ArcGIS Engine 改变线IPolyline的方向

有时候需要改变一下线的方向来组成要要的图形，可以按一下方法来变换一下。

如果看官有好的方法的话，请不吝贴上为谢！

private IPolyline ChangeDirection(IPolyline polyline)

{

IPointCollection pointCollection = polyline as IPointCollection;

IPointCollection newPC = newPolylineClass();

for (int i =pointCollection.PointCount - 1; i >= 0; i--)

     {

      newPC.AddPoint(pointCollection.get_Point(i), mis, mis);

     }

IPolyline newPolyline = newPC as IPolyline;

}