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Articles indexed Tuesday March 30 2010

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  • Binding the position and size of a UserControl inside a Canvas in WPF

    - by John
    Hi. We have dynamically created (i.e. during runtime, via code-behind) UserControls inside a Canvas. We want to bind the position (Canvas.Left and Canvas.Top) and width of those sizable and draggable UserControls to a ObservableCollection<. How would we achieve this if the Usercontrol is contained in a DataTemplate which in turn is used by a ListBox whose DataContext is set to the collection we want to bind to? In other words, how do we bind a control's position and size that doesn't exist in XAML, but in code only (because it's created by clicking and dragging the mouse)? Notice that the collection can be empty or not empty, meaning that the size and position stores in a collection item must be correctly bound to so that the UserControl can be sized and positioned correctly in the Canvas - via DataBinding. Is this possible?

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  • Help organising controllers logically

    - by kenny99
    Hi guys, I'm working on a site which i'm developing using an MVC structure. My models will represent all of data in the site, but i'm struggling a bit to decide on a good controller structure. The site will allow users to login/register and see personal data on a number of pages, but also still have access to public pages, e.g FAQs, Contact page etc. This is what I have at the moment... A Template Controller which handles main template display. The basic template for the site will remain the same whether or not you are logged in. A main Website Controller which extends the Template Controller and handles basic authentication. If the user is logged in, a User::control_panel() method is called from the constructor and this builds the control panel which will be present throughout the authenticated session. If user is not logged in, then a different view is loaded instead of the control panel, e.g with a login form. All protected/public page related controllers will extend the website controller. The user homepage has a number of widgets I want to display, which I'm doing via a Home Controller which extends the Website Controller. This controller generates these widgets via the following static calls: $this->template->content->featured_pet = Pet::featured(); $this->template->content->popular_names = Pet::most_popular(); $this->template->content->owner_map = User::generate_map(); $this->template->content->news = News::snippet(); I suppose the first thing I'm unsure about is if the above static calls to controllers (e.g Pet and User) are ok to remain static - these static methods will return views which are loaded into the main template. This is the way I've done things in the past but I'm curious to find out if this is a sensible approach. Other protected pages for signed in users will be similar to the Home Controller. Static pages will be handled by a Page Controller which will also extend the Website Controller, so that it will know whether or not the user control panel or login form should be shown on the left hand side of the template. The protected member only pages will not be routed to the Page Controller, this controller will only handle publicly available pages. One problem I have at the moment, is that if both public and protected pages extend the Website Controller, how do I avoid an infinite loop - for example, the idea is that the website controller should handle authentication then redirect to the requested controller (URL), but this will cause an infinite redirect loop, so i need to come up with a better way of dealing with this. All in all, does this setup make any sense?! Grateful for any feedback.

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  • Searching global catalog

    - by Will I Am
    If I do a query (I plan to use SDS.P) against the global catalog, what should the starting path be so I can search the entire GC? I want to enumerate all users in GC, for example. Let's say my gc has users for 3 domains (one parent, two children): TEST.COM ONE.TEST.COM TWO.TEST.COM and i'm on a computer in ONE.TEST.COM. I do not want to hardcode DC=XXX,DC=yyy, I would like to determine that at runtime. TIA! -Will

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  • .vcf file not opening

    - by Neal
    I am trying to create a .vcf file programmatically in C#, and writing a bunch of strings in the correct format in that file. But when i try to open it manually, the following message appears. Could not start Microsoft Outlook.The file maynot exist, you may not have permission to open it, or it may be open in another program. Any help!!!

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  • Is there a goto statement in java?

    - by Venkats
    I'm confused about this. Most of us have been told that there is no goto statement in Java. But I found that it is one of the keyword in Java. Where can it be used? If it can not be used, then why was it included in Java as a keyword?

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  • Setting pointers to structs

    - by Bobby
    I have the following struct: struct Datastore_T { Partition_Datastores_T cmtDatastores; // bytes 0 to 499 Partition_Datastores_T cdhDatastores; // bytes 500 to 999 Partition_Datastores_T gncDatastores; // bytes 1000 to 1499 Partition_Datastores_T inpDatastores; // bytes 1500 1999 Partition_Datastores_T outDatastores; // bytes 2000 to 2499 Partition_Datastores_T tmlDatastores; // bytes 2500 to 2999 Partition_Datastores_T sm_Datastores; // bytes 3000 to 3499 }; I want to set a char* to struct of this type like so: struct Datastore_T datastores; // Elided: datastores is initialized with data here char* DatastoreStartAddr = (char*)&datastores; memset(DatastoreStartAddr, 0, 3500); The problem I have is that DatastoreStartAddr always has a value of zero when it should point to the struct that has been initialized with data. What am I doing wrong?

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  • Really want to know how to set bg image to GtkEventBox.

    - by PP
    I want to set background image to GtkEventBox using style/rc file. The reason i want to do this, I want to put some widgets in that event box so that they will be displayed with the background. I am using GTk+ and C. ptomato: I know previously I had posted same question but there was not satisfactory answer so please don't prompt for that.

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  • Filter a form using a command button on another form

    - by Shaun
    I have a form with a cmdbutton that at the moment opens another form and shows all records for several types of PartitionStyles and TrimFinishs (486 at present), I need to be able to filter the second form to show only the TrimFinish I need. Private Sub lbl600SeriesS_Click() Dim stDocName As String Dim stLinkCriteria As String stDocName = "frmModules" stLinkCriteria = "Forms!frmModules![TrimFinish] = 1" DoCmd.OpenForm stDocName, , , stLinkCriteria End Sub At the moment it shows only a new record, I know there should be 162 records using 1, what have I missed or done incorrect.

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  • CSS: Parent-Div does not grow with it's children (horizontal)

    - by vyden_st
    I would like the parent-div (red) to grow with the green child-div. Now it just stops at the viewport. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html lang="de" xmlns="http://www.w3.org/1999/xhtml" xml:lang="de"> <head> <title>simple document</title> <style type="text/css"> * { font-family: verdana; margin: 0px; padding: 0px; } </style> </head> <body> <div style="margin: 30px; background: red; padding: 10px;"> <div style="background: green; width: 2000px;">dxyf</div> </div> </body> </html> I don't want to use display:table; since it does not work well in IE. Any ideas?

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  • Implementing RSA-SHA1 signature algorithm in Java (creating a private key for use with OAuth RSA-SHA

    - by The Elite Gentleman
    Hi everyone, As you know, OAuth can support RSA-SHA1 Signature. I have an OAuthSignature interface that has the following method public String sign(String data, String consumerSecret, String tokenSecret) throws GeneralSecurityException; I successfully implemented and tested HMAC-SHA1 Signature (which OAuth Supports) as well as the PLAINTEXT "signature". I have searched google and I have to create a private key if I need to use SHA1withRSA signature: Sample code: /** * Signs the data with the given key and the provided algorithm. */ private static byte[] sign(PrivateKey key, String data) throws GeneralSecurityException { Signature signature = Signature.getInstance("SHA1withRSA"); signature.initSign(key); signature.update(data.getBytes()); return signature.sign(); } Now, How can I take the OAuth key (which is key = consumerSecret&tokenSecret) and create a PrivateKey to use with SHA1withRSA signature? Thanks

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  • Java UTF-8 to ASCII conversion with supplements

    - by bozo
    Hi, we are accepting all sorts of national characters in UTF-8 string on the input, and we need to convert them to ASCII string on the output for some legacy use. (we don't accept Chinese and Japanese chars, only European languages) We have a small utility to get rid of all the diacritics: public static final String toBaseCharacters(final String sText) { if (sText == null || sText.length() == 0) return sText; final char[] chars = sText.toCharArray(); final int iSize = chars.length; final StringBuilder sb = new StringBuilder(iSize); for (int i = 0; i < iSize; i++) { String sLetter = new String(new char[] { chars[i] }); sLetter = Normalizer.normalize(sLetter, Normalizer.Form.NFC); try { byte[] bLetter = sLetter.getBytes("UTF-8"); sb.append((char) bLetter[0]); } catch (UnsupportedEncodingException e) { } } return sb.toString(); } The question is how to replace all the german sharp s (ß, Ð, d) and other characters that get through the above normalization method, with their supplements (in case of ß, supplement would probably be "ss" and in case od Ð supplement would be either "D" or "Dj"). Is there some simple way to do it, without million of .replaceAll() calls? So for example: Ðonardan = Djonardan, Blaß = Blass and so on. We can replace all "problematic" chars with empty space, but would like to avoid this to make the output as similar to the input as possible. Thank you for your answers, Bozo

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  • Scheduled task with windows services and system.timer.timer

    - by nccsbim071
    Hi i want implement a windows services scheduled task. I already created windows service. In a service i have implemented a timer.The timer is initialized at class interval. The timers interval is set in the start method of service and also it is enabled in the start method of the service. After timers elapsed event is fire i have done some actions. My problem is that, i am in a dilemma. Lets say the action i have done in Elapsed event, lets say take one hour and the timers interval is set to half an hour. so there are chances that even if the previous call to elapsed event has not ended new call to elapsed event will occur. my question will there be any conflict or is it ok or shall i use threads. please give some advice

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  • 7 Cool Firefox Ad-ons

    <b>The Linux Box:</b> "One of the coolest things about Firefox is its extensibility. Everyone has their collection of favorite Firefox add-ons and I thought I would share mine. Some provide improved organization, some have a certain "WOW!" factor, and others just look pretty."

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  • Failed to Upload a File

    - by CrazyNick
    User 'X' is the site-collection owner. He tries to upload a 500kb file into a document library, got the error "The server has aborted your upload. The files selected may exceed the server's upload size limit. If you are transfering a large group of files, try uploading fewer at a time." however web-application owners are able to upload the file. what would be the issue, any thoughts? Upload size limit for a file – 5 MB Site Quota template set – 50 MB Used Site Quota – 10 MB

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  • A Grand Unified Theory of AI

    A new approach unites two prevailing but often opposed strains in the history of AI research Artificial intelligence - Physics - Alternative - Quantum Mechanics - Quantum Field Theory

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  • linq sort many 2 many question

    - by user169867
    My main entity is called [Contract]. Contract has a many 2 many relationship w/ [Service]. When I query for a list of Contracts I grab the 1st Service available like this: q.Select(c => new ContractSearchResult() { ContractID = c.ContractID, FirstService = c.Contract2Service.FirstOrDefault().Service.Name, ServiceCount = c.Contract2Service.Count, } ).ToList(); q is an IQueryable that has some filtering & paging already applied. (When I display this list I show the FirstService if there's only 1. If 1 I show "My1stService (3)" to show I'm seeing the 1st of 3 services) This works fine. My question is this: Is there any way to sort by FirstService? Or is this impossible? I haven't found a way of expressing this in linq. Any help would be appreciated.

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  • Yahoo OAuth implementation has no way to work offline

    - by Khash
    I need to download my Delicious bookmarks to a non-web application without constant user interaction. I'm using Delicious's V2 API (using oAuth) but the problem is it seems their access tokens expire after one hour. I don't have any issues with redirecting the user to Yahoo for a one time authorization, but what is described here (http://developer.yahoo.com/oauth/guide/oauth-refreshaccesstoken.html) means I would have to refresh my access tokens all the time before they expire when the user is away. Is this really the way they've done their oAuth implementation?

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  • NHibernate - Mapping tagging of entities

    - by ZNS
    Hi! I've been wrecking my mind on how to get my tagging of entities to work. I'll get right into some database structuring: tblTag TagId - int32 - PK Name tblTagEntity TagId - PK EntityId - PK EntityType - string - PK tblImage ImageId - int32 - PK tblBlog BlogId - int32 - PK class Image Id EntityType { get { return "MyNamespace.Entities.Image"; } IList Tags; class Blog Id EntityType { get { return "MyNamespace.Entities.Blog"; } IList Tags; The obvious problem I have here is that EntityType is an identifer but doesn't exist in the database. If anyone could help with the this mapping I'd be very grateful.

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  • i want to connect one aspx webpage to another

    - by user305112
    I want to connect one webpage to another using a command button called email. When the user clicks on the email button it should take them to another webpage where the user can select the emails they want to send to. Then they will click the OK button and it will return them to the previous webpage where they can type in their email and write a message and hit submit.

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  • OutOfMemoryException Processing Large File

    - by Krip
    We are loading a large flat file into BizTalk Server 2006 (Original release, not R2) - about 125 MB. We run a map against it and then take each row and make a call out to a stored procedure. We receive the OutOfMemoryException during orchestration processing, the Windows Service restarts, uses full 2 GB memory, and crashes again. The server is 32-bit and set to use the /3GB switch. Also I've separated the flow into 3 hosts - one for receive, the other for orchestration, and the third for sends. Anyone have any suggestions for getting this file to process wihout error? Thanks, Krip

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  • Model Based Testing Strategies

    - by Doubt
    What strategies have you used with Model Based Testing? Do you use it exclusively for integration testing, or branch it out to other areas (unit/functional/system/spec verification)? Do you build focused "sealed" models or do you evolve complex onibus models over time? When in the product cycle do you invest in creating MBTs? What sort of base test libraries do you exclusively create for MBTs? What difference do you make in your functional base test libraries to better support MBTs?

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  • Flash Builder keeps losing my imported classes...arghh

    - by pfunc
    I've been having this really annoying thing happen the past few days, that has happened before but not as frequently. I create a project in Flash Builder, import some classes, and then on occasion it keeps erasing those classes. So then I get errors in a lot of my datatypes, have to go back through my document and retype the datatype so that it reimports the class. What could be causing this? I know flash builder can be a bit buggy at times, but wasn't sure if someone else has had this problem and knows what might be causing it.

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