private void OnDraw(object sender, GameTimerEventArgs e)
{
// Render the Silverlight controls using the UIElementRenderer.
elementRenderer.Render();
scene.Draw();
spriteBatch.Begin();
// Using the texture from the UIElementRenderer,
// draw the Silverlight controls to the screen.
spriteBatch.Draw(elementRenderer.Texture, Vector2.Zero, Color.White);
spriteBatch.End();
}
