Datable 的 clone 方法....

static public DataTable Get_Table(string table_road,string Schema)
        {
            DataSet ds=new DataSet (); 
            ds.ReadXmlSchema(Schema);
            ds.ReadXml (table_road,System.Data .XmlReadMode .ReadSchema);
            DataTable dt=ds.Tables[0];
            DataRow[] drs=dt.Select ("","id DESC");
        DataTable dt1=new DataTable ();
            dt1=dt.Clone(); //不加这句试试
            foreach(DataRow dr in drs)
            {
                dt1.ImportRow (dr);

            }
            
            
            return  dt1 ;


        }

Datable 的 clone 方法....