Read the other posts in this series: Part I Part II In the previous blog posts listed above, I showed how Telerik’s new LINQ implementation works with WCF RIA Services. I showed how to build your own Domain Service as well as build custom query methods. In this post I will show how to build a metadata class. (Note: future versions of the OpenAccess LINQ Implementation will produce the metadata class for you automatically.) The WCF RIA Services metadata class is a separate class from the DomainService that contains information about the entities. In this class you can write custom validation logic, set attributes of the...

Coming with 2010.Q2 release of RadControls for ASP.NET AJAX is some eye candy for RadGrid users. In fact, never has an HTML grid been more interactive. RadGrid column animations will have your column headers fly around when you reorder columns or drag them over to the group panel. To get an idea of what column animations really are, try reordering some columns in Windows Explorer on Windows 7: What you get is a nice animation where headers move aside to make room for the dragged header. The idea is the same with RadGrid too. You drag one header to reorder the columns and the rest of the headers move...

In my last blog post, I showed how Telerik’s new LINQ implementation works with WCF RIA Services. In that post I built a Domain Model from the Northwind database as well as a RIA Services Domain Service. I then showed the drag and drop features of RIA Services and created a simple Silverlight application with no code. Today we are going to take that example one step further by creating some custom server side Query Methods. A query method is just a facility to query a data source. In RIA Services, you define a query method explicitly so it can be used on the client. This is pretty straight forward...

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...

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...