How to set focus on TextBox in Silverlight 4 out-of-browser popup

Question

I have a simple ChildWindow popup in Silverlight 4 (beta).

Important: This is an out-of-browser application.

i want to auto

Answer 1

Thanks for all the post, but i have find the work done through following.

private void UserControl_Loaded(object sender, RoutedEventArgs e)
    {
        if (App.Current.IsRunningOutOfBrowser)
        {
            txtSalesOrderNo.Focus(); 
        }
        else
        {
            System.Windows.Browser.HtmlPage.Plugin.Focus();
            txtSalesOrderNo.Focus(); 
        }

    }