public string InitParam;

 

protected void Page_Load(object sender, EventArgs e) 

{ 

    InitParam = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; 

}

 

Next, pass this variable to your Silverlight application via the InitParams:

<param name="initParams" value="IPAddress=<%=InitParam%>"/>

Now, in your App.xaml.cs you can retrieve this parameter in the Application_Startup() event. Pass this variable along to your MainPage:

private void Application_Startup(object sender, StartupEventArgs e) 

{ 

   string ipAddress = e.InitParams["IpAddress"]; 

   this.RootVisual = new MainPage(ipAddress); 

}