By default, RadGridView will not be able to filter properties which are IEnumerable. However, with two of its features you can easily add this custom functionality. The first feature you need to use are the Custom Filtering Controls which I have explained in one of my earlier blog posts so I will not go into detail here.

The focus of this blog is how to implement the IFilterDescriptor interface so that our data engine can filter your enumerable property. This interface allows you to provide a filtering expression. This expression will be used when the data engine performs the actual ...

It is my pleasure to present you the newest member of the constantly growing family of XAML controls. RadDataServiceDataSource provides seamless integration between an user interface and data coming from a WCF Data Service. The WCF Data Services technology enables the creation and consumption of OData services for the web. If you want to learn more about the relationship between the two, you may read the whitepaper WCF Data Services and OData At-a-Glance.

With this new control, you can retrieve, shape and edit data using declarative XAML syntax only. RadDataServiceDataSource provides extensive code-behind API for more advanced scenarios. ...

There are only about 7 hours we have left in 2010 and this will be my last blog post for this year. For those of you who are not familiar with the new RadDomainDataSource control for Silverlight, here is my introductory blog post. This one describes how to load data with the new control and this one is about performing CRUD. Having read these three blogs might lead you to the next logical question: What about MVVM support?

I truly believe that every time someone places an UI element or a control in his view model, a baby kitten dies ...

will continue the series of blog posts about RadDomainDataSource with the most important one – the one about loading data. If you are not familiar with RadDomainDataSource then you should go back and read my introductory blog post.

Let us move straight to the data load lifecycle.

Triggering a Load

A load operation can be triggered in two ways. You can either call the Load method explicitly or you can rely on the AutoLoad functionality, which I will explain later in this post.

Building The Query

After a load has been requested a query based on user input is ...

am happy to announce that we have added a new data control to our Silverlight portfolio with one of our latest internal builds. The control will have its official premiere with the upcoming 2010 Q3 Service Pack 1, which is expected in early January. With the release of this service pack you will get access to all of RadDomainDataSource online examples. Since the first version of RadDomainDataSource is now 100% feature complete and has already passed QA, we have decided that we might as well share it with you as a small Christmas present.

RadDomainDataSource is a Silverlight control that ...

I have prepared a sample project with the Silverlight 4 version of RadGridView released yesterday. The sample project was created with Visual Studio 2010, WCF RIA Services RC 2 for Visual Studio 2010, and ADO.NET Entity Framework (.NET 4). I have decided to use the SalesOrderHeader and SalesOrderDetails tables from the Adventure Works Database, because they provide the perfect one-to-many relationship:

I will not go over the steps for creating the ADO.NET Entity Data Model and the Domain Service Class. In case you are not familiar with them, you should start with Brad Abrams’ series of blog ...

Those of you who are familiar with WCF RIA Services know that the DomainDataSource control provides a FilterDescriptors collection that enables you to filter data returned by the query on the server. We have been using this DomainDataSource feature in our “RIA Services with DomainDataSource” online example for almost an year now. In the example, we are listening for RadGridView’s Filtering event in order to intercept any filtering that is performed on the client and translate it to something that the DomainDataSource will understand, in this case a System.Windows.Data.FilterDescriptor being added or removed from its FilterDescriptors collection. Think of RadGridView.FilterDescriptors...

We are glad to announce that the Q1 2010 Release has added another weapon to RadGridView’s growing arsenal of features. This is the brand new RadDataPager control which provides the user interface for paging through a collection of data.

The good news is that RadDataPager can be used to page any collection. It does not depend on RadGridView in any way, so you will be free to use it with the rest of your ItemsControl’s if you chose to do so.

Before you read on, you might want to download the samples solution that I have attached. It ...

If you are familiar with the RadGridView‘s Custom Filtering Functionality you probably know that you can create any kind of user control to replace the default one which looks like this:

Very often, however, you may be perfectly happy with the stock filtering control, but you wish you could modify and adapt it just a little bit to match your particular requirements. What should you do then? Maybe build an entirely new filtering control from scratch that looks just like RadGridView’s default one and adds this tiny bit of functionality? No, that would be insane. There is an ...

In my previous blog post I have demonstrated how to display master-details data in an asynchronous manner with RadGridView for Silverlight and WCF RIA Services. I have decided to refactor the sample project a little bit and add some very basic editing support. Here is the changes I have made to the sample project:

1. I have recreated the ChinookService to support editing.
2. I have encapsulated the details grid into a new user control called AlbumsControl.
3. I have added a “Submit Changes” button below the details grid.
4. I got rid of the IValueConverter that used to create the albums DomainDataSource ...