protected virtual void OnLineLengthChanged(LineLengthEventArgs e)
 {
     if (LineLengthChanged != null)
     {
         LineLengthChanged(this, e);
     }
 }
		protected virtual void OnLineLengthChanged(LineLengthEventArgs e)
		{
			if (LineLengthChanged != null) {
				LineLengthChanged(this, e);
			}
		}