private void DrawMonthLabel(RectangleF rect)
{
var r = new RectangleF (new PointF (0, 5), new SizeF { Width = 320, Height = 42 });
UIColor.DarkGray.SetColor ();
DrawString (CurrentMonthYear.ToString ("MMMM yyyy"), r, UIFont.BoldSystemFontOfSize (20), UILineBreakMode.WordWrap, UITextAlignment.Center);
}