asp.net ช่วยตรวจสอบโค้ดไห้หน่อยครับว่าผิดตรงไหนลบข้อมูลจาก base Mysql ไม่ได้

<div style="height:500px">
    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
        AutoGenerateColumns="False" BackColor="White" BorderColor="#CCCCCC" 
        BorderStyle="None" BorderWidth="1px" CellPadding="3" DataKeyNames="รหัสผู้ค้า" 
        DataSourceID="SqlDataSource1">
        <Columns>
            <asp:CommandField ButtonType="Button" CancelText="ยกเลิก" DeleteText="ลบ" 
                EditText="แก้ไข" InsertText="เพิ่ม" ShowDeleteButton="True" 
                ShowEditButton="True" ShowSelectButton="True" />
            <asp:BoundField DataField="รหัสผู้ค้า" HeaderText="รหัสผู้ค้า" 
                InsertVisible="False" ReadOnly="True" SortExpression="รหัสผู้ค้า" />
            <asp:BoundField DataField="ชื่อบริษัท" HeaderText="ชื่อบริษัท" 
                SortExpression="ชื่อบริษัท" />
            <asp:BoundField DataField="รหัสบริษัท" HeaderText="รหัสบริษัท" 
                SortExpression="รหัสบริษัท" />
            <asp:BoundField DataField="วันที่สั่งซื้อ" HeaderText="วันที่สั่งซื้อ" 
                SortExpression="วันที่สั่งซื้อ" />
            <asp:BoundField DataField="รายละเอียดสินค้า" HeaderText="รายละเอียดสินค้า" 
                SortExpression="รายละเอียดสินค้า" />
            <asp:BoundField DataField="จำนวน" HeaderText="จำนวน" SortExpression="จำนวน" />
            <asp:BoundField DataField="ราคา" HeaderText="ราคา" SortExpression="ราคา" />
        </Columns>
        <EmptyDataTemplate>
            ไม่มีข้อมูลข้อมูล
        </EmptyDataTemplate>
        <FooterStyle BackColor="White" ForeColor="#000066" />
        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
        <RowStyle ForeColor="#000066" />
        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
        <SortedAscendingCellStyle BackColor="#F1F1F1" />
        <SortedAscendingHeaderStyle BackColor="#007DBB" />
        <SortedDescendingCellStyle BackColor="#CAC9C9" />
        <SortedDescendingHeaderStyle BackColor="#00547E" />
    </asp:GridView>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
        ConflictDetection="CompareAllValues" 
        ConnectionString="<%$ ConnectionStrings:EcommerceConnectionString %>" 
        DeleteCommand="DELETE FROM [suply] WHERE [spid] = @original_spid AND (([compnayname] = @original_compnayname) OR ([compnayname] IS NULL AND @original_compnayname IS NULL)) AND (([companycode] = @original_companycode) OR ([companycode] IS NULL AND @original_companycode IS NULL)) AND (([orderdate] = @original_orderdate) OR ([orderdate] IS NULL AND @original_orderdate IS NULL)) AND (([orderdetail] = @original_orderdetail) OR ([orderdetail] IS NULL AND @original_orderdetail IS NULL)) AND (([orderamount] = @original_orderamount) OR ([orderamount] IS NULL AND @original_orderamount IS NULL)) AND (([orderprice] = @original_orderprice) OR ([orderprice] IS NULL AND @original_orderprice IS NULL))" 
        InsertCommand="INSERT INTO [suply] ([compnayname], [companycode], [orderdate], [orderdetail], [orderamount], [orderprice]) VALUES (@compnayname, @companycode, @orderdate, @orderdetail, @orderamount, @orderprice)" 
        OldValuesParameterFormatString="original_{0}" 
        SelectCommand="SELECT [spid]AS รหัสผู้ค้า, [compnayname] AS ชื่อบริษัท, [companycode] AS รหัสบริษัท, [orderdate] AS วันที่สั่งซื้อ, [orderdetail] AS รายละเอียดสินค้า, [orderamount] AS จำนวน, [orderprice] AS ราคา FROM [suply]" 
        UpdateCommand="UPDATE [suply] SET [compnayname] = @compnayname, [companycode] = @companycode, [orderdate] = @orderdate, [orderdetail] = @orderdetail, [orderamount] = @orderamount, [orderprice] = @orderprice WHERE [spid] = @original_spid AND (([compnayname] = @original_compnayname) OR ([compnayname] IS NULL AND @original_compnayname IS NULL)) AND (([companycode] = @original_companycode) OR ([companycode] IS NULL AND @original_companycode IS NULL)) AND (([orderdate] = @original_orderdate) OR ([orderdate] IS NULL AND @original_orderdate IS NULL)) AND (([orderdetail] = @original_orderdetail) OR ([orderdetail] IS NULL AND @original_orderdetail IS NULL)) AND (([orderamount] = @original_orderamount) OR ([orderamount] IS NULL AND @original_orderamount IS NULL)) AND (([orderprice] = @original_orderprice) OR ([orderprice] IS NULL AND @original_orderprice IS NULL))">
        <DeleteParameters>
            <asp:Parameter Name="original_spid" Type="Int32" />
            <asp:Parameter Name="original_compnayname" Type="String" />
            <asp:Parameter Name="original_companycode" Type="String" />
            <asp:Parameter DbType="Date" Name="original_orderdate" />
            <asp:Parameter Name="original_orderdetail" Type="String" />
            <asp:Parameter Name="original_orderamount" Type="Int32" />
            <asp:Parameter Name="original_orderprice" Type="Int32" />
        </DeleteParameters>
        <InsertParameters>
            <asp:Parameter Name="compnayname" Type="String" />
            <asp:Parameter Name="companycode" Type="String" />
            <asp:Parameter DbType="Date" Name="orderdate" />
            <asp:Parameter Name="orderdetail" Type="String" />
            <asp:Parameter Name="orderamount" Type="Int32" />
            <asp:Parameter Name="orderprice" Type="Int32" />
        </InsertParameters>
        <UpdateParameters>
            <asp:Parameter Name="compnayname" Type="String" />
            <asp:Parameter Name="companycode" Type="String" />
            <asp:Parameter DbType="Date" Name="orderdate" />
            <asp:Parameter Name="orderdetail" Type="String" />
            <asp:Parameter Name="orderamount" Type="Int32" />
            <asp:Parameter Name="orderprice" Type="Int32" />
            <asp:Parameter Name="original_spid" Type="Int32" />
            <asp:Parameter Name="original_compnayname" Type="String" />
            <asp:Parameter Name="original_companycode" Type="String" />
            <asp:Parameter DbType="Date" Name="original_orderdate" />
            <asp:Parameter Name="original_orderdetail" Type="String" />
            <asp:Parameter Name="original_orderamount" Type="Int32" />
            <asp:Parameter Name="original_orderprice" Type="Int32" />
        </UpdateParameters>
    </asp:SqlDataSource>
        <asp:HyperLink ID="HyperLink1" runat="server" 
            NavigateUrl="~/ReportSuplyShow.aspx" Target="_blank">พิมพ์รายงานการสั่งซื้อ</asp:HyperLink>
   </div>
   <div>
    <asp:FormView ID="FormView1" runat="server" DataKeyNames="spid" 
        DataSourceID="SqlDataSource2" DefaultMode="Insert">
        <EditItemTemplate>
            spid:
            <asp:Label ID="spidLabel1" runat="server" Text='<%# Eval("spid") %>' />
            <br />
            companycode:
            <asp:TextBox ID="companycodeTextBox" runat="server" 
                Text='<%# Bind("companycode") %>' />
            <br />
            compnayname:
            <asp:TextBox ID="compnaynameTextBox" runat="server" 
                Text='<%# Bind("compnayname") %>' />
            <br />
            orderdate:
            <asp:TextBox ID="orderdateTextBox" runat="server" 
                Text='<%# Bind("orderdate") %>' />
            <br />
            orderdetail:
            <asp:TextBox ID="orderdetailTextBox" runat="server" 
                Text='<%# Bind("orderdetail") %>' />
            <br />
            orderamount:
            <asp:TextBox ID="orderamountTextBox" runat="server" 
                Text='<%# Bind("orderamount") %>' />
            <br />
            orderprice:
            <asp:TextBox ID="orderpriceTextBox" runat="server" 
                Text='<%# Bind("orderprice") %>' />
            <br />
            <asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True" 
                CommandName="Update" Text="Update" />
            &nbsp;<asp:LinkButton ID="UpdateCancelButton" runat="server" 
                CausesValidation="False" CommandName="Cancel" Text="Cancel" />
        </EditItemTemplate>
        <InsertItemTemplate>
            รหัสบริษัท:
            <asp:TextBox ID="companycodeTextBox" runat="server" 
                Text='<%# Bind("companycode") %>' />
            <br />
            ชื่อบริษัท:
            <asp:TextBox ID="compnaynameTextBox" runat="server" 
                Text='<%# Bind("compnayname") %>' />
            <br />
            วันที่สั่งซื้อ:
            <asp:TextBox ID="orderdateTextBox" runat="server" 
                Text='<%# Bind("orderdate") %>' />
            &nbsp;2012/2/29<br />รายละเอียด:
            <asp:TextBox ID="orderdetailTextBox" runat="server" 
                Text='<%# Bind("orderdetail") %>' />
            <br />
            จำนวน:
            <asp:TextBox ID="orderamountTextBox" runat="server" 
                Text='<%# Bind("orderamount") %>' />
            <br />
            ราคา:
            <asp:TextBox ID="orderpriceTextBox" runat="server" 
                Text='<%# Bind("orderprice") %>' />
            <br />
            <asp:LinkButton ID="InsertButton" runat="server" CausesValidation="True" 
                CommandName="Insert" Text="Insert" />
            &nbsp;<asp:LinkButton ID="InsertCancelButton" runat="server" 
                CausesValidation="False" CommandName="Cancel" Text="Cancel" />
        </InsertItemTemplate>
        <ItemTemplate>
            spid:
            <asp:Label ID="spidLabel" runat="server" Text='<%# Eval("spid") %>' />
            <br />
            companycode:
            <asp:Label ID="companycodeLabel" runat="server" 
                Text='<%# Bind("companycode") %>' />
            <br />
            compnayname:
            <asp:Label ID="compnaynameLabel" runat="server" 
                Text='<%# Bind("compnayname") %>' />
            <br />
            orderdate:
            <asp:Label ID="orderdateLabel" runat="server" Text='<%# Bind("orderdate") %>' />
            <br />
            orderdetail:
            <asp:Label ID="orderdetailLabel" runat="server" 
                Text='<%# Bind("orderdetail") %>' />
            <br />
            orderamount:
            <asp:Label ID="orderamountLabel" runat="server" 
                Text='<%# Bind("orderamount") %>' />
            <br />
            orderprice:
            <asp:Label ID="orderpriceLabel" runat="server" 
                Text='<%# Bind("orderprice") %>' />
            <br />
            <asp:LinkButton ID="EditButton" runat="server" CausesValidation="False" 
                CommandName="Edit" Text="Edit" />
            &nbsp;<asp:LinkButton ID="DeleteButton" runat="server" CausesValidation="False" 
                CommandName="Delete" Text="Delete" />
            &nbsp;<asp:LinkButton ID="NewButton" runat="server" CausesValidation="False" 
                CommandName="New" Text="New" />
        </ItemTemplate>
    </asp:FormView>
    <asp:SqlDataSource ID="SqlDataSource2" runat="server" 
        ConnectionString="<%$ ConnectionStrings:EcommerceConnectionString %>" 
        DeleteCommand="DELETE FROM [suply] WHERE [spid] = @spid" 
        InsertCommand="INSERT INTO [suply] ([companycode], [compnayname], [orderdate], [orderdetail], [orderamount], [orderprice]) VALUES (@companycode, @compnayname, @orderdate, @orderdetail, @orderamount, @orderprice)" 
        SelectCommand="SELECT * FROM [suply]" 
        UpdateCommand="UPDATE [suply] SET [companycode] = @companycode, [compnayname] = @compnayname, [orderdate] = @orderdate, [orderdetail] = @orderdetail, [orderamount] = @orderamount, [orderprice] = @orderprice WHERE [spid] = @spid">
        <DeleteParameters>
            <asp:Parameter Name="spid" Type="Int32" />
        </DeleteParameters>
        <InsertParameters>
            <asp:Parameter Name="companycode" Type="String" />
            <asp:Parameter Name="compnayname" Type="String" />
            <asp:Parameter DbType="Date" Name="orderdate" />
            <asp:Parameter Name="orderdetail" Type="String" />
            <asp:Parameter Name="orderamount" Type="Int32" />
            <asp:Parameter Name="orderprice" Type="Int32" />
        </InsertParameters>
        <UpdateParameters>
            <asp:Parameter Name="companycode" Type="String" />
            <asp:Parameter Name="compnayname" Type="String" />
            <asp:Parameter DbType="Date" Name="orderdate" />
            <asp:Parameter Name="orderdetail" Type="String" />
            <asp:Parameter Name="orderamount" Type="Int32" />
            <asp:Parameter Name="orderprice" Type="Int32" />
            <asp:Parameter Name="spid" Type="Int32" />
        </UpdateParameters>
    </asp:SqlDataSource>
   </div>
    <br />
    <br />