private void OnListBoxMeasureItem(object sender, MeasureItemEventArgs e)
{
UpdateContentFromItemIndex(e.Index);
// Ask the view element to layout in given space, needs this before a render call
using (ViewLayoutContext context = new ViewLayoutContext(this, Renderer))
{
Size size = _drawButton.GetPreferredSize(context);
e.ItemWidth = size.Width;
e.ItemHeight = size.Height;
}
}