private void Application_Startup(object sender, StartupEventArgs e)
{
// Load the main control
this.RootVisual = new UserControlContainer();
HomePage page = new HomePage();
((UserControlContainer)this.RootVisual).SwitchControl(page);
}
private void ok_button_Click(object sender, RoutedEventArgs e)
{
HomePage page = new HomePage();
((UserControlContainer)Application.Current.RootVisual).SwitchControl(page);
}