New Post: DropDownButton in ListView loses focus

Hi,

Maybe it' something to do with the GridView or the ListView. Try handling the event on a mouseDown in the content of the DropDownButton. In this case, in the ColorCanvas :

protected override void OnMouseLeftButtonDown( MouseButtonEventArgs e )
    {
      base.OnMouseLeftButtonDown( e );
      e.Handled = true;
    }

This way, no one will handle the mouseDown when the popup of the DropDownButton is open and clicked.