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• Can GhostScript run in Medium Trust

  - by SkippyFire

  I am using GhostScript to generate some thumbnails of PDF pages in an ASP.NET application. I have it wrapped in this library called GhostScriptSharp that just uses DllImport to call methods in the GhostScript DLL. It looks like this wont work on a medium trust hosting environment, either because of the fact that it is calling unmanaged code, or that it looks like the library is creating files all over the place (outside my virtual directory). I ran Process Monitor and saw it trying to Read, QueryNameInformationFile, CreateFile and QueryStandardInformationFile in places like: C:\WINDOWS\system32\Halftone\Default or C:\gs\gs8.63\lib\Halftone\Default or C:\gs\font\Halftone\Default Any ideas about whether this is "fixable" to run in medium trust? If I can't use GhostScript, is there another free/open source library that WILL work in Medium trust?

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• How to Redirect Visual Studio F12 Shortcut Key to Object Browser in C# Project

  - by AMissico

  For C# projects, I would like to have the F12 "Go to Definition" shortcut key to open the Object Browser and select the type under the cursor position. This is the behavior for VB.NET projects, which I really like. I think the Object Browser is more helpful than IntelliSense in some cases. I really do not need a text representation of the metadata. How do I duplicate the F12 / "Go to Definition" functionality in a C# project? Is there a different shortcut key for C#? I am not talking about the Alt+Ctrl+J shortcut key that displays the Object Browser.

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• Microsoft Visual Studio SDK DSL Tools - Any serious takers?

  - by amazedsaint

  We are considering Microsoft DSL toolkit for creating some abstract designers. I already did some POCs, but would like to get some opinions on the same. Any one here to share their experiences working with Microsoft DSL Toolkit and T4? Also, any pointers to open source DSL projects will help - Eg. Microsoft Service Factory modeling edition is heavily relying on DSL toolkit. As OSLO/Quadrant will take some time to get released, I think the only option we have is to rely on Microsoft DSL designer. (See Kieth's blog on the same) Also, here is some information I already have on DSL: 1 - A Nice Lab in MSDN on DSL tools 2 - A List of Projects in Codeplex using DSL toolkit

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• Apache </Location> Errors

  - by Eddie

  Hi there! I am having real trouble with this installation - Basically this is the erro that I am getting: apache2: Syntax error on line 234 of /etc/apache2/apache2.conf: Syntax error on line 10 of /etc/apache2/conf.d/amberdms-bs.conf: Expected </Location\xc2\xa0/billing_system> but saw </Location> and this is the code that is being used in that modules file: #  # Amberdms Billing System is an open source accounting, service billing and time keeping web application.  #  Alias /billing_system /usr/share/amberdms/billing_system  <Location /billing_system>  Order deny,allow  Allow from all  AllowOverride all    Please help me! I need this software to be installed, but this error has stumped me.

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• Java apache poi setting the cell formula

  - by Ray

  I am try to set a cell formulat that references cells from other workbooks. However, when I open the programmatically generated workbook, the formula cells show up as #REF!. I print out the formulas that were generated in a log. If I cut and paste those into the cells, the numbers from the external workbooks is pulled in. String formula = "'C:\\tmp\\ForecastAggregate\\Total Products\\[ForecastWorksheet.xls]2010 Budget'!C10"; HSSFCell cell = row.createCell(0); //row was created above cell.setCellFormula(formula); Can anybode help?

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• Excel and Tab Delimited Files Question

  - by OneNerd

  I am encountering what I believe to be a strange issue with Excel (in this case, Excel 2007, but maybe also Excel 2003, but don't have access to it as I write this). I can reliably convert some server data over into a tab-delimited format (been doing this for years) and then open it using Excel - no issue. However, what seems to be happening is if I have an html <table inside one of the fields, it looks like Excel 2007 thinks it should be converting the table into rows and columns inside Excel (not what I want). As you might imagine, this throws off the entire spreadsheet. So question is, is there any way to set up excel to NOT do this (perhaps some setting in Excel that pertains to reading tab delimited files), or am I missing something? Thanks.

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• how to run an ActiveX that must be visible and topmost on a server without a desktop?

  - by DanJ

  We're writing a server application that needs to use an ActiveX object that must be visible and Top-Most otherwise it doesn't render correctly. The challenge is that servers typically don't have an active desktop, and therefore the applications should not require one. Ours does. I must use this ActiveX, and I don't have access to the source code. When running from within remote-desktop everything works fine as long as the session is open. As soon as the session closes it stops working. I'm guessing this is because there is no desktop. Any ideas how I can work this out in a secure and robust way?

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• Using named pipes in Rails

  - by FancyDancy

  I need to read and write some data through named pipes. I have tested it in a simple Ruby app, and it works nice. But I dont know, where should i put it in my Rails app? I have heard about Rake tasks, but i don't sure, is it right solution. I need to open a pipe-file, and listen to data. If there is any, i need to process it and make a DB-query. Then, write some data to another pipe. I know, how it works, but the only problem - how to run it with Rails? Give me some examples, please.

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• wampserver installation

  - by Diego

  Hi. I'm trying to install wampserver on my windows xp pc. It is throwing this error: C:\wamp\wampmanager.exe An error occurred while trying to rename a file in the destination directory: MoveFile failed; code 2. El sistema no puede hallar el archivo especificado. Click Retry to try again, Ignore to skip this file (not recommended), or Abort to cancel installation. First time on this error I tried to retry but it threw the error again and again. If I decide to ignore, then the installation finishes and all the files are correct but the exe to open wampserver. I tried to copy from one pc to other and I couldn't event paste it in the destination folder. Please healp me. Sorry for my bad english and thank you in advance

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• All about WSDL vs MEX?

  - by Aakash

  I am not able to open the meta data url - http://localhost:8082/Tasks/mex I have added the mexhttpBinding in the config file. Can I see this mex endpoint in browser? The config files look like: <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> Questions: Is Mex is differ from WSDL? If no, why do we require MEX endpoing over WSDL? In the WSDL, I see the WSDL types information missing. Is it by default? Can I look at the type information in WSDL? Thanks in advance.

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• Does IsolatedStorageFileStream.Lock work under SIlverlight4?

  - by Noah

  Silverlight uses an IsolatedStorageFileStream to open files. The IsolatedStorageFileStreamunder NET.4 claims to support the Lock Method (Inherited from FileStream) The following code IsolatedStorageFile isf; IsolatedStorageFileStream lockStream = new IsolatedStorageFileStream( "my.lck", FileMode.OpenOrCreate, isf ); lockStream.Lock( 0, 0 ); generates the following error, wrapped for readability, under VS2010 and Silverlight 4 'System.IO.IsolatedStorage.IsolatedStorageFileStream' does not contain a definition for 'Lock' and no extension method 'Lock' accepting a first argument of type 'System.IO.IsolatedStorage.IsolatedStorageFileStream' could be found (are you missing a using directive or an assembly reference?)

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• update table using cursor but also update records in another table

  - by Bucket

  I'm updating the IDs with new IDs, but I need to retain the same ID for the master record in table A and its dependents in table B. The chunk bracketed by comments is the part I can't figure out. I need to update all the records in table B that share the same ID with the current record I'm looking at for table A. DECLARE CURSOR_A CURSOR FOR SELECT * FROM TABLE_A FOR UPDATE OPEN CURSOR_A FETCH NEXT FROM CURSOR_A WHILE @@FETCH_STATUS = 0 BEGIN BEGIN TRANSACTION UPDATE KEYMASTERTABLE SET RUNNING_NUMBER=RUNNING_NUMBER+1 WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID' -- FOLLOWING CHUNK IS WRONG!!! UPDATE TABLE_B SET TABLE_B_ID=(SELECT RUNNING_NUMBER FROM KEYMASTERTABLE WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID') WHERE TABLE_B_ID = (SELECT TABLE_A_ID FROM CURRENT OF CURSOR A) -- END OF BAD CHUNK UPDATE TABLE_A SET TABLE_A_ID=(SELECT RUNNING_NUMBER FROM KEYMASTERTABLE WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID') WHERE CURRENT OF CURSOR_A COMMIT FETCH NEXT FROM CURSOR_A END CLOSE CURSOR_A DEALLOCATE CURSOR_A GO

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• Network programming and Packets interactions.

  - by Eyla

  Greeting, This month I will start working on my master thesis. My thesis's subject is about network security. I need to deal with network interfaces and packets. I've used shappcap before to interact with packets but I'm not sure if C# is the most powerful language to deal with network programing and packets. I worked a bit with winshark and I saw how powerful it is and as you know winsharp is open source developed using C++. I'm not sure if I should use C# or C++ for network security programming and I want your through about the best language might be for network programming and packets interaction. should I use C#, C++, or java or some thing else? please give me your advice. Thank you,

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• Only run selenium test if previous selenium test fails

  - by Mike Grace

  I have several 'it' blocks in my selenium test file (using Ruby and rspec) that test various portions of my web application. Each 'it' block stops executing and goes to the next 'it' block if any of the conditions or code fails. Is there a way to run an 'it' block only if the previous fails or call a function to react to the failed test? Is there a better way to accomplish what I am wanting to do that doesn't involve an 'it' block? Example 'it' block it "should load example.com" do page.open("http://example.com") page.wait_for_page_to_load(25) end

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• Flex3 / Air 2: NativeProcess doesn't accepts standard input data (Error #2044 & #3218)

  - by Edward

  Hi: I'm trying to open cmd.exe on a new process and pass some code to programatically eject a device; but when trying to do this all I get is: "Error #2044: Unhandled IOErrorEvent:. text=Error #3218: Error while writing data to NativeProcess.standardInput." Here's my code: private var NP:NativeProcess = new NativeProcess(); private function EjectDevice():void { var RunDLL:File = new File("C:\\Windows\\System32\\cmd.exe"); var NPI:NativeProcessStartupInfo = new NativeProcessStartupInfo(); NPI.executable = RunDLL; NP.start(NPI); NP.addEventListener(Event.STANDARD_OUTPUT_CLOSE, CatchOutput, false, 0, true); NP.standardInput.writeUTFBytes("start C:\\Windows\\System32\\rundll32.exe shell32.dll,Control_RunDLL hotplug.dll"); NP.closeInput(); } I also tried with writeUTF instead of writeUTFBytes, but I still get the error. Does anyone have an idea of what I'm doing wrong?. Thanks for your time :) Edward.

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• Storing user info in Session using an Object vs. normal variables

  - by justinl

  I'm in the process of implementing a user authentication system for my website. I'm using an open source library that maintains user information by creating a User object and storing that object inside my php SESSION variable. Is this the best way to store and access that information? I find it a bit of a hassle to access the user variables because I have to create an object to access them first: $userObj = $_SESSION['userObject']; $userObj->userId; instead of just accessing the user id like this how I would usually store the user ID: $_SESSION['userId']; Is there an advantage to storing a bunch of user data as an object instead of just storing them as individual SESSION variables? ps - The library also seems to store a handful of variables inside the user object (id, username, date joined, email, last user db query) but I really don't care to have all that information stored in my session. I only really want to keep the user id and username.

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• Enumerating .NET assembly resources at runtime

  - by Alex_P

  I have a resource assembly with image files in it that are built using Resource or Content build action. This makes these files accessible using the Uris. However I cannot find the way to enumerate such resources. If I set the build action to Embedded Resource it becomes possible to enumerate the files with the following code: string[] resources = Assembly.GetExecutingAssembly().GetManifestResourceNames(); but it in turn makes these files inaccessible using Uris. The question is - how to enumerate resources that are compiled with either Resource or Content build action? NOTE: As Thomas Levesque pointed out it is possible to enumerate such resources by leveraging the AssemblyAssociatedContentFileAttribute, but it seems to only work for WPF Application assemblies and not for class library ones. So the question is still open.

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• Help solving a error in openGL

  - by peiska

  Hi, I am making a group work in openGL, and when i try to open the file that my partner gave me i have this error: -------------- Build: Debug in CG --------------- Linking console executable: bin/Debug/CG ld: library not found for -lGL collect2: ld returned 1 exit status Process terminated with status 1 (0 minutes, 0 seconds) 0 errors, 0 warnings I've seen the same code working in his computer. Is it cause he is working in Windows? and i am working in MacOSX? I am using CodeBlocks IDE. Can anyone help me solving this?

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• A good web 'desktop' JavaScript, CSS, or both, library that likes ASP.NET Web Forms

  - by ProfK

  I've come across, in passing, several suites of functions, widgets, frameworks, etc. that seek to produce a desktop like experience on the web. Most are JavaScript and CSS tools that handle web content on an emulation of the desktop-paradigmed UI, e.g. TreeView + Content == Explorer. Is there such a library nicely compatible with ASP.NET Forms without weeks of grief? I'll also settle for something similar, but instead of native ASP.NET, a library for any of the open source CMS products for ASP.NET. (Umbraco is at the top of my list, followed by mojoPortal. I aspire to the level of coding their creators easily demonstrate in the product. [PS, I don't want a 'desktop' ux per se, just light and simple dynamic layout for drag 'n drop, dock windows, a dock bar?.. and other fancy magic.

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• Convert Microsoft Visio Drawing (vsd) to PDF automatically

  - by nhinkle

  An open-source project I am working on uses Visio drawings for documentation, which are checked into source control. For those working on the project who don't own Visio, we have been converting the vsd files to PDFs so that they can still view them. It's not too difficult to save a copy as a PDF when making changes to the documentation, but we would like an automated way to do this conversion, so that we can set it up as a pre-checkin script in the SVN client. If anybody knows of a way to do this, either using something built-in to Visio, or with an outside script or command line tool, we would appreciate it. Edit: Thanks to the suggestion below, I have found the Visio Viewer 2010. This will be helpful for our contributors using Windows. We would still like to have the ability to create PDFs though, as there are readers available on every major operating system, and our contributors will not be using only Windows.

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• WCF Service worker thread communicate with ServiceHost thread

  - by Brent

  I have a windows NT Service that opens a ServiceHost object. The service host context is per-session so for each client a new worker thread is created. What I am trying to do is have each worker thread make calls to the thread that started the service host. The NT Service needs to open a VPN connection and poll information from a device on the remote network. The information is stored in a SQL database for the worker threads to read. I only want to poll the device if there is a client connected, which will reduce network trafic. I would like the worker threads to tell the service host thread that they are requesting information and start the polling and updating the database. Everything is working if the device is alway being polled and the database being updated.

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• Spring GAE/J Could Not find API version error

  - by Julie Paltrow

  Hello, I am trying to use Spring MVC 3 on GAE/J and I got this error and I do not know what it means, does anybody have an idea and perhaps give me pointers on how to fix this? May 21, 2010 9:50:23 AM com.google.appengine.tools.info.LocalVersionFactory getVersion INFO: Could not find API version from /opt/home/me/workspace/SpringMVC/war/WEB-INF/lib/.svn java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:114) at java.util.jar.JarFile.<init>(JarFile.java:133) at java.util.jar.JarFile.<init>(JarFile.java:97) at com.google.appengine.tools.util.ApiVersionFinder.findApiVersion(ApiVersionFinder.java:37) at com.google.appengine.tools.info.LocalVersionFactory.getVersion(LocalVersionFactory.java:65) at com.google.appengine.tools.info.UpdateCheck.getLocalVersion(UpdateCheck.java:112) at com.google.appengine.tools.info.UpdateCheck.checkForUpdates(UpdateCheck.java:91) at com.google.appengine.tools.info.UpdateCheck.doNagScreen(UpdateCheck.java:164) at com.google.appengine.tools.info.UpdateCheck.maybePrintNagScreen(UpdateCheck.java:132) at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:150) at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)

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• How to access WebMethods in ASP.NET

  - by Quandary

  When i define an AJAX WebMethod like this in an ASPX page (ui.aspx): [System.Web.Services.WebMethod(Description = "Get Import Progress-Report")] [System.Web.Script.Services.ScriptMethod(UseHttpGet = false, ResponseFormat = System.Web.Script.Services.ResponseFormat.Json)] public static string GetProgress() { System.Web.Script.Serialization.JavaScriptSerializer JSONserializer = new System.Web.Script.Serialization.JavaScriptSerializer(); return JSONserializer.Serialize("an Object/Instance here"); } // End WebMethod-Function GetProgress Can I access the description for the corresponding service somewhere ? E.g. when I want to call the webmethod with my own JavaScript, how do I do that ? I investigated the axd files, and found the xmlhttprequest to open ui.aspx/GetProgress But when I type the address in my browser, I get redirected to ui.aspx

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• Max TCP Connections to a machine

  - by A9S6

  I am creating a Windows Service in .NET to which N number of client can connect. The service starts a TCP listener and accepts the client connections. The problem I am facing is that I can only open 10 connections to this service. The listener::AcceptTcpClient() method accepts only 10 connection and throws an exception for 11th one. The client application uses the System.Net.Sockets.TcpClient class and the service is using System.Net.Sockets.TcpListener class. This is the exception that I am getting when I try to make a number of connections in a for loop to this service (after the 10th connection is made): "Unable to read data from Transport connection: An exsting connection was forcibly closed by remote host"

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• How to create my own recommendation engine?

  - by Burak Dede

  i am intrested in recommendation engines these days and i wanna improve myself in this area.I am currently reading Programming Collective Intelligence (i think this is the best book about this subject) from OReilly (just started).But i dont have any ideas how to implement engine(what i mean by no idea dont know how to start).Lets say i have project like LastFM in my mind where do (should be implemented on database side or backend side)i start creating recommnedation engine? what level database knowledge will needed? is there any open source ones that can be used for help or any resource? what should be the first steps that i have to do?

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