ใช้กริดวิว+ส่งค่าข้ามหน้าแล้วไม่แสดง Footer หากไม่มีข้อมูลใน Table ,GrieView ShowHeader , ShowFooter When No Data

 void myGridView_RowDataBound(Object s, GridViewRowEventArgs e)
    {
        //*** PurchaseOrderID ***//
        HyperLink hplPurchaseOrderID = (HyperLink)(e.Row.FindControl("lblPurchaseOrderID"));
        if (hplPurchaseOrderID != null)
        {
            hplPurchaseOrderID.Text = DataBinder.Eval(e.Row.DataItem, "PurchaseOrderID").ToString();

            hplPurchaseOrderID.NavigateUrl = "page5-2-1.aspx?PurchaseOrderID=" + DataBinder.Eval(e.Row.DataItem, "PurchaseOrderID").ToString();
        }

strSQL = "SELECT PurchaseOrderID,PurchaseOrderDetailID,ProductID,(Select s.ProductName from Product as s where s.ProductID = c.ProductID)as ProductName,OrderQuantity,ProductPrice,ReceiveQuantity,PStockChk,DiffQuantity FROM PurchaseOrderDetail as c where PurchaseOrderID = '" + Request.QueryString["PurchaseOrderID"] + "'";