打开FileGeoDatabase中要素类

private IFeatureClass OpenFileGdbFtCls(string fn)
        {
            IFeatureClass pftcls = null;
            IWorkspaceFactory wsfactory = new FileGDBWorkspaceFactoryClass();
            IWorkspace ws = wsfactory.OpenFromFile(System.IO.Path.GetDirectoryName(fn),);
            IFeatureWorkspace fws = ws as IFeatureWorkspace;
            pftcls = fws.OpenFeatureClass(System.IO.Path.GetFileNameWithoutExtension(fn));
            return pftcls;
        }

代码如上