//在数据集中创建要素private void menuItem25_Click(object sender, System.EventArgs e){CreateFClassInPDB(@"C:\ArcGIS\ArcTutor\BuildingaGeodatabase\Montgomery.mdb");}public static void CreateFClassInPDB(string filePath){string shapeFieldName="shape";IFeatureWorkspace pFWS;try{pFWS=openPDB(filePath);//IEnumDataset pDatasets;//pDatasets=pWS.get_Datasets(esriDatasetType.esriDTFeatureDataset);

IFeatureDataset pFeatureDataset=pFWS.OpenFeatureDataset("Water");//MessageBox.Show(pFeatureDataset.Name);// IDataset pDataset=pDatasets.Next();// IFeatureDataset pFeatureDataset=pDataset as IFeatureDataset;

IGeoDataset pGeoDataset=pFeatureDataset as IGeoDataset;IFields pFields = null;IFieldsEdit pFieldsEdit = null;pFields = new FieldsClass();pFieldsEdit=pFields as IFieldsEdit;pFieldsEdit.FieldCount_2=2;IField pField = null;IFieldEdit pFieldEdit = null;//Make the shape field it will need a geometry definition, with a spatial reference

pField=new FieldClass();pFieldEdit=pField as IFieldEdit;pFieldEdit.Name_2=shapeFieldName;pFieldEdit.Type_2=esriFieldType.esriFieldTypeGeometry;IGeometryDef pGeomDef = null;IGeometryDefEdit pGeomDefEdit = null;pGeomDef = new GeometryDefClass();pGeomDefEdit =pGeomDef as IGeometryDefEdit;pGeomDefEdit.GeometryType_2=esriGeometryType.esriGeometryPolygon;pGeomDefEdit.SpatialReference_2=pGeoDataset.SpatialReference;//get the spatial reference

pFieldEdit.GeometryDef_2=pGeomDefEdit;//pFieldsEdit.AddField(pField);

pFieldsEdit.set_Field(0,pField);//Add another miscellaneous text field

pField = new FieldClass();pFieldEdit = pField as IFieldEdit;pFieldEdit.Length_2=30;pFieldEdit.Name_2="TextField";pFieldEdit.Type_2=esriFieldType.esriFieldTypeString;//pFieldsEdit.AddField(pField);

pFieldsEdit.set_Field(1,pField);//pFeatureDataset.CreateFeatureClass("test",pFields,null,null,esriFeatureType.esriFTSimple,"Shape","");

UID pUID;pUID = new UIDClass();pUID.Value="esriGeoDatabase.Feature";//pFeatureDataset.CreateFeatureClass("test",pFields,pUID,null,esriFeatureType.esriFTSimple,"Shape","");

pFeatureDataset.CreateFeatureClass("test",pFields,pUID,null,esriFeatureType.esriFTSimple,"Shape","");MessageBox.Show("创建成功");}catch(Exception e){MessageBox.Show(e.Message);}}//创建shapefile文件public static void createShapeFile(String folderName,String shapeName){if(folderName==""||shapeName=="") return;string shapeFieldName="shape";try{IFeatureWorkspace pFWS = null;IWorkspaceFactory pWorkspaceFactory = null;pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();//if(pWorkspaceFactory.IsWorkspace(folderName)==false) return;

pFWS=pWorkspaceFactory.OpenFromFile(folderName,0) as IFeatureWorkspace;IFields pFields = null;IFieldsEdit pFieldsEdit = null;pFields = new FieldsClass();pFieldsEdit=pFields as IFieldsEdit;IField pField = null;IFieldEdit pFieldEdit = null;//Make the shape field it will need a geometry definition, with a spatial reference

pField=new FieldClass();pFieldEdit=pField as IFieldEdit;pFieldEdit.Name_2=shapeFieldName;pFieldEdit.Type_2=esriFieldType.esriFieldTypeGeometry;IGeometryDef pGeomDef = null;IGeometryDefEdit pGeomDefEdit = null;pGeomDef = new GeometryDefClass();pGeomDefEdit =pGeomDef as IGeometryDefEdit;pGeomDefEdit.GeometryType_2=esriGeometryType.esriGeometryPolygon;pGeomDefEdit.SpatialReference_2=new UnknownCoordinateSystemClass();pFieldEdit.GeometryDef_2=pGeomDefEdit;pFieldsEdit.AddField(pField);//Add another miscellaneous text field

pField = new FieldClass();pFieldEdit = pField as IFieldEdit;pFieldEdit.Length_2=30;pFieldEdit.Name_2="TextField";pFieldEdit.Type_2=esriFieldType.esriFieldTypeString;pFieldsEdit.AddField(pField);IFeatureClass pFeatClass = null;pFeatClass = pFWS.CreateFeatureClass(shapeName, pFields, null, null,esriFeatureType.esriFTSimple, shapeFieldName, "");MessageBox.Show("名为"+shapeName+"的shape文件创建成功");}catch(Exception e){MessageBox.Show(e.Message);}}