public override void AwakeFromNib()
{
base.AwakeFromNib();
Column1Button.AddGestureRecognizer(new UITapGestureRecognizer(() => OnColumnClick(Headers.Count - 4)));
Column1Button.AddGestureRecognizer(new UILongPressGestureRecognizer((r) => OnColumnLongPress(Headers.Count - 4, Column1Button, r)));
Column2Button.AddGestureRecognizer(new UITapGestureRecognizer(() => OnColumnClick(Headers.Count - 3)));
Column2Button.AddGestureRecognizer(new UILongPressGestureRecognizer((r) => OnColumnLongPress(Headers.Count - 3, Column2Button, r)));
Column3Button.AddGestureRecognizer(new UITapGestureRecognizer(() => OnColumnClick(Headers.Count - 2)));
Column3Button.AddGestureRecognizer(new UILongPressGestureRecognizer((r) => OnColumnLongPress(Headers.Count - 2, Column3Button, r)));
Column4Button.AddGestureRecognizer(new UITapGestureRecognizer(() => OnColumnClick(Headers.Count - 1)));
Column4Button.AddGestureRecognizer(new UILongPressGestureRecognizer((r) => OnColumnLongPress(Headers.Count - 1, Column4Button, r)));
}