string gdbPath = @"D:DocumentsArcGISDefault.gdb"; FileGDBWorkspaceFactoryClass pFileGDBWorkspaceFactoryClass = new FileGDBWorkspaceFactoryClass(); IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)pFileGDBWorkspaceFactoryClass.OpenFromFile(gdbPath, 0); IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass("shp名称");