由图层判断数据源类型

IFeatureClass pFC =pFeatureLyr.FeatureClass;

IDataset dataset = pFC as IDataset;

IWorkspaceName ws = ((IDatasetName)(dataset.FullName)).WorkspaceName;

if (ws.WorkspaceFactoryProgID.IndexOf("AccessWorkspaceFactory") >-1)

{

}

else if (ws.WorkspaceFactoryProgID.IndexOf("FileGDBWorkspaceFactory")> -1)

{

}

else if (ws.WorkspaceFactoryProgID.IndexOf("SdeWorkspaceFactory")> -1)

{

}

……

WorkspaceFactoryProgID

·       esriDataSourcesGDB.AccessWorkspaceFactory

·       esriDataSourcesFile.ArcInfoWorkspaceFactory

·       esriDataSourcesFile.CadWorkspaceFactory

·       esriDataSourcesGDB.FileGDBWorkspaceFactory

·       esriDataSourcesOleDB.OLEDBWorkspaceFactory

·       esriDataSourcesFile.PCCoverageWorkspaceFactory

·       esriDataSourcesRaster.RasterWorkspaceFactory

·       esriDataSourcesGDB.SdeWorkspaceFactory

·       esriDataSourcesFile.ShapefileWorkspaceFactory

·       esriDataSourcesOleDB.TextFileWorkspaceFactory

·       esriDataSourcesFile.TextFileWorkspaceFactory

·       esriDataSourcesFile.TinWorkspaceFactory

·       esriDataSourcesFile.VpfWorkspaceFactory