public void FireCheckStateChanged(CheckableGroupBox source, bool isChecked)
 {
     SelectionChange(source, new CheckableGroupBoxEventArgs()
     {
         Control = source, IsChecked = isChecked
     });
 }
		public void FireCheckStateChanged(CheckableGroupBox source, bool isChecked)
		{
			SelectionChange(source, new CheckableGroupBoxEventArgs(){ Control = source, IsChecked=isChecked });
		}