asp，对待绑定数据加序号列（DataSet）

 string sql_sel = "select InS.ID as isID, InS.InventorySize , InS.MinValue,InS.MaxValue  from InventorySize InS ";
        DataSet ds = SqlHelper.GetDataSet(sql_sel);
        if (ds != null && ds.Tables[0].Rows.Count > 0)
        {
            DataColumn dcNo = new DataColumn("No");
            ds.Tables[0].Columns.Add(dcNo);
            int i = 0;
            foreach (DataRow dr in ds.Tables[0].Rows)
            {
                dr["No"] = i+1;
                ++i;
            }
        }
        RepeaterCheck.DataSource = ds;
        RepeaterCheck.DataBind();