提取拓扑错误并导出

将Arcengine拓扑错误的要素提取出来并导出为shape文件

拓扑错误提取：

 private void PRV_GetErrorFeature(ITopologyRule IN_TopologyRule)
       {
           IEnvelope Temp_Envolope = (TP_MainTopology as IGeoDataset).Extent;
           IErrorFeatureContainer Temp_ErrorContainer = TP_MainTopology as IErrorFeatureContainer;
           //获取该种错误所有的错误要素
           IEnumTopologyErrorFeature Temp_EnumErrorFeature = Temp_ErrorContainer.get_ErrorFeatures(((IGeoDataset)FDS_MainFeatureDataset).SpatialReference, IN_TopologyRule, Temp_Envolope, true, true);
           //提取一个错误要素
           ITopologyErrorFeature Temp_ErrorFeature = Temp_EnumErrorFeature.Next();
           if (Temp_ErrorFeature != null)
           {
               //作为搭建模型的要素
               IFeature Temp_MoudleFeature = Temp_ErrorFeature as IFeature;
               //生成要素类需要CLSID和EXCLSID
               IFeatureClassDescription Temp_FeatureClassDescription = new FeatureClassDescriptionClass();
               IObjectClassDescription Temp_ObjectClassDescription = (IObjectClassDescription)Temp_FeatureClassDescription;
               //以模型要素为模板构建一个要素类
               FDS_MainFeatureDataset.CreateFeatureClass(IN_TopologyRule.ToString(), Temp_MoudleFeature.Fields, Temp_ObjectClassDescription.InstanceCLSID, Temp_ObjectClassDescription.ClassExtensionCLSID, Temp_MoudleFeature.FeatureType, "Shape", "");
               //打开生成的目标要素类并加入集合留待输出时使用
               IFeatureClass Temp_TargetFeatureClass = (FDS_MainFeatureDataset.Workspace as IFeatureWorkspace).OpenFeatureClass(IN_TopologyRule.ToString());
               LI_TopoErrorFeatureClass.Add(Temp_TargetFeatureClass);
               //将所有错误要素添加进目标要素类
               IWorkspaceEdit Temp_WorkspaceEdit = (IWorkspaceEdit)FDS_MainFeatureDataset.Workspace;
               Temp_WorkspaceEdit.StartEditing(true);
               Temp_WorkspaceEdit.StartEditOperation();
               IFeatureBuffer Temp_FeatureBuffer = Temp_TargetFeatureClass.CreateFeatureBuffer();
               //在目标要素类中插入所有错误要素
               IFeatureCursor featureCursor = Temp_TargetFeatureClass.Insert(true); ;
               while (Temp_ErrorFeature != null)
               {
                   IFeature Temp_Feature = Temp_ErrorFeature as IFeature;
                   //给目标要素附属性
                   Temp_FeatureBuffer.set_Value(1, Temp_ErrorFeature.OriginClassID);
                   Temp_FeatureBuffer.set_Value(2, Temp_ErrorFeature.OriginOID);
                   Temp_FeatureBuffer.set_Value(5, Temp_ErrorFeature.TopologyRuleType);
                   Temp_FeatureBuffer.Shape = Temp_Feature.Shape;
                   object featureOID = featureCursor.InsertFeature(Temp_FeatureBuffer);
                   featureCursor.Flush();//保存要素
                   Temp_ErrorFeature = Temp_EnumErrorFeature.Next();
               }
               Temp_WorkspaceEdit.StopEditOperation();
               Temp_WorkspaceEdit.StopEditing(true);
               System.Runtime.InteropServices.Marshal.ReleaseComObject(featureCursor);
           }
       }

其中：

TP_MainTopology为验证后的拓扑，类行为ITopology

  LI_TopoErrorFeatureClass为记录所有拓扑错误要素类的集合，类型为  List LI_TopoErrorFeatureClass

FDS_MainFeatureDataset为存储要素类的要素数据集，类型为FeatureDataset

输出shape文件

 private void PRV_OutPutToShape()
 {
     FeatureClassToShapefile GP_FeatureClassToShape = new FeatureClassToShapefile();
     foreach (IFeatureClass Each_FeatureClass in LI_TopoErrorFeatureClass)
     {
         GP_FeatureClassToShape.Input_Features = Each_FeatureClass;
         GP_FeatureClassToShape.Output_Folder = "E:\\";
         GP_Tool.Execute(GP_FeatureClassToShape,null);
     }

 }