How to Open an HTML Page in Silverlight

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  I'm encountering the following error when attempting to build a Silverlight project when I add code to open an HTML webpage:

  "The type or namespace name 'Uri' could not be found (are you missing a using directive or assembly reference)?"

  Here is the code:

  using System.Windows;
  using System.Windows.Controls;
  using System.Windows.Browser;
  using System.Net;
  
  namespace gfcpaWebsite
  {
    public partial class PopupWindow : ChildWindow
    {
      public PopupWindow()
      {
        InitializeComponent();
      }
  
      public void SetMessage(string theMessage)
      {
        Message.Text = theMessage;
      }
  
      private void OKButton_Click(object sender, RoutedEventArgs e)
      {
        this.DialogResult = true;
      }
  
      private void CancelButton_Click(object sender, RoutedEventArgs e)
      {
        this.DialogResult = false;
      }
  
      private void httpCallBTTN_Click(object sender, System.Windows.RoutedEventArgs e)
      {
        System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("http://www.gfcpa.com"), "_blank", "toolbar=no,location=no,status=no,menubar=no,resizable=yes");
      }
  
    }
  }
  

  It's not recognizing the Uri.  I'm running Silverlight 4.0, VS2008, with Vista.

  Thank you.

  Tuesday, April 27, 2010 2:26 PM