In my previous post I’ve used almost 2 million records to the check the grid performance in WPF and I’ve decided to do the same for Silverlight 4 using WCF RIA Services. The grid again is bound completely codelessly using DomainDataSource and RadDataPager:

  <Grid  x:Name="LayoutRoot">
        <Grid.RowDefinitions>
            <RowDefinition  />
            <RowDefinition  Height="Auto" />
        </Grid.RowDefinitions>
        <riaControls:DomainDataSource  Name="orderDomainDataSource"  QueryName="GetOrdersAndOrderDetails">
            <riaControls:DomainDataSource.DomainContext>
                <my:NorthwindDomainContext  />
            </riaControls:DomainDataSource.DomainContext>
        </riaControls:DomainDataSource>
        <telerik:RadGridView  Name="RadGridView1"  IsReadOnly="True"  AutoExpandGroups="True"  
  ItemsSource="{Binding  Data,  ElementName=orderDomainDataSource}" />
        <telerik:RadDataPager  Grid.Row="1"  PageSize="10"  
  Source="{Binding  Data,  ElementName=orderDomainDataSource}"  DisplayMode="All" />
    </Grid>

And the query again will return join between Northwind Orders and Order_Details:
…

  public  IQueryable<OrdersAndOrderDetails> GetOrdersAndOrderDetails()
    ...

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