2.11.2.Creating the Application for Silverlight.

  1. Open the ADO.Net Data Service project in

    Visual Studio

  2. In the

    Solution Explorer

    right click on the RDFWebDemo solution and add a new Project.

  3. In the

    Add New Project

    dialog select

    Silverlight Application

    and click


    . This will open the

    Add Silverlight Application


    Figure2.167.Add Silverlight Application

    Add Silverlight Application

  4. Select

    Link this Silverlight Control into an existing Web Site

    and make sure the Web Site selected is RDFWebDemo. Select

    Add a test page that references the application


    Make it the start page


    Figure2.168.Add a test page

    Add a test page

  5. In Solution Explorer, select RDFWebDemo, open the Project menu and select Properties.

  6. Select the


    tab, and select

    Specific Page

    in the

    Start Action

    section. Click on the ellipsis and select SilverlightApplication1TestPage.html as the start page.

  7. Add a reference to the data service. In the

    Solution Explorer

    right click on SilverlightApplication1 and select

    Add Service Reference

  8. In the

    Add Service Reference

    dialog click the


    button. Your ADO.Net Data Service should appear in the Address box and the Services box.

  9. Select the service and click


    . ServiceReference1 will now be added to the ServiceReferences.

  10. Open page.xaml.cs and add references to the service and to the System.Data.Services.Client assembly by adding the following using statements at the top of the file:

    using System.Data.Services.Client;
    using SilverlightApplication1.ServiceReference1;
  11. We need at create a data service context to reference the data from the service and to load data from the view, sparqlview, exposed by the service. Add the following lines to the page constructor after InitializeComponent()

    DataServiceContext svcCtx = new DataServiceContext(new Uri("WebDataService1.svc", UriKind.Relative));
    svcCtx.BeginExecute<sparqlview>(new Uri("sparqlview", UriKind.Relative), loadSCallback, svcCtx);
  12. Add the loadSCallback method to the page class. The method loads the data from sparqlview and puts it in a List. This List populates a list box on the page.

    private void loadSCallback(IAsyncResult asyncResult)
    {   List<Uri> uList = new List<Uri>();
        DataServiceContext ctx = asyncResult.AsyncState as DataServiceContext;
        foreach (sparqlview sv in ctx.EndExecute<sparqlview>(asyncResult))
         uList.Add(new Uri(sv.s));
        listBox1.DataContext = uList;
  13. Add the list box to the page. In the

    Solution Explorer

    double click on page.xaml to open it in the editor. Add the following code between the <grid> and </grid> tags.

    <ListBox x:Name="listBox1"
        Margin="25,8,26,-78" Grid.RowSpan="1"
        Grid.Row="0" VerticalAlignment="Stretch"
        ItemsSource="{Binding Mode=OneWay}" >
                <StackPanel x:Name="DisplayListData"
                 Margin="5" >
                     Content ="{Binding}"
  14. Build the Silverlight application and launch without debugging using

    Ctrl F5

    . This will launch the browser and open SilverlightApplication1TestPage.aspx.



Clicking on one of the IRIs will open the page using description.vsp.

Figure2.170.using description.vsp

using description.vsp