string oshpDir = System.IO.Path.GetDirectoryName(outfile);

            string oshpfilename = System.IO.Path.GetFileName(outfile);

            IWorkspaceFactory wsFactory = new ShapefileWorkspaceFactoryClass();

            IWorkspaceName workspaceName = wsFactory.Create(oshpDir, oshpfilename, null, );

            ESRI.ArcGIS.esriSystem.IName name = (ESRI.ArcGIS.esriSystem.IName)workspaceName;

            IWorkspace copyWorkspace = (IWorkspace)name.Open();