gdb数据导入导出.docx

调用用下面的方法可以将要素类从sde导出到shp或者mdb 或者从三个中的任意一个导出到另外一个。方法是：/ / 将一个要素类从一个工作空间转移到另外一个工作空间 / 注意目标工作空间不能有改要素类，必须先清除 / / 源工作空间 / 目标工作空间 / 源要素类名 / 目标要素类名 public void IFeatureDataConverter_ConvertFeatureClass(IWorkspace sourceWorkspace, IWorkspace targetWorkspace, string nameOfSourceFeatureClass, string nameOfTargetFeatureClass) /create source workspace name IDataset sourceWorkspaceDataset = (IDataset)sourceWorkspace; IWorkspaceName sourceWorkspaceName = (IWorkspaceName)sourceWorkspaceDataset.FullName; /create source dataset name IFeatureClassName sourceFeatureClassName = new FeatureClassNameClass(); IDatasetName sourceDatasetName = (IDatasetName)sourceFeatureClassName; sourceDatasetName.WorkspaceName = sourceWorkspaceName; sourceDatasetName.Name = nameOfSourceFeatureClass; /create target workspace name IDataset targetWorkspaceDataset = (IDataset)targetWorkspace; IWorkspaceName targetWorkspaceName = (IWorkspaceName)targetWorkspaceDataset.FullName; /create target dataset name IFeatureClassName targetFeatureClassName = new FeatureClassNameClass(); IDatasetName targetDatasetName = (IDatasetName)targetFeatureClassName; targetDatasetName.WorkspaceName = targetWorkspaceName; targetDatasetName.Name = nameOfTargetFeatureClass; /Open input Featureclass to get field definitions. ESRI.ArcGIS.esriSystem.IName sourceName = (ESRI.ArcGIS.esriSystem.IName)sourceFeatureClassName; IFeatureClass sourceFeatureClass = (IFeatureClass)sourceName.Open(); /Validate the field names because you are converting between different workspace types. IFieldChecker fieldChecker = new FieldCheckerClass(); IFields targetFeatureClassFields; IFields sourceFeatureClassFields = sourceFeatureClass.Fields; IEnumFieldError enumFieldError; / Most importantly set the input and validate workspaces! fieldChecker.InputWorkspace = sourceWorkspace; fieldChecker.ValidateWorkspace = targetWorkspace; fieldChecker.Validate(sourceFeatureClassFields, out enumFieldError, out targetFeatureClassFields); / Loop through the output fields to find the geomerty field IField geometryField; for (int i = 0; i targetFeatureClassFields.FieldCount; i+) if (targetFeatureClassFields.get_Field(i).Type = esriFieldType.esriFieldTypeGeometry) geometryField = targetFeatureClassFields.get_Field(i); / Get the geometry fields geometry defenition IGeometryDef geometryDef = geometryField.GeometryDef; /Give the geometry definition a spatial index grid count and grid size IGeometryDefEdit targetFCGeoDefEdit = (IGeometryDefEdit)geometryDef; targetFCGeoDefEdit.GridCount_2 = 1; targetFCGeoDefEdit.set_GridSize(0, 0); /Allow ArcGIS to determine a valid grid size for the data loaded targetFCGeoDefEdit.SpatialReference_2 = geometryField.GeometryDef.SpatialReference; / we want to convert all of the features IQueryFilter queryFilter = new QueryFilterClass(); queryFilter.WhereClause = ; / Load the feature class IFeatureDataConverter fctofc = new FeatureDataConverterClass(); IEnumInvalidObject enumErrors = fctofc.ConvertFeatureClass(sourceFeatureClassName, queryFilter, null, targetFeatureClassName, geometryDef, targetFeatureClassFields, , 1000, 0); break; 只要设定了工作空间，不管工作空间是文件的 数据库的 还是什么的，可以自由转换。比如我要将sde的要素类导出成shp文件，如下：public void Export_Shp(IFeatureClass pFeatClass, string path) IDataset pDataSet = pFeatClass as IDataset; IWorkspace pWorkspace = pDataSet.Workspace; string strShapeFolder = path; string fileName = pFeatClass.AliasName; string fullFileName = path + / + fileName + .shp; fullFileName = fullFileName.Replace(/, /); if (File.Exists(fullFileName) /如果已经存在就先删除 DirectoryInfo di = new DirectoryInfo(path); FileInfo fis = di.GetFiles(fileName + *); foreach (FileInfo fi in fis) fi.Delete(); IWorkspaceFactory pWSF = new ShapefileWorkspaceFactoryClas