เมื่อทำการ Add ข้อมูลลง database แล้วหากเราทำการรีเฟส (F5) มันจะทำงานซ้ำคือ..

<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.SqlClient"%>
<%@ Page Language="C#" Debug="true" EnableEventValidation="true" %>
<script runat="server">
    
    SqlConnection objConn;
    SqlCommand objCmd;
    String strSQL;
   	public void Page_Load(object sender, EventArgs e)
	{
		if (Session["strUser"]==null) {
			Response.Redirect("LoginAdmin.aspx");
			Response.End();
		} else {
			this.lblStatus.Text = "Welcome [" + Session["strUser"] + "]";
            String strConnString;
            strConnString = "Server=localhost;UID=sa;PASSWORD=;database=cartoon;Max Pool Size=400;Connect Timeout=6000;";
            objConn = new SqlConnection(strConnString);
            objConn.Open();
            if (!Page.IsPostBack)
            {
                BindData();
                ViewData();
                
            }
		}
	}
    void Page_UnLoad()
    {
        objConn.Close();
        objConn = null;
    }
    
    
    void BindData()
    {
        
        String strSQL;
       // strSQL = "SELECT CusOrderID,CusOrderDetailID,SetProductID,(Select s.SetProductName from SetProduct as s where s.SetProductID = c.SetProductID)as SetProductName,Quantity,OrderDetailPrice,StockChk FROM CusOrderDetail as c where CusOrderID = '" + Request.QueryString["CusOrderID"] + "'";
        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"] + "'";
        
        SqlDataReader dtReader;
        objCmd = new SqlCommand(strSQL, objConn);
        dtReader = objCmd.ExecuteReader();
        //*** BindData to GridView ***//
        myGridView.DataSource = dtReader;
        myGridView.DataBind();
        dtReader.Close();
        dtReader = null; 
    }
    public DataTable DataTableProduct()
    {
        String strConnString = null;
        SqlDataAdapter dtAdapter = new SqlDataAdapter();
        DataTable dt = new DataTable();

        
            strConnString = "Server=localhost;UID=sa;PASSWORD=;database=cartoon;Max Pool Size=400;Connect Timeout=6000;";
            objConn = new SqlConnection(strConnString);
            objConn.Open();

        string strSQL = null;
        strSQL = "SELECT * FROM Product";

        dtAdapter = new SqlDataAdapter(strSQL, objConn);
        dtAdapter.Fill(dt);

        dtAdapter = null;

        return dt;
    }

    void ViewData()
    {
        //*** DataTable ***//
        SqlDataAdapter dtAdapter;
        DataTable dt = new DataTable();
        strSQL = "select (select COUNT(pd.PurchaseOrderID)From PurchaseOrderDetail as pd where pd.PurchaseOrderID = po.PurchaseOrderID) as myCount,(select SUM(pd.ProductPrice)from PurchaseOrderDetail as pd where  pd.PurchaseOrderID = po.PurchaseOrderID)as mySum   FROM PurchaseOrder as po where PurchaseOrderID ='" + Request.QueryString["PurchaseOrderID"] + "'";
        // Response.Write(strSQL);

        dtAdapter = new SqlDataAdapter(strSQL, objConn);
        dtAdapter.Fill(dt);

        if (dt.Rows.Count > 0)
        {
            this.lblmyCount.Text = (string)dt.Rows[0]["myCount"].ToString();
            this.lblmySum.Text = (string)dt.Rows[0]["mySum"].ToString();
     
        }
    }
    
 /*DropDownListDataTable()
    {
        SqlConnection objConn;
        SqlDataAdapter dtAdapter;
        DataTable dt = new DataTable();

        String strConnString;
        strConnString = "Server=localhost;UID=sa;PASSWORD=;database=cartoon;Max Pool Size=400;Connect Timeout=6000;";
        objConn = new SqlConnection(strConnString);
        objConn.Open();

        String strSQL;
        strSQL = "SELECT SetProductName FROM SetProduct ";

        dtAdapter = new SqlDataAdapter(strSQL, objConn);
        dtAdapter.Fill(dt);

        dtAdapter = null;
        objConn.Close();
        objConn = null;

        //*** DropDownList **
        this.txtAddProductID.DataSource = dt;
        this.txtAddProductID.DataTextField = "SetProductName";
        this.txtAddProductID.DataValueField = "SetProductName";
        this.txtAddProductID.DataBind();

        //*** Default Value ***
        //myDDL1.SelectedIndex = myDDL1.Items.IndexOf(myDDL1.Items.FindByValue("dadada"));  //*** By DataValueField ***
        //myDDL1.SelectedIndex = myDDL1.Items.IndexOf(myDDL1.Items.FindByText("Thailand"));  //*** By DataTextField **

    }*/

    
    void modEditCommand(Object sender, GridViewEditEventArgs e)
    {
        myGridView.EditIndex = e.NewEditIndex;
        myGridView.ShowFooter = false;
        BindData();
    }
   
    

    void modCancelCommand(Object sender, GridViewCancelEditEventArgs e)
    {
        myGridView.EditIndex = -1;
        myGridView.ShowFooter = true;
        BindData();
    }
    void modDeleteCommand(Object sender, GridViewDeleteEventArgs e)
    {
        strSQL = "DELETE FROM PurchaseOrderDetail WHERE PurchaseOrderDetailID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
        objCmd = new SqlCommand(strSQL, objConn);
        objCmd.ExecuteNonQuery();

        Response.Write("ลบใบสั่งรหัส " + myGridView.DataKeys[e.RowIndex].Value + " เรียบร้อยแล้ว");
        
        myGridView.EditIndex = -1;
        BindData();
    }
    void myGridView_RowCommand(Object source, GridViewCommandEventArgs e)
    {
     try
            {   
        if (e.CommandName == "Add")
        {


            //*** PurchaseOrderID ***//
            TextBox txtPurchaseOrderID = (TextBox)myGridView.FooterRow.FindControl("txtAddPurchaseOrderID");
            //*** PurchaseOrderDetailID ***//
            TextBox txtPurchaseOrderDetailID = (TextBox)myGridView.FooterRow.FindControl("txtAddPurchaseOrderDetailID");
            //*** ProductID ***//
            DropDownList txtProductID = (DropDownList)myGridView.FooterRow.FindControl("txtAddProductID");
            //*** OrderQuantity ***//
            TextBox txtOrderQuantity = (TextBox)myGridView.FooterRow.FindControl("txtAddOrderQuantity");
            //*** ReceiveQuantity ***//
            TextBox txtReceiveQuantity = (TextBox)myGridView.FooterRow.FindControl("txtAddReceiveQuantity");
            //*** ProductPrice ***//
            TextBox txtProductPrice = (TextBox)myGridView.FooterRow.FindControl("txtAddProductPrice");
            //*** PStockChk ***//
            DropDownList txtPStockChk = (DropDownList)myGridView.FooterRow.FindControl("txtAddPStockChk");






            strSQL = "INSERT INTO PurchaseOrderDetail (PurchaseOrderID,ProductID,OrderQuantity,ReceiveQuantity,DiffQuantity,ProductPrice,PStockChk) " + " VALUES ('" + txtPurchaseOrderID.Text + "','" +txtProductID.SelectedItem.Value + "','" + txtOrderQuantity.Text + "','0','" + txtOrderQuantity.Text + "','" + txtProductPrice.Text + "','" + txtPStockChk.Text + "')";

 
            
            objCmd = new SqlCommand(strSQL, objConn);
            objCmd.ExecuteNonQuery();


            Response.Write("เพิ่มใบสั่งซื้อเรียบร้อยแล้ว");
           
            
            BindData();
           
            
        }

            } catch (Exception ex)   {
         Response.Write("โปรดตรวจสอบข้อมูล " +ex.Message +  "  ให้ถูกต้อง");}
         }

    void modUpdateCommand(Object sender, GridViewUpdateEventArgs e)
    {
        //try
      //  {
            //*** PurchaseOrderDetailID ***//
            TextBox txtPurchaseOrderDetailID = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditPurchaseOrderDetailID");
            //*** ProductID***//
            DropDownList  txtProductID = (DropDownList)myGridView.Rows[e.RowIndex].FindControl("txtEditProductID");
            //*** PurchaseOrderID ***//
             TextBox txtPurchaseOrderID = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditPurchaseOrderID");
            //*** OrderQuantity ***//
            TextBox txtOrderQuantity = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditOrderQuantity");
            //*** ReceiveQuantity ***//
            TextBox txtReceiveQuantity = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditReceiveQuantity");
            //*** ProductPrice ***//
            TextBox txtProductPrice = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditProductPrice");
            //*** PStockChk ***//
            DropDownList txtPStockChk = (DropDownList)myGridView.Rows[e.RowIndex].FindControl("txtEditPStockChk");

            /*** ReceiveQuantity ***/
            Label txtDiffQuantity = (Label)myGridView.Rows[e.RowIndex].FindControl("txtEditDiffQuantity");

            
            //ครั้งแรกของครบ สั่ง10ส่ง10
            if ((txtOrderQuantity.Text == txtReceiveQuantity.Text) && (txtPStockChk.Text == "ส่งของครบถ้วน"))//จำนวนสั่งเทียบรับเท่า  และ เลือกส่งครบถ้วน
            {
                //แก้ไขราคา product
                strSQL = "UPDATE PurchaseOrderDetail SET ProductPrice  = " + txtProductPrice.Text + " where PurchaseOrderDetailID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
                Response.Write(strSQL);
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                
                //เพิ่มจำนวนลง product
                strSQL = "UPDATE Product SET Quantity = Quantity+'" + txtReceiveQuantity.Text + "' where ProductID = '" + txtProductID.SelectedItem.Value + "'";             
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                
                //อัพเดทPurDetail
                strSQL = "UPDATE PurchaseOrderDetail SET ReceiveQuantity='" + txtReceiveQuantity.Text + "',PStockChk='" + txtPStockChk.Text + "' where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                //DiffQuantity ส่วนต่าง
                 strSQL = "UPDATE PurchaseOrderDetail SET DiffQuantity = '0' where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                 
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                Response.Write("เพิ่ม " + txtProductID.SelectedItem.Value + "จำนวน" + txtReceiveQuantity .Text+ " เรียบร้อยแล้ว");
            }
            
            //รับแล้วของขาด สั่ง 10 ได้ 9
            else if ((txtOrderQuantity.Text != txtReceiveQuantity.Text) && (txtPStockChk.Text == "ส่งสินค้าไม่ครบ"))//จำนวนสั่งเทียบรับไม่เท่า  และ เป็นของที่ส่งไม่ครบ และ เลือกส่งครบถ้วน
            {
                //แก้ไขราคา product
                strSQL = "UPDATE PurchaseOrderDetail SET ProductPrice  = " + txtProductPrice.Text + " where PurchaseOrderDetailID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
                Response.Write(strSQL);
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                
                //เพิ่มจำนวนลง product (ไม่ครบเท่าที่สั่งนะ)
                strSQL = "UPDATE Product SET Quantity = Quantity+'" + txtReceiveQuantity.Text + "' where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                 //อัพเดทPurDetail
                strSQL = "UPDATE PurchaseOrderDetail SET ReceiveQuantity='" + txtReceiveQuantity.Text + "',PStockChk='" + txtPStockChk.Text + "' where ProductID = '" + txtProductID.SelectedItem.Value +"'";
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
              //  Response.Write("เพิ่ม " + txtProductID.SelectedItem.Value + "จำนวน" + txtReceiveQuantity.Text + " เรียบร้อยแล้ว");
                //
                strSQL = "UPDATE PurchaseOrderDetail SET DiffQuantity=0+" + txtOrderQuantity.Text + "-" + txtReceiveQuantity.Text + " where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                Response.Write("เพิ่ม " + txtProductID.SelectedItem.Value + "จำนวน" + txtReceiveQuantity.Text + " เรียบร้อยแล้ว");
            }    
            
            //ครั้งสองของครบ                                                                                                                                                                                    
            else if ((txtOrderQuantity.Text != txtReceiveQuantity.Text) && (txtPStockChk.Text == "ส่งของครบถ้วน")&&(txtDiffQuantity.Text !="0"))//จำนวนสั่งเทียบรับเท่า  และ เลือกส่งครบถ้วน และเช๊คอะไรซํกอย่าง
            {
                //แก้ไขราคา product
                strSQL = "UPDATE PurchaseOrderDetail SET ProductPrice  = " + txtProductPrice.Text + " where PurchaseOrderDetailID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
                Response.Write(strSQL);
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                
                //เพิ่มจำนวนลง product                                     
                strSQL = "UPDATE Product SET Quantity = Quantity+" + txtReceiveQuantity.Text + " where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                Response.Write(strSQL);
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
            
                //อัพเดทPurDetail
                strSQL = "UPDATE PurchaseOrderDetail SET ReceiveQuantity='" + txtOrderQuantity.Text + "',PStockChk='" + txtPStockChk.Text + "' where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
              //  Response.Write("เพิ่ม " + txtProductID.Text + "จำนวน" + txtReceiveQuantity.Text + " เรียบร้อยแล้ว");
                //
                strSQL = "UPDATE PurchaseOrderDetail SET DiffQuantity= 0 where ProductID = '" + txtProductID.SelectedItem.Value + "'";
                objCmd = new SqlCommand(strSQL, objConn);
                objCmd.ExecuteNonQuery();
                Response.Write("เพิ่มสินค้า " + txtProductID.Text + "จำนวน" + txtReceiveQuantity.Text + " เรียบร้อยแล้ว");
                
            }
            
       //}catch(Exception ex)
          // {
       //     Response.Write(ex.Message+"Update");
    //   }
    //    
        myGridView.EditIndex = -1;
        myGridView.ShowFooter = true;
        BindData();
    }

    void myGridView_RowDataBound(Object source, GridViewRowEventArgs e)
    {
        // Footer
        if (e.Row.RowType == DataControlRowType.Footer)      {
            
            DropDownList txtProductID = (DropDownList)e.Row.FindControl("txtAddProductID");
            if ((txtProductID != null))
            {
                txtProductID.DataSource = (DataTable)DataTableProduct();
                txtProductID.DataTextField = "ProductName";
                txtProductID.DataValueField = "ProductID";
                txtProductID.DataBind();
            }
        }

        //edit
        if (e.Row.RowType == DataControlRowType.DataRow)
        {


            //*** PurchaseOrderID ***//
            Label lblPurchaseOrderID = (Label)(e.Row.FindControl("lblPurchaseOrderID"));
            if (lblPurchaseOrderID != null)
            {
                lblPurchaseOrderID.Text = DataBinder.Eval(e.Row.DataItem, "PurchaseOrderID").ToString();
            }
            //*** PurchaseOrderDetailID ***//
            Label lblPurchaseOrderDetailID = (Label)(e.Row.FindControl("lblPurchaseOrderDetailID"));
            if (lblPurchaseOrderDetailID != null)
            {
                lblPurchaseOrderDetailID.Text = DataBinder.Eval(e.Row.DataItem, "PurchaseOrderDetailID").ToString();
            }
            //*** ProductID ***//
            DropDownList txtProductID = (DropDownList)(e.Row.FindControl("txtEditProductID"));
            if ((txtProductID != null))
            {
                txtProductID.DataSource = (DataTable)DataTableProduct();
                txtProductID.DataTextField = "ProductName";
                txtProductID.DataValueField = "ProductID";
                txtProductID.DataBind();
                txtProductID.SelectedIndex = txtProductID.Items.IndexOf(txtProductID.Items.FindByValue((string)DataBinder.Eval(e.Row.DataItem, "ProductID")));

            }
            //*** ProductName***//
            Label lblProductName = (Label)(e.Row.FindControl("lblProductName"));
            if (lblProductName != null)
            {
                lblProductName.Text = DataBinder.Eval(e.Row.DataItem, "ProductName").ToString();
            }
            //*** OrderQuantity***//
            Label lblOrderQuantity = (Label)(e.Row.FindControl("lblOrderQuantity"));
            if (lblOrderQuantity != null)
            {
                lblOrderQuantity.Text = DataBinder.Eval(e.Row.DataItem, "OrderQuantity").ToString();

            }


            //*** ReceiveQuantity***//
            Label lblReceiveQuantity = (Label)(e.Row.FindControl("lblReceiveQuantity"));
            if (lblReceiveQuantity != null)
            {
                lblReceiveQuantity.Text = DataBinder.Eval(e.Row.DataItem, "ReceiveQuantity").ToString();
            }

            //***  DiffQuantity***//
            Label lblDiffQuantity = (Label)(e.Row.FindControl("lblDiffQuantity"));
            if (lblDiffQuantity != null)
            {
                lblDiffQuantity.Text = DataBinder.Eval(e.Row.DataItem, "DiffQuantity").ToString();
            }
            //*** ProductPrice***//
            Label lblProductPrice = (Label)(e.Row.FindControl("lblProductPrice"));
            if (lblProductPrice != null)
            {
                lblProductPrice.Text = DataBinder.Eval(e.Row.DataItem, "ProductPrice").ToString();
            }

            //*** lblPStockChk***//
            Label lblPStockChk = (Label)(e.Row.FindControl("lblPStockChk"));
            if (lblPStockChk != null)
            {
                lblPStockChk.Text = DataBinder.Eval(e.Row.DataItem, "PStockChk").ToString();
            }


        }
    }



    protected void btnSave_Click(object sender, EventArgs e)
    {
        if (this.RadioButton1.Checked == true)
        {
            String strSQL;
            strSQL = "UPDATE PurchaseOrder SET PaymentStatusType = 'รับสินค้าครบถ้วนแล้ว' where PurchaseOrderID = '" + Request.QueryString["PurchaseOrderID"] + "' ";
            objCmd = new SqlCommand(strSQL, objConn);
            objCmd.ExecuteNonQuery();
            lblstat.Text = "แก้ไขสถานะ รับสินค้าครบ เรียบร้อย";
        }
        if (this.RadioButton2.Checked == true)
        {
            String strSQL;
            strSQL = "UPDATE PurchaseOrder SET PaymentStatusType = 'รอการจัดส่ง' where PurchaseOrderID = '" + Request.QueryString["PurchaseOrderID"] + "' ";
            objCmd = new SqlCommand(strSQL, objConn);
            objCmd.ExecuteNonQuery();
            lblstat.Text = "แก้ไขสถานะ รอการจัดส่ง เรียบร้อย";
        }


    }

</script>

<html>
<head id="Head1" runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=windows-874" />
<title>Cartoon2ndHand</title>
<style type="text/css">

body {
	background-image: url(images/bg.gif);
	background-repeat: repeat;
}
a {
	font-size: 10px;
}
    .style9
    {
        height: 31px;
    }
    .style10
    {
        height: 26px;
    }
.style16 {font-size: 18px}
.style26 {font-family: "Microsoft Sans Serif"; font-size: 18px; }
.style30 {font-size: 24px}
-->
</style></head>
<body><form id="form1" runat="server">

<table width="961" height="1281" border="0" align="center">
  <tr>
    <td width="1024" height="1277" valign="top"><table width="955" height="1275" border="0">
      <tr>
        <td width="949" height="132"><div align="center"><img src="images/header edit.jpg" width="934" height="126" /></div></td>
      </tr>
      <tr>
        <td class="style10"><table height="35" border="0" align="center" 
                style="width: 949px">
          <tr align="center">
            <td width="173" class="style9"><a href="default.aspx"><img src="images/Tab home.jpg" width="150" height="30" border="0" /></a></td>
            <td width="150" class="style9"><a href="page1.aspx"><img src="images/Tab product light.jpg" width="150" height="30" border="0"></a></td>
            <td width="150" class="style9"><a href="page2.aspx"><img src="images/Tab Buy the book..jpg" width="150" height="30" border="0"></a></td>
            <td width="150" class="style9"><a href="page3.aspx"><img src="images/Tab How to order.jpg" width="150" height="30" border="0"></a></td>
            <td width="150" class="style9"><a href="page4.aspx"><img src="images/Tab Contact us.jpg" width="150" height="30" border="0"></a></td>
            <td width="222" class="style9"><asp:HyperLink id="hplLogout" NavigateURL="Logout.aspx" runat="server"><img src="images/logout.jpg" width="150" height="30"></asp:HyperLink></td>
          </tr>
        </table></td>
      </tr>
      <tr>
        <td height="1097" valign="top"><table width="949" height="1095" border="0">
          <tr>
            <td width="180" height="1091" valign="top"><table width="180" height="500" border="1" align="left" cellpadding="0" cellspacing="0">
              <tr>
                <td width="204">
                                  &nbsp;&nbsp; <asp:Label ID="lblStatus" runat="server" Text="Label"></asp:Label>
                  <div align="center"></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-1.aspx" class="style16">ดูรายการสินค้าออก</a></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-2.aspx" class="style16">ดูรายการสินค้าเข้า</a></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-3.aspx" class="style16">แก้ไขข้อมูลสินค้า</a></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-4.aspx" class="style16">จัดการรูปสินค้า</a></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-5.aspx" class="style16">เพิ่มสินค้าเข้า</a></div></td>
              </tr>
              <tr>
                <td><div align="center" class="style26"><a href="page5-5.aspx" class="style16">ออกรายงาน</a></div></td>
              </tr>
              
            </table></td>
            <td width="759" valign="top"><p style="text-align: right"><img src="images/managepurchase.jpg" width="700" height="35"><br />
              <br />
                    
                             &nbsp;&nbsp;&nbsp;&nbsp;      
                        
                    

                     <asp:HiddenField id="HiddenField1" runat="Server"></asp:HiddenField>
                     <asp:HiddenField id="HiddenField2" runat="Server"></asp:HiddenField>
                    <asp:GridView id="myGridView" 
                    runat="server" AutoGenerateColumns="False" 
	ShowFooter="True" 
	DataKeyNames="PurchaseOrderDetailID"
	OnRowEditing="modEditCommand"
	OnRowCancelingEdit="modCancelCommand"
	OnRowDeleting="modDeleteCommand"
	OnRowUpdating="modUpdateCommand"
	onRowDataBound="myGridView_RowDataBound"
	OnRowCommand="myGridView_RowCommand" Height="59px" Width="530px" CaptionAlign="Right">

	                    <RowStyle Font-Size="Medium" HorizontalAlign="Right" />

	<Columns>

	<asp:TemplateField HeaderText="รหัสใบสั่งซื้อ">

		<ItemTemplate>
			<asp:Label id="lblPurchaseOrderID" runat="server" ></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:TextBox id="txtEditPurchaseOrderID" size="12" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.PurchaseOrderID") %>'></asp:TextBox>
		</EditItemTemplate>
		<FooterTemplate>
			<asp:TextBox id="txtAddPurchaseOrderID" size="12" runat="server" ></asp:TextBox>
		</FooterTemplate>
	</asp:TemplateField>

	<asp:TemplateField HeaderText="รหัสรายละเอียดการสั่งซื้อ">
		<ItemTemplate>
			<asp:Label id="lblPurchaseOrderDetailID" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:TextBox id="txtEditPurchaseOrderDetailID" size="12" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.PurchaseOrderDetailID") %>'></asp:TextBox>
		</EditItemTemplate>
		<FooterTemplate>
			<asp:TextBox id="txtAddPurchaseOrderDetailID" size="12" runat="server" ReadOnly="true" BackColor="GrayText"></asp:TextBox>
		</FooterTemplate>
	</asp:TemplateField>

	<asp:TemplateField HeaderText="รหัสสินค้า">
		<ItemTemplate>
			<asp:Label id="lblProductID" runat="server"   Text='<%# DataBinder.Eval(Container, "DataItem.ProductID") %>'></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
				<asp:DropDownList ID="txtEditProductID" runat="server"> </asp:DropDownList>
		</EditItemTemplate>
		<FooterTemplate>
			<asp:DropDownList ID="txtAddProductID" runat="server" > </asp:DropDownList>
		</FooterTemplate>
	</asp:TemplateField>

<asp:TemplateField HeaderText="ชื่อสินค้า">
		<ItemTemplate>
			<asp:Label id="lblProductName" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:TextBox id="txtEditProductName" size="30" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.ProductName") %>'></asp:TextBox>
		</EditItemTemplate>
		<FooterTemplate>
			<asp:TextBox id="txtAddProductName" size="30" runat="server" ReadOnly="true" BackColor="GrayText"></asp:TextBox>
		</FooterTemplate>
	</asp:TemplateField>


	<asp:TemplateField HeaderText="จำนวนสินค้าที่สั่ง">
		<ItemTemplate>
			<asp:Label id="lblOrderQuantity" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:TextBox id="txtEditOrderQuantity" size="10" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.OrderQuantity") %>'></asp:TextBox><br />
		</EditItemTemplate>
		<FooterTemplate>
			<asp:TextBox id="txtAddOrderQuantity" size="10" runat="server" ></asp:TextBox>
		</FooterTemplate>
	</asp:TemplateField>
	
	
	<asp:TemplateField HeaderText="จำนวนสินค้าที่ได้รับ">
		<ItemTemplate>
			<asp:Label id="lblReceiveQuantity" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
<asp:TextBox id="txtEditReceiveQuantity" size="10" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.ReceiveQuantity") %>'></asp:TextBox>
		</EditItemTemplate>
		<FooterTemplate>
				<asp:TextBox  id="txtAddPurchaseOrderDetailID1" size="12" runat="server" ReadOnly="true" BackColor="GrayText"></asp:TextBox>
      		</FooterTemplate>
	</asp:TemplateField>
	
	<asp:TemplateField HeaderText="สินค้าตกค้างส่งไม่ครบ"  >
		<ItemTemplate>
	        <asp:Label id="lblDiffQuantity" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:Label id="txtEditDiffQuantity" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.DiffQuantity") %>'></asp:Label>
		</EditItemTemplate>
		<FooterTemplate>
        <asp:Label id="txtAddDiffQuantity" runat="server"></asp:Label>
       <asp:Button id="btnAdd" runat="server" Text="เพิ่มรายการสั่งซื้อใหม่" size="40" CommandName="Add" ></asp:Button>
		</FooterTemplate>
	</asp:TemplateField>

	
	<asp:TemplateField HeaderText="ราคา">
		<ItemTemplate>
			<asp:Label id="lblProductPrice" runat="server"></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
			<asp:TextBox id="txtEditProductPrice" size="10" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.ProductPrice") %>'></asp:TextBox><br />
		</EditItemTemplate>
		<FooterTemplate>
			<asp:TextBox id="txtAddProductPrice" size="10" runat="server" ></asp:TextBox>
		</FooterTemplate>
	</asp:TemplateField>


	 <asp:TemplateField HeaderText="สถานะสินค้า" >
		<ItemTemplate>
			<asp:Label id="lblPStockChk" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.PStockChk") %>'></asp:Label>
		</ItemTemplate>
		<EditItemTemplate>
						<asp:dropdownlist id="txtEditPStockChk" style="margin-left: 1px" Width="105px" runat="server"  >
                              <asp:ListItem></asp:ListItem>
                              <asp:ListItem>ส่งของครบถ้วน</asp:ListItem>
                              <asp:ListItem>ส่งสินค้าไม่ครบ</asp:ListItem>
			</asp:dropdownlist>
		</EditItemTemplate>
		<FooterTemplate>
		<asp:dropdownlist id="txtAddPStockChk" style="margin-left: 1px" Width="105px" runat="server"  >
                                 <asp:ListItem>รอการส่งสินค้า</asp:ListItem>
         </asp:dropdownlist>
         
		</FooterTemplate>
	</asp:TemplateField>
	
	

	<asp:CommandField ControlStyle-Font-Size="Large" ShowEditButton="True" CancelText="Cancel" DeleteText="Delete" EditText="Edit" UpdateText="Update" HeaderText="Modify"  />
	<asp:CommandField ControlStyle-Font-Size="Large" ShowDeleteButton="True" HeaderText="Delete" />
	</Columns>
                    <FooterStyle BackColor="#6699FF" HorizontalAlign="Right" />
                        <PagerStyle Font-Size="Small" />
                    <HeaderStyle BackColor="#3399FF" />
                    <AlternatingRowStyle BackColor="#99CCFF" Font-Size="Medium" 
                            HorizontalAlign="Right" />
</asp:GridView>
                <br />
&nbsp;
                <br />
                <br />
                
                  <table width="733" height="80" border="1" cellpadding="0" cellspacing="0">
                    <tr>
                      <td width="534" align="right" bgcolor="#FF9933"><div align="right">จำนวน (รายการ)</div></td>
                      <td width="193" align="right" bgcolor="#FF9933"><div align="right"><span class="style30"><asp:Label id="lblmyCount" runat="server"></asp:Label></span></div></td>
                    </tr>
                    <tr>
                      <td align="right" bgcolor="#FFFF99"><div align="right">ราคารวม(บาท)</div></td>
                      <td align="right" bgcolor="#FFFF99"><div align="right"><span class="style30"><asp:Label id="lblmySum" runat="server"></asp:Label></span></div></td>
                    </tr>
                  </table>
                
                <br />
                            
          <asp:RadioButton id="RadioButton1" runat="server" text="รับสินค้าแล้ว" 
                    GroupName="Group1" ></asp:RadioButton>
        &nbsp;<asp:RadioButton id="RadioButton2" runat="server" text="รอการจัดส่ง" 
                    AutoPostBack="true" GroupName="Group1"  Checked="true" ></asp:RadioButton>
                            &nbsp;<asp:Button ID="btnSave" runat="server" Height="26px" onclick="btnSave_Click" 
                                style="height: 26px" Text="บันทึก" Width="49px" />
                               <br />
                </p>       
                  <p><br />
  &nbsp;&nbsp;
                    <asp:Label ID="lblstat" runat="server" ></asp:Label>
                    <br />
                  </p></td>
          </tr>
        </table></td>
      </tr>
    </table></td>
  </tr>
</table>
</form>
</body>
</html>