Engine中如何实现ArcMap中的Split Polygons

使用IFeatureConstruction.SplitPolygonsWithLines方法

IFeatureLayer polygonLayer = axMapControl1.get_Layer(1) as IFeatureLayer; IFeatureClass polygonFeatureClass = polygonLayer.FeatureClass; IEnvelope envelope = (polygonFeatureClass as IGeoDataset).Extent; IEnumFeature enumLineFeature = axMapControl1.Map.FeatureSelection as IEnumFeature; IFeatureConstruction featureCon = new FeatureConstructionClass(); featureCon.SplitPolygonsWithLines(null, polygonFeatureClass, envelope, enumLineFeature, null, 0.00256);