private void OnInnerChildLoaed(RoutedEventArgs e)
{
var innerControl = GetInnerControl();
if (innerControl == null)
return;
Keyboard.Focus(innerControl);
if (!Popup && e.IsNot<MouseButtonEventArgs>())
innerControl.Loaded += (s, arg) => innerControl.RaiseEvent(e);
innerControl.PreviewKeyDown += (s, keyEventArgs) =>
{
Dispatcher.BeginInvoke(() => TryEndEdit(keyEventArgs.Key), DispatcherPriority.ContextIdle);
e.Handled = true;
};
}