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 posts but after doing a little research the below thing work for me

in Xamal:

// Initialiazing Main Part View Model
/// 
/// 
public ChildWindowLoginControl(MainPartViewModel mainPartViewModel)
{
     InitializeComponent();
     this.DataContext = mainPartViewModel;
     System.Windows.Browser.HtmlPage.Plugin.Focus();
     this.GotFocus += (s, e) => { txtUserName.Focus(); };
}