Telerik blogs

Tag: XAML

  • Desktop WPF

    How to: Validate data with SL/WPF RadGridView Part II – asynchronous validation on item/row level via RIA services and INotifyDataErrorInfo interface

    In my previous post I’ve tried to explain RadGridView validation mechanism and support for 2 layers of validation (UI and Data) for a property/cell level. RadGridView exposes same events on a row level too (RowValidating, RowValidated and RowEditEnded). Since this theory you can find on our online help I’ll begin with the interesting stuff - asynchronous validation example.   I’m glad to announce that with the next (2010.Q2) version RadGridView will support asynchronous validation. By asynchronous validation I mean that RadGridView can save a value in its collection and from somewhere (server side usually) to receive a message that this value doesn’t pass some...
    by Yavor Georgiev
    July 02, 2010
  • Desktop WPF

    How - to: Change the Default Keyboard Behavior in RadGridView for Silverlight/ WPF

    RadGridView provides a set of keyboard navigation scenarios that will result in certain consequence of commands to be executed. Thus – and naturally in this case - when clicking on the Del–button will cause deletion of the current item, Ins-button will add a new one into the grid. However, there exists a great possibility that you do not need this pre-coded behavior and you want to predefine it. In that case you can follow up one of the following two scenarios. The first one is to use the basic interface responsible for the keyboard navigation – IKeyboardCommandProvider and implement your own...
    by Nedyalko Nikolov
    June 30, 2010
  • Web

    Debugging Silverlight with Firefox 3.6.4

    Today Mozilla released FireFox 3.6.4, and in the new version plugins are isolated in their own process.  As such,  the VS debugger attaches to “firefox.exe” instead of the new process FireFox creates named “plugin-container.exe” when you start debugging a silverlight application.  There are 2 fairly easy fixes.   Fix 1 Manually attach the visual studio debugger to “plugin-container.exe”   Fix 2  This involves changing Firefox’s config, and really should only be done to ease silverlight debugging until a proper fix is released. Type "about:config" into FF's address bar Accept the warning (if applicable) Search for the entry "dom.ipc.plugins.enabled.npctrl.dll" Change its value from "true" to "false" (double-click)...
    by Valio Stoychev
    June 24, 2010
  • Release

    What’s new in the Beta of RadRichTextBox for Silverlight

    We are very excited with the announcement of our Q2 Beta release of RadControls for Silverlight 4.One of the most important new announcements is the new version of RadRichTextBox. The control went a long way since its CTP version and now we are eager to show you some of the new features we worked hard on during the last couple of months. New Document Formats First of all we will present the newly added import/export support for Html and Docx formats, which was among the most demanded features, because its heavy use for many business-oriented scenarios. Take a look at the screenshots below to...
    by Mihail Valkov
    June 17, 2010
  • Web

    Touch scrolling in RadGridView for Silverlight

    A popular feature that is often requested is multi-touch scrolling in the RadGridView control. This is easily achievable in WPF, because of the new yummy System.Windows.Input.Manipulations namespace introduced in .NET 4.0. However, Silverlight has yet to receive such a high-level touch API. The only tool we have at our disposal is the System.Windows.Input.Touch class with its one member, the FrameReported event. Nevertheless, it gives us a lot of control when it comes to handling touch events. I used it to make a little behavior that enables touch scrolling. You can also scroll horizontally and by dragging the mouse (both options controlled...
    pavelrpavlov by Pavel Pavlov
    June 17, 2010
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