FlexFieldControlLib.FieldControl.IsEditKey C# (CSharp) Method

        private static bool IsEditKey( KeyEventArgs e )
        {
            if ( e.KeyCode == Keys.Back ||
              e.KeyCode == Keys.Delete )
             {
            return true;
             }
             else if ( e.Modifiers == Keys.Control &&
                  ( e.KeyCode == Keys.C ||
                    e.KeyCode == Keys.V ||
                    e.KeyCode == Keys.X ) )
             {
            return true;
             }

             return false;
        }