两条线相交，有多个交点，如何用这些交点一次性分割其中的一条线，获取其所有分割后的要素

【解决办法】：
想要一次性得到所有的打断线可以使用IPolycurve2.SplitAtPoints进行多点的切割。执行完后该IPolyline变为了多个Part，可以转为IGeometryCollection，遍历获取每个部分，新建Feature。参考该部分代码可以实现（前提是两条线有交点）。

ITopologicalOperator qTopologicalOperator = qFeature.Shape as ITopologicalOperator;//qFeature为要打断的线要素

            IPointCollection qPointCollection = qTopologicalOperator.Intersect(mGeometry, esriGeometryDimension.esriGeometry0Dimension) as IPointCollection; // mGeometry为与其相交的线                  

            IPolyline qPolyline = qFeature.Shape as IPolyline;   



            IEnumVertex enumVertex = qPointCollection.EnumVertices;

            IPolycurve2 polycurve = qPolyline as IPolycurve2;

            polycurve.SplitAtPoints(enumVertex,false,true,1);

            IGeometryCollection geoCol = polycurve as IGeometryCollection;

            object Missing = Type.Missing; 

            for(int i = 0;i<geoCol.GeometryCount;i++)

            {

                IFeature newFea = qFeatureClass.CreateFeature();

                IGeometryCollection newPol = new PolylineClass();

                IPath geo = new PathClass();

                geo = geoCol.get_Geometry(i) as IPath;

                newPol.AddGeometry(geo as IGeometry,ref Missing, ref Missing);

                newFea.Shape = newPol as IGeometry;

                newFea.Store();

            } 

polycurve.SplitAtPoints(enumVertex,false,true,1);
程序在执行到这句的时候崩溃了 没有任何提示，请问在何种情况下会出现这种情况？（使用直线切割椭圆）