CRUD operations in Siverlight using ADO.NET Data Service

<Canvas x:Name="parentCanvas"
        xmlns="http://schemas.microsoft.com/client/2007" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        Loaded="Page_Loaded" 
        x:Class="SilverlightProject1.Page;assembly=ClientBin/SilverlightProject1.dll"
        Width="640"
        Height="480"
        Background="White"
        >
  <Canvas x:Name='insert' Background='Red' Width="640"
          Height="100" Canvas.Top="0">
    <TextBlock x:Name="insertTextBlock" Text ="Click me to insert the record" Canvas.Top="34" Width="640" />
  </Canvas>
  <Canvas x:Name='delete' Background='Yellow' Width="640"
        Height="100" Canvas.Top="100">
    <TextBlock x:Name="deleteTextBlock" Text ="Click me to delete the record" Canvas.Top="34" Width="640" />
  </Canvas>
  <Canvas x:Name='update' Background='Blue' Width="640"
        Height="100" Canvas.Top="200">
    <TextBlock x:Name="updateTextBlock" Text ="Click me to update the record" Canvas.Top="34" Width="640" />
  </Canvas>
  <Canvas x:Name='view' Background='Green' Width="640"
        Height="100" Canvas.Top="300">
    <TextBlock x:Name="viewTextBlock" Text ="Click me to view the record" Canvas.Top="34" Width="640" />
  </Canvas>
</Canvas>