installed lib32ffi6 : Depends: libc6-i386 (= 2.4) but it is not installed lib32gcc1 : Depends: libc6-i386 (= 2.5) but it is not installed lib32nss-mdns : Depends: libc6-i386 (= 2.4) but it is not installed lib32stdc++6 : Depends: libc6-i386 (= 2.4) but it is not installed lib32z1 : Depends: libc6-i386 (= 2.4) but it is not installed libacl1:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libattr1:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libaudio2:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libavahi-client3:i386 : Depends: libc6:i386 (= 2.4) but it is not installed Depends: libdbus-1-3:i386 (= 1.1.1) but it is not installed libavahi-common3:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libcomerr2:i386 : Depends: libc6:i386 (= 2.12) but it is not installed libdb5.1:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libdrm-intel1:i386 : Depends: libc6:i386 (= 2.3.4) but it is not installed libdrm-nouveau1a:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libdrm-radeon1:i386 : Depends: libc6:i386 (= 2.3.4) but it is not installed libdrm2:i386 : Depends: libc6:i386 (= 2.7) but it is not installed libffi6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libfontconfig1:i386 : Depends: libc6:i386 (= 2.7) but it is not installed Depends: libexpat1:i386 (= 1.95.8) but it is not installed Depends: libfreetype6:i386 (= 2.2.1) but it is not installed libgcc1:i386 : Depends: libc6:i386 (= 2.2.4) but it is not installed libgcrypt11:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libgdbm3:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libglib2.0-0:i386 : Depends: libc6:i386 (= 2.9) but it is not installed libgpg-error0:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libice6:i386 : Depends: libc6:i386 (= 2.11) but it is not installed libidn11:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libjpeg62:i386 : Depends: libc6:i386 (= 2.7) but it is not installed libkeyutils1:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed liblcms1:i386 : Depends: libc6:i386 (= 2.7) but it is not installed libllvm2.9:i386 : Depends: libc6:i386 (= 2.11) but it is not installed libmng1:i386 : Depends: libc6:i386 (= 2.11) but it is not installed libpciaccess0:i386 : Depends: libc6:i386 (= 2.7) but it is not installed libpcre3:i386 : Depends: libc6:i386 (= 2.4) but it is not installed librtmp0:i386 : Depends: libc6:i386 (= 2.7) but it is not installed Depends: libgnutls26:i386 (= 2.9.11-0) but it is not installed libsasl2-2:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libsasl2-modules:i386 : Depends: libc6:i386 (= 2.4) but it is not installed Depends: libssl1.0.0:i386 (= 1.0.0) but it is not installed libselinux1:i386 : Depends: libc6:i386 (= 2.8) but it is not installed libsm6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libsqlite3-0:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libstdc++6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libuuid1:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libx11-6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libxau6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libxcb1:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libxdamage1:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libxdmcp6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libxext6:i386 : Depends: libc6:i386 (= 2.4) but it is not installed libxfixes3:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libxrender1:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libxss1:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed libxt6:i386 : Depends: libc6:i386 (= 2.7) but it is not installed libxxf86vm1:i386 : Depends: libc6:i386 (= 2.1.3) but it is not installed zlib1g:i386 : Depends: libc6:i386 (= 2.4) but it is not installed E: Unmet dependencies. Try using -f. szikszay@szikszay-Latitude-E5530-non-vPro:~$ sudo apt-get upgrade -f Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED libc-bin The following NEW packages will be installed libc-bin:i386 libc6:i386 libc6-i386 libcups2:i386 libcupsimage2:i386 libcurl3:i386 libdbus-1-3:i386 libexpat1:i386 libfreetype6:i386 libgl1-mesa-dri:i386 libgl1-mesa-glx:i386 libglapi-mesa:i386 libgnutls26:i386 libgssapi-krb5-2:i386 libk5crypto3:i386 libkrb5-3:i386 libkrb5support0:i386 libldap-2.4-2:i386 libnspr4:i386 libnss3:i386 libpng12-0:i386 libqt4-dbus:i386 libqt4-declarative:i386 libqt4-designer:i386 libqt4-network:i386 libqt4-opengl:i386 libqt4-qt3support:i386 libqt4-script:i386 libqt4-scripttools:i386 libqt4-sql:i386 libqt4-svg:i386 libqt4-test:i386 libqt4-xml:i386 libqt4-xmlpatterns:i386 libqtcore4:i386 libqtgui4:i386 libssl1.0.0:i386 libtasn1-3:i386 libtiff4:i386 libxi6:i386 The following packages have been kept back: ginn libgrip0 linux-headers-generic linux-image-generic unity unity-common xserver-xorg-input-evdev xserver-xorg-input-synaptics The following packages will be upgraded: accountsservice acpi-support acpid aisleriot alsa-utils app-install-data-partner apparmor appmenu-qt apport apport-gtk apt apt-transport-https apt-utils aptdaemon aptdaemon-data apturl apturl-common at-spi2-core bamfdaemon banshee banshee-extension-soundmenu banshee-extension-ubuntuonemusicstore baobab bind9-host binutils bluez bluez-alsa bluez-cups bluez-gstreamer brasero brasero-cdrkit brasero-common brltty bzip2 ca-certificates-java checkbox checkbox-gtk colord command-not-found command-not-found-data compiz compiz-core compiz-gnome compiz-plugins-default compiz-plugins-main-default cups cups-bsd cups-client cups-common cups-ppdc dbus dbus-x11 deja-dup desktop-file-utils dnsutils dpkg ecryptfs-utils empathy empathy-common eog evince evince-common evolution-data-server evolution-data-server-common file-roller firefox firefox-globalmenu firefox-gnome-support firefox-locale-en firefox-locale-hu gbrainy gcalctool gconf2 gconf2-common gedit gedit-common ghostscript ghostscript-cups ghostscript-x gir1.2-atspi-2.0 gir1.2-gconf-2.0 gir1.2-gnomebluetooth-1.0 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-totem-1.0 gir1.2-unity-4.0 gir1.2-webkit-3.0 gnome-accessibility-themes gnome-bluetooth gnome-control-center gnome-control-center-data gnome-desktop3-data gnome-font-viewer gnome-games-common gnome-icon-theme gnome-keyring gnome-mahjongg gnome-online-accounts gnome-orca gnome-power-manager gnome-screenshot gnome-search-tool gnome-session gnome-session-bin gnome-session-canberra gnome-session-common gnome-settings-daemon gnome-sudoku gnome-system-log gnome-system-monitor gnome-utils-common gnomine gnupg gpgv grub-common grub-pc grub-pc-bin grub2-common gstreamer0.10-gconf gstreamer0.10-plugins-good gstreamer0.10-pulseaudio gvfs gvfs-backends gvfs-bin gvfs-fuse gwibber gwibber-service gwibber-service-facebook gwibber-service-identica gwibber-service-twitter gzip hpijs hplip hplip-cups hplip-data icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-netx ifupdown im-switch indicator-datetime indicator-session indicator-sound initramfs-tools initramfs-tools-bin initscripts insserv isc-dhcp-client isc-dhcp-common iso-codes jockey-common jockey-gtk language-pack-en language-pack-en-base language-pack-gnome-en language-pack-gnome-en-base language-pack-gnome-hu language-pack-gnome-hu-base language-pack-hu language-pack-hu-base language-selector-common language-selector-gnome libaccountsservice0 libapt-inst1.3 libapt-pkg4.11 libarchive1 libasound2-plugins libatk-adaptor libatspi2.0-0 libbamf0 libbamf3-0 libbind9-60 libbluetooth3 libbrasero-media3-1 libbrlapi0.5 libbz2-1.0 libc-dev-bin libc6 libc6-dev libcamel-1.2-29 libcanberra-gtk-module libcanberra-gtk0 libcanberra-gtk3-0 libcanberra-gtk3-module libcanberra-pulse libcanberra0 libcolord1 libcups2 libcupscgi1 libcupsdriver1 libcupsimage2 libcupsmime1 libcupsppdc1 libcurl3-gnutls libdbus-1-3 libdbus-glib-1-2 libdecoration0 libdns69 libebackend-1.2-1 libebook1.2-12 libecal1.2-10 libecryptfs0 libedata-book-1.2-11 libedata-cal-1.2-13 libedataserver1.2-15 libedataserverui-3.0-1 libevince3-3 libexif12 libexpat1 libfreetype6 libgail-3-0 libgail-3-common libgck-1-0 libgconf2-4 libgcr-3-1 libgdata-common libgdata13 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libglu1-mesa libgnome-bluetooth8 libgnome-control-center1 libgnome-desktop-3-2 libgnutls26 libgoa-1.0-0 libgs9 libgs9-common libgssapi-krb5-2 libgtk-3-0 libgtk-3-bin libgtk-3-common libgtksourceview-3.0-0 libgtksourceview-3.0-common libgudev-1.0-0 libgweather-3-0 libgweather-common libgwibber-gtk2 libgwibber2 libhpmud0 libicu44 libimobiledevice2 libisc62 libisccc60 libisccfg62 libjasper1 libjs-jquery libk5crypto3 libkrb5-3 libkrb5support0 libldap-2.4-2 liblightdm-gobject-1-0 liblwres60 libmetacity-private0 libmission-control-plugins0 libmono-cairo4.0-cil libmono-corlib4.0-cil libmono-csharp4.0-cil libmono-i18n-west4.0-cil libmono-i18n4.0-cil libmono-posix4.0-cil libmono-security4.0-cil libmono-sharpzip4.84-cil libmono-system-configuration4.0-cil libmono-system-core4.0-cil libmono-system-drawing4.0-cil libmono-system-security4.0-cil libmono-system-xml4.0-cil libmono-system4.0-cil libmono-zeroconf1.0-cil libmysqlclient16 libnautilus-extension1 libncurses5 libncursesw5 libnm-glib-vpn1 libnm-glib4 libnm-gtk-common libnm-gtk0 libnm-util2 libnotify0.4-cil libnspr4 libnss3 libnss3-1d libnux-1.0-0 libnux-1.0-common libpam-gnome-keyring libpam-modules libpam-modules-bin libpam-runtime libpam0g libperl5.12 libpng12-0 libpoppler-glib6 libpoppler13 libproxy0 libpulse-mainloop-glib0 libpulse0 libpurple-bin libpurple0 libpython2.7 libqt4-dbus libqt4-declarative libqt4-network libqt4-opengl libqt4-script libqt4-sql libqt4-sql-mysql libqt4-svg libqt4-xml libqt4-xmlpatterns libqtcore4 libqtgui4 libreoffice-base-core libreoffice-calc libreoffice-common libreoffice-core libreoffice-draw libreoffice-emailmerge libreoffice-gnome libreoffice-gtk libreoffice-help-en-gb libreoffice-help-en-us libreoffice-help-hu libreoffice-impress libreoffice-l10n-common libreoffice-l10n-en-gb libreoffice-l10n-en-za libreoffice-l10n-hu libreoffice-math libreoffice-style-human libreoffice-writer libsane-hpaio libsmbclient libsnmp-base libsnmp15 libssl1.0.0 libsyncdaemon-1.0-1 libt1-5 libtasn1-3 libtiff4 libtinfo5 libtotem0 libubuntuone-1.0-1 libubuntuone1.0-cil libudev0 libunity-core-4.0-4 libunity6 libusbmuxd1 libv4l-0 libvorbis0a libvorbisenc2 libvorbisfile3 libwbclient0 libwebkitgtk-1.0-0 libwebkitgtk-1.0-common libwebkitgtk-3.0-0 libwebkitgtk-3.0-common libxi6 libxml2 libxslt1.1 lightdm linux-firmware linux-libc-dev mawk metacity metacity-common mobile-broadband-provider-info modemmanager mono-4.0-gac mono-gac mono-runtime mousetweaks multiarch-support mysql-common nautilus nautilus-data nautilus-sendto-empathy ncurses-base ncurses-bin network-manager network-manager-gnome nux-tools onboard openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openssl perl perl-base perl-modules poppler-utils pulseaudio pulseaudio-esound-compat pulseaudio-module-bluetooth pulseaudio-module-gconf pulseaudio-module-x11 pulseaudio-utils python-apport python-aptdaemon python-aptdaemon-gtk python-aptdaemon.gtk3widgets python-aptdaemon.gtkwidgets python-brlapi python-crypto python-cups python-cupshelpers python-egenix-mxdatetime python-egenix-mxtools python-gobject python-gobject-cairo python-httplib2 python-keyring python-launchpadlib python-libproxy python-libxml2 python-pam python-papyon python-pkg-resources python-problem-report python-pyatspi2 python-software-properties python-ubuntuone-client python-ubuntuone-storageprotocol python-uno python2.7 python2.7-minimal qdbus samba-common samba-common-bin seahorse shotwell simple-scan smbclient sni-qt software-center software-properties-common software-properties-gtk sudo system-config-printer-common system-config-printer-gnome system-config-printer-udev sysv-rc sysvinit-utils telepathy-indicator telepathy-mission-control-5 thunderbird thunderbird-globalmenu thunderbird-gnome-support thunderbird-locale-en thunderbird-locale-en-gb thunderbird-locale-en-us thunderbird-locale-hu tomboy totem totem-common totem-mozilla totem-plugins transmission-common transmission-gtk ttf-opensymbol tzdata tzdata-java ubuntu-desktop ubuntu-docs ubuntu-minimal ubuntu-sso-client ubuntu-standard ubuntuone-client ubuntuone-client-gnome ubuntuone-couch udev unity-lens-applications unity-services uno-libs3 update-manager update-manager-core update-notifier update-notifier-common upstart ure usbmuxd vim-common vim-tiny vinagre vino whois x11-common xdiagnose xorg xserver-common xserver-xorg xserver-xorg-core xserver-xorg-input-all xserver-xorg-video-all xserver-xorg-video-intel xserver-xorg-video-openchrome xserver-xorg-video-qxl xul-ext-ubufox WARNING: The following essential packages will be removed. This should NOT be done unless you know exactly what you are doing! libc-bin 498 upgraded, 40 newly installed, 1 to remove and 8 not upgraded. 69 not fully installed or removed. Need to get 439 MB of archives. After this operation, 135 MB of additional disk space will be used. You are about to do something potentially harmful To continue type in the phrase ‘Yes, do as I say!’ ?] I tried to upgrade but it gives me an error, when i try to upgrade-f it says i should delete libc-bin. Thanks for the answers btw. EDIT2: it also says this: The package system is broken If you are using third party repositories then disable them, since they are a common source of problems. Now run the following command in a terminal: apt-get install -f

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  • Where to find other versions of Opera browser as deb packages?

    - by cipricus
    I used Opera mainly for the Unite feature now to be abandoned. It is missing in v. 12. Some say its features will re-emerge in future extensions etc. Until then, Unite is still accessible in v. 11. Where do I get the v.11 deb? P.S. In fact it seems that opera unite (at least in its older form) is dying while I am editing this question. Access to opera-unite applications from within opera-unite is poor or absent. This issue is obscure to me for now (31.08.2012) because yesterday I have installed v12 in Windows OS (with opera-unite and basic applications - file sharing and media player - already installed) and it is still working (server is working). The v12 Ubuntu version came today without unite, and after installing v11 (which has unite) I could not get applications (file sharing, etc). But they are still available: here and after downloading these files which have te .ua extension, they can be installed by opening them with Opera (v.11) But as opera-unite is no longer supported, it is possible that the server that provides the file sharing etc will soon be unaccessible. Even if that is the case the question should maybe not be closed at it has a general usefulness independently of the unite issue.

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  • .NET Reflector & .NET Reflector Pro 6.1 have been released

    - by Bart Read
    .NET Reflector 6.1 and .NET Reflector Pro 6.1 have been released. You can download them from: http://www.red-gate.com/products/reflector/index.htm .NET Reflector is a class browser and disassembler for .NET assemblies. .NET Reflector Pro is a Visual Studio debugging extension that allows you to step through third party and framework assemblies, as if they were built from your own source code. This release fixes several problems that were present in the 6.0 release: Support for using a copy of Reflector.cfg stored alongside Reflector.exe has been re-enabled so users upgrading from 5.x releases will not lose their settings. Fixed unhandled exception on exit of Visual Studio when .NET Reflector add-in used in conjunction with TestDriven.NET add-in. Added better support for dealing with framework assemblies, which only contain meta-data, in the "Referenced Assemblies" folder. Fixed problem where attempted decompilation with CppCliLanguage add-in would lead to display of a page on the Red Gate website. Added option to activate .NET Reflector Pro to .NET Reflector menu in Visual Studio after receiving feedback from a number of users that it was hard to figure out how to activate the product. For more details about the products please visit: http://www.red-gate.com/products/reflector/index.htm

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  • Nautilus crashes after Ubuntu Tweak Package Cleaner [fixed]

    - by Ka7anax
    Few days ago I started having some problems with nautilus. Basically when I'm trying to get into a folder it crashes. It's not happening all the time, but in 85% it does... Sometimes, after the crash all my desktop icons are also gone. The only thing that I think causes this is Ubuntu Tweak - I'm not sure, but the issues started after I did the Package cleaner from Ubuntu Tweaks... Any ideas? ------- EDIT 2 - IMPORTANT !!! ---------- It seems I fixed this problem doing these: 1) I uninstall this nautilus script - http://mundogeek.net/nautilus-scripts/#nautilus-send-gmail 2) I installed nautilus elementary So far is back to normal... If anything bad happens again I will come back! -------- EDIT 1 ---------- First time, after running the command (nautilus --quit; nautilus --no-desktop) 3 times all the system crashed (except the mouse, I could move the mouse). After restart I run it and obtain this: ----- Initializing nautilus-gdu extension Initializing nautilus-dropbox 0.6.7 (nautilus:2966): GConf-CRITICAL **: gconf_value_free: assertion value != NULL' failed (nautilus:2966): GConf-CRITICAL **: gconf_value_free: assertionvalue != NULL' failed Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory Please ask your system administrator to enable user sharing. and then this: cristi@cris-laptop:~$ nautilus --quit; nautilus --no-desktop (nautilus:3810): Unique-DBus-WARNING **: Error while sending message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

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  • Convertion of tiff image in Python script - OCR using tesseract

    - by PYTHON TEAM
    I want to convert a tiff image file to text document. My code perfectly as I expected to convert tiff images with usual font but its not working for french script font . My tiff image file contains text. The font of text is in french script format.I here is my code import Image import subprocess import util import errors tesseract_exe_name = 'tesseract' # Name of executable to be called at command line scratch_image_name = "temp.bmp" # This file must be .bmp or other Tesseract-compatible format scratch_text_name_root = "temp" # Leave out the .txt extension cleanup_scratch_flag = True # Temporary files cleaned up after OCR operation def call_tesseract(input_filename, output_filename): """Calls external tesseract.exe on input file (restrictions on types), outputting output_filename+'txt'""" args = [tesseract_exe_name, input_filename, output_filename] proc = subprocess.Popen(args) retcode = proc.wait() if retcode!=0: errors.check_for_errors() def image_to_string(im, cleanup = cleanup_scratch_flag): """Converts im to file, applies tesseract, and fetches resulting text. If cleanup=True, delete scratch files after operation.""" try: util.image_to_scratch(im, scratch_image_name) call_tesseract(scratch_image_name, scratch_text_name_root) text = util.retrieve_text(scratch_text_name_root) finally: if cleanup: util.perform_cleanup(scratch_image_name, scratch_text_name_root) return text def image_file_to_string(filename, cleanup = cleanup_scratch_flag, graceful_errors=True): If cleanup=True, delete scratch files after operation.""" try: try: call_tesseract(filename, scratch_text_name_root) text = util.retrieve_text(scratch_text_name_root) except errors.Tesser_General_Exception: if graceful_errors: im = Image.open(filename) text = image_to_string(im, cleanup) else: raise finally: if cleanup: util.perform_cleanup(scratch_image_name, scratch_text_name_root) return text if __name__=='__main__': im = Image.open("/home/oomsys/phototest.tif") text = image_to_string(im) print text try: text = image_file_to_string('fnord.tif', graceful_errors=False) except errors.Tesser_General_Exception, value: print "fnord.tif is incompatible filetype. Try graceful_errors=True" print value text = image_file_to_string('fnord.tif', graceful_errors=True) print "fnord.tif contents:", text text = image_file_to_string('fonts_test.png', graceful_errors=True) print text

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  • HTG Explains: Do Non-Windows Platforms Like Mac, Android, iOS, and Linux Get Viruses?

    - by Chris Hoffman
    Viruses and other types of malware seem largely confined to Windows in the real world. Even on a Windows 8 PC, you can still get infected with malware. But how vulnerable are other operating systems to malware? When we say “viruses,” we’re actually talking about malware in general. There’s more to malware than just viruses, although the word virus is often used to talk about malware in general. Why Are All the Viruses For Windows? Not all of the malware out there is for Windows, but most of it is. We’ve tried to cover why Windows has the most viruses in the past. Windows’ popularity is definitely a big factor, but there are other reasons, too. Historically, Windows was never designed for security in the way that UNIX-like platforms were — and every popular operating system that’s not Windows is based on UNIX. Windows also has a culture of installing software by searching the web and downloading it from websites, whereas other platforms have app stores and Linux has centralized software installation from a secure source in the form of its package managers. Do Macs Get Viruses? The vast majority of malware is designed for Windows systems and Macs don’t get Windows malware. While Mac malware is much more rare, Macs are definitely not immune to malware. They can be infected by malware written specifically for Macs, and such malware does exist. At one point, over 650,000 Macs were infected with the Flashback Trojan. [Source] It infected Macs through the Java browser plugin, which is a security nightmare on every platform. Macs no longer include Java by default. Apple also has locked down Macs in other ways. Three things in particular help: Mac App Store: Rather than getting desktop programs from the web and possibly downloading malware, as inexperienced users might on Windows, they can get their applications from a secure place. It’s similar to a smartphone app store or even a Linux package manager. Gatekeeper: Current releases of Mac OS X use Gatekeeper, which only allows programs to run if they’re signed by an approved developer or if they’re from the Mac App Store. This can be disabled by geeks who need to run unsigned software, but it acts as additional protection for typical users. XProtect: Macs also have a built-in technology known as XProtect, or File Quarantine. This feature acts as a blacklist, preventing known-malicious programs from running. It functions similarly to Windows antivirus programs, but works in the background and checks applications you download. Mac malware isn’t coming out nearly as quick as Windows malware, so it’s easier for Apple to keep up. Macs are certainly not immune to all malware, and someone going out of their way to download pirated applications and disable security features may find themselves infected. But Macs are much less at risk of malware in the real world. Android is Vulnerable to Malware, Right? Android malware does exist and companies that produce Android security software would love to sell you their Android antivirus apps. But that isn’t the full picture. By default, Android devices are configured to only install apps from Google Play. They also benefit from antimalware scanning — Google Play itself scans apps for malware. You could disable this protection and go outside Google Play, getting apps from elsewhere (“sideloading”). Google will still help you if you do this, asking if you want to scan your sideloaded apps for malware when you try to install them. In China, where many, many Android devices are in use, there is no Google Play Store. Chinese Android users don’t benefit from Google’s antimalware scanning and have to get their apps from third-party app stores, which may contain infected copies of apps. The majority of Android malware comes from outside Google Play. The scary malware statistics you see primarily include users who get apps from outside Google Play, whether it’s pirating infected apps or acquiring them from untrustworthy app stores. As long as you get your apps from Google Play — or even another secure source, like the Amazon App Store — your Android phone or tablet should be secure. What About iPads and iPhones? Apple’s iOS operating system, used on its iPads, iPhones, and iPod Touches, is more locked down than even Macs and Android devices. iPad and iPhone users are forced to get their apps from Apple’s App Store. Apple is more demanding of developers than Google is — while anyone can upload an app to Google Play and have it available instantly while Google does some automated scanning, getting an app onto Apple’s App Store involves a manual review of that app by an Apple employee. The locked-down environment makes it much more difficult for malware to exist. Even if a malicious application could be installed, it wouldn’t be able to monitor what you typed into your browser and capture your online-banking information without exploiting a deeper system vulnerability. Of course, iOS devices aren’t perfect either. Researchers have proven it’s possible to create malicious apps and sneak them past the app store review process. [Source] However, if a malicious app was discovered, Apple could pull it from the store and immediately uninstall it from all devices. Google and Microsoft have this same ability with Android’s Google Play and Windows Store for new Windows 8-style apps. Does Linux Get Viruses? Malware authors don’t tend to target Linux desktops, as so few average users use them. Linux desktop users are more likely to be geeks that won’t fall for obvious tricks. As with Macs, Linux users get most of their programs from a single place — the package manager — rather than downloading them from websites. Linux also can’t run Windows software natively, so Windows viruses just can’t run. Linux desktop malware is extremely rare, but it does exist. The recent “Hand of Thief” Trojan supports a variety of Linux distributions and desktop environments, running in the background and stealing online banking information. It doesn’t have a good way if infecting Linux systems, though — you’d have to download it from a website or receive it as an email attachment and run the Trojan. [Source] This just confirms how important it is to only run trusted software on any platform, even supposedly secure ones. What About Chromebooks? Chromebooks are locked down laptops that only run the Chrome web browser and some bits around it. We’re not really aware of any form of Chrome OS malware. A Chromebook’s sandbox helps protect it against malware, but it also helps that Chromebooks aren’t very common yet. It would still be possible to infect a Chromebook, if only by tricking a user into installing a malicious browser extension from outside the Chrome web store. The malicious browser extension could run in the background, steal your passwords and online banking credentials, and send it over the web. Such malware could even run on Windows, Mac, and Linux versions of Chrome, but it would appear in the Extensions list, would require the appropriate permissions, and you’d have to agree to install it manually. And Windows RT? Microsoft’s Windows RT only runs desktop programs written by Microsoft. Users can only install “Windows 8-style apps” from the Windows Store. This means that Windows RT devices are as locked down as an iPad — an attacker would have to get a malicious app into the store and trick users into installing it or possibly find a security vulnerability that allowed them to bypass the protection. Malware is definitely at its worst on Windows. This would probably be true even if Windows had a shining security record and a history of being as secure as other operating systems, but you can definitely avoid a lot of malware just by not using Windows. Of course, no platform is a perfect malware-free environment. You should exercise some basic precautions everywhere. Even if malware was eliminated, we’d have to deal with social-engineering attacks like phishing emails asking for credit card numbers. Image Credit: stuartpilbrow on Flickr, Kansir on Flickr     

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  • Teaching high school kids ASP.NET programming

    - by dotneteer
    During the 2011 Microsoft MVP Global Summit, I have been talking to people about teaching kids ASP.NET programming. I want to work with volunteer organizations to provide kids volunteer opportunities while learning technical skills that can be applied elsewhere. The goal is to teach motivated kids enough skill to be productive with no more than 6 hours of instruction. Based on my prior teaching experience of college extension courses and involvement with high school math and science competitions, I think this is quite doable with classic ASP but a challenge with ASP.NET. I don’t want to use ASP because it does not provide a good path into the future. After some considerations, I think this is possible with ASP.NET and here are my thoughts: · Create a framework within ASP.NET for kids programming. · Use existing editor. No extra compiler and intelligence work needed. · Using a subset of C# like a scripting language. Teaches data type, expression, statements, if/for/while/switch blocks and functions. Use existing classes but no class creation and OOP. · Linear rendering model. No complicated life cycle. · Bare-metal html with some MVC style helpers for widget creation; ASP.NET control is optional. I want to teach kids to understand something and avoid black boxes as much as possible. · Use SQL for CRUD with a helper class. Again, I want to teach understanding rather than black boxes. · Provide a template to encourage clean separation of concern. · Provide a conversion utility to convert the code that uses template to ASP.NET MVC. This will allow kids with AP Computer Science knowledge to step up to ASP.NET MVC. Let me know if you have thoughts or can help.

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