AE CreateFeatureClass 创建shp. 删除shp. 向shp中添加要素

   /// <summary>/// 创建多边形shp/// </summary>/// <param name="pPolygon"></param>/// <param name="shpPath"></param>public static  void CreatePolygonFeatureClass(IPolygon pPolygon, string shpfolder,string shpname){IWorkspaceFactory pWorkSpaceFac = new ShapefileWorkspaceFactoryClass();IFeatureWorkspace pFeatureWorkSpace = pWorkSpaceFac.OpenFromFile(shpfolder,0) as IFeatureWorkspace;//创建字段集2IFeatureClassDescription fcDescription = new FeatureClassDescriptionClass();IObjectClassDescription ocDescription = (IObjectClassDescription)fcDescription;//创建必要字段IFields fields = ocDescription.RequiredFields;int shapeFieldIndex = fields.FindField(fcDescription.ShapeFieldName); IField field = fields.get_Field(shapeFieldIndex);IGeometryDef geometryDef = field.GeometryDef; IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef; //geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;//geometryDefEdit.SpatialReference_2 = spatialReference;geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon;ISpatialReferenceFactory pSpatialRefFac = new SpatialReferenceEnvironmentClass();IProjectedCoordinateSystem pcsSys = pSpatialRefFac.CreateProjectedCoordinateSystem((int)esriSRProjCS4Type.esriSRProjCS_Xian1980_3_Degree_GK_Zone_39);geometryDefEdit.SpatialReference_2 = pcsSys;IFieldChecker fieldChecker = new FieldCheckerClass();IEnumFieldError enumFieldError = null;IFields validatedFields = null; //将传入字段 转成 validatedFieldsfieldChecker.ValidateWorkspace = (IWorkspace)pFeatureWorkSpace;fieldChecker.Validate(fields, out enumFieldError, out validatedFields);pFeatureWorkSpace.CreateFeatureClass(shpname, validatedFields, ocDescription.InstanceCLSID, ocDescription.ClassExtensionCLSID, esriFeatureType.esriFTSimple, fcDescription.ShapeFieldName, "");}

 //删除shp

//如果已存在,那么删除IFeatureClass pFCChecker = pFeatureWorkSpace.OpenFeatureClass(shpname);if (pFCChecker != null){IDataset pds = pFCChecker as IDataset;pds.Delete();}

//向shp中添加要素

        /// <summary>/// 向多边形shp中添加要素/// </summary>/// <param name="pPolygon">多边形</param>/// <param name="pFeatureClass">多边形shp</param>public static void AddFeatureToFeatureClass(IPolygon pPolygon,IFeatureClass pFeatureClass){IFeature pFeature = pFeatureClass.CreateFeature();pFeature.Shape = pPolygon;pFeature.Store();                }

 

//官方例子

  public void IFeatureClass_CreateFeature_Example(IFeatureClass featureClass)  {       //Function is designed to work with polyline data     if (featureClass.ShapeType != ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline) { return; }//create a geometry for the features shape       ESRI.ArcGIS.Geometry.IPolyline polyline = new ESRI.ArcGIS.Geometry.PolylineClass();    ESRI.ArcGIS.Geometry.IPoint point = new ESRI.ArcGIS.Geometry.PointClass();       point.X = 0; point.Y = 0;      polyline.FromPoint = point;point = new ESRI.ArcGIS.Geometry.PointClass();        point.X = 10; point.Y = 10;        polyline.ToPoint = point;IFeature feature = featureClass.CreateFeature();//Apply the constructed shape to the new features shape       feature.Shape = polyline;ISubtypes subtypes = (ISubtypes)featureClass;       IRowSubtypes rowSubtypes = (IRowSubtypes)feature;    if (subtypes.HasSubtype)// does the feature class have subtypes?        {  rowSubtypes.SubtypeCode = 1; //in this example 1 represents the Primary Pipeline subtype       }// initalize any default values that the feature has       rowSubtypes.InitDefaultValues();//Commit the default values in the feature to the database       feature.Store();//update the value on a string field that indicates who installed the feature.  feature.set_Value(feature.Fields.FindField("InstalledBy"), "K Johnston");//Commit the updated values in the feature to the database     feature.Store();   }