C# ArcGIS Engine 线打断

/// <summary>
        /// 打断线，用于在点击点处，打断该条线
        /// </summary>
        /// <param name="t_pLineFeatureClass">线图层</param>
        /// <param name="t_pPoint">点击的点</param>
        public static void SplitePolylineByHitPoint(IFeatureClass t_pLineFeatureClass, IPoint t_pPoint)
        {

            IFeatureClass pFeatureClass = t_pLineFeatureClass;
            IFeatureCursor pFeatureCursor;
            IFeature pFeature;
            pFeatureCursor = pFeatureClass.Search(null, false);
            pFeature = pFeatureCursor.NextFeature();

            IDataset dataset = (IDataset)pFeatureClass;
            IWorkspace workspace = dataset.Workspace;
            IWorkspaceEdit workspaceEdit = (IWorkspaceEdit)workspace;

            IRelationalOperator pRelationalOperator;
            //遍历featureClass找到点中的那条线
            while (pFeature != null)
            {
                pRelationalOperator = (IRelationalOperator) pFeature.Shape;
                bool bHasCrosses = pRelationalOperator.Contains(t_pPoint);
                if (bHasCrosses)
                {
                    //对那条线在点击点处，进行打断
                    IPolycurve pPolycurve = (IPolycurve) pFeature.Shape;
                    bool HasSplitHappened;
                    int newPartIndex;
                    int newSegmentIndex;
                    //打断
                    pPolycurve.SplitAtPoint(t_pPoint, false, true, out HasSplitHappened, out newPartIndex,
                        out newSegmentIndex);
                    if (HasSplitHappened)
                    {
                        //从GeometryCollection中分离出打断后的要素，并生成新的要素，并赋于属性
                        IFeature pNewFeature;
                        IGeometryCollection pGeometryCollection = (IGeometryCollection) pPolycurve;

                        for (int i = ; i < pGeometryCollection.GeometryCount; i++)
                        {
                            //生成新的要素
                            workspaceEdit.StartEditing(false);
                            workspaceEdit.StartEditOperation();
                            pNewFeature = pFeatureClass.CreateFeature();
                            IGeometryCollection pline = new PolylineClass();
                            IGeometry pGeo = pGeometryCollection.get_Geometry(i);
                            pline.AddGeometries(, ref pGeo);
                            pNewFeature.Shape = (IPolyline) pline;
                            pNewFeature.Store();
                            workspaceEdit.StopEditOperation();
                            workspaceEdit.StopEditing(true);
                            #region 属性复制（注释掉）
                            //IRow pRow = (IRow) pFeature;
                            //int intIndex = pRow.Fields.FindField("CRoadID");
                            //进行属性复制
                            //for (int k = 2; k < pRow.Fields.FieldCount - 3; k++) //前后几个属性字段不添加
                            //{
                            //    if (pRow.Fields.get_Field(k).Name == "Shape_Length")
                            //    {
                            //        continue;
                            //    }
                            //    if (k != intIndex)
                            //    {
                            //        if (!pRow.get_Value(k).ToString().Equals(""))
                            //        {

                            //            pNewFeature.set_Value(k, pRow.get_Value(k));
                            //        }
                            //    }
                            //    else
                            //    {
                            //        if (k == 0)
                            //        {
                            //            if (!pRow.get_Value(k).ToString().Equals(""))
                            //            {
                            //                pNewFeature.set_Value(k, pRow.get_Value(k));
                            //            }
                            //        }
                            //        else
                            //        {

                            //            if (!pRow.get_Value(k).ToString().Equals(""))
                            //            {
                            //                int intNO = System.Convert.ToInt32(pRow.get_Value(k).ToString()) + 1000*i;
                            //                pNewFeature.set_Value(k, intNO);
                            //            }
                            //        }
                            //    }
                            //}
                            //pNewFeature.Store();
                            #endregion
                        }
                        pFeature.Delete();
                    }
                }
                pFeature = pFeatureCursor.NextFeature();
            }
        }