dataview 控件内容到datatable



private  DataTable get_datatable()
        {
            gridView1.RefreshEditor();

             object  data  =  gridView1.DataSource;
            DataTable dataTable  =   null ;
             if  (data  is  DataSet)
            {
                DataSet ds  =  data  as  DataSet;
                 if  (ds  !=   null   &&  ds.Tables.Count  ==   1 )
                {
                    dataTable  =  ds.Tables[ 0 ];
                }
            }
             else   if  (data  is  DataView)
            {
                DataView dv  =  data  as  DataView;
                dataTable  =  dv.Table;
            }
             else   if  (data  is  DataTable)
            {
                dataTable  =  data  as  DataTable;
            }
             return  dataTable;
        }