private static Popup DefaultFindOrCreatePopupFor(UIElement target) { var targetName = target.GetName(); if (string.IsNullOrEmpty(targetName)) { var popup = new Popup(); #if !SILVERLIGHT popup.PlacementTarget = target; #endif return popup; } var popupName = DeterminePopupName(targetName); return target.FindName(popupName) as Popup; }