public static System.Collections.Generic.List <IFeature> Split(IFeature ifeature_0, IPolyline ipolyline_0) { System.Collections.Generic.List <IFeature> list = new System.Collections.Generic.List <IFeature>(); ITopologicalOperator4 topologicalOperator = ifeature_0.ShapeCopy as ITopologicalOperator4; IGeometry geometry = topologicalOperator.Intersect(ipolyline_0, esriGeometryDimension.esriGeometry0Dimension); System.Collections.Generic.List <IFeature> list2 = new System.Collections.Generic.List <IFeature>(); ZDEditTools.StartEditDateTime = System.DateTime.Now; if (geometry.IsEmpty) { IGeometry geometry2; IGeometry geometry3; topologicalOperator.Cut(ipolyline_0, out geometry2, out geometry3); if (geometry2 != null && geometry3 != null) { IFeature ifeature_ = ZDEditTools.WriteHistory(ifeature_0); IFeature feature = ZDEditTools.ZDFeatureClass.CreateFeature(); list.Add(feature); feature.Shape = geometry2; RowOperator.CopyFeatureAttributeToFeature(ifeature_0, feature); feature.Store(); ZDEditTools.Oids.Add(feature.OID); ZDEditTools.WriteHistoryLine(ifeature_0, feature, ifeature_, 2, ZDEditTools.StartEditDateTime); feature = ZDEditTools.ZDFeatureClass.CreateFeature(); list.Add(feature); feature.Shape = geometry3; RowOperator.CopyFeatureAttributeToFeature(ifeature_0, feature); feature.Store(); ZDEditTools.Oids.Add(feature.OID); ZDEditTools.WriteHistoryLine(ifeature_0, feature, ifeature_, 2, ZDEditTools.StartEditDateTime); ifeature_0.Delete(); } } else if (geometry is IMultipoint && (geometry as IPointCollection).PointCount > 1) { ISpatialFilter spatialFilter = new SpatialFilter(); spatialFilter.Geometry = ipolyline_0; spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects; IFeatureCursor featureCursor = (ifeature_0.Class as IFeatureClass).Search(spatialFilter, false); for (IFeature feature2 = featureCursor.NextFeature(); feature2 != null; feature2 = featureCursor.NextFeature()) { if (feature2.OID != ifeature_0.OID) { list2.Add(feature2); } } ComReleaser.ReleaseCOMObject(featureCursor); int pointCount = (geometry as IPointCollection).PointCount; IPoint ipoint_ = (geometry as IPointCollection).get_Point(0); IPoint ipoint_2 = (geometry as IPointCollection).get_Point(pointCount - 1); foreach (IFeature current in list2) { ZDEditTools.HitTest(current, ipoint_); ZDEditTools.HitTest(current, ipoint_2); } IGeometryCollection geometryCollection = topologicalOperator.Cut2(ipolyline_0); System.DateTime startEditDateTime = ZDEditTools.StartEditDateTime; IFeature ifeature_ = ZDEditTools.WriteHistory(ifeature_0); for (int i = 0; i < geometryCollection.GeometryCount; i++) { IGeometry shape = geometryCollection.get_Geometry(i); IFeature feature = ZDEditTools.ZDFeatureClass.CreateFeature(); list.Add(feature); feature.Shape = shape; RowOperator.CopyFeatureAttributeToFeature(ifeature_0, feature); feature.Store(); ZDEditTools.Oids.Add(feature.OID); ZDEditTools.WriteHistoryLine(ifeature_0, feature, ifeature_, 2, startEditDateTime); } ifeature_0.Delete(); } return(list); }