public void Remove(TabButton button)
{
button.TouchUpInside -= Button_TouchUpInside;
}
public void Insert(TabButton button, int index)
{
Buttons.Insert(index, button);
InsertSubview(button, index);
}
public void Add(TabButton button)
{
Buttons.Add(button);
AddSubview(button);
button.TouchUpInside += Button_TouchUpInside;
}