'gdPartReg_RowDataBound' is not a member of 'ASP.webform3_aspx'

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VB

Gridview

I am quite confuse why my code does not accept any gridview properties like

OnRowDataBound = "gdPartReg_RowDataBound"
OnRowDeleting = "gdPartReg_RowDeleting"
OnRowCreated = "gdPartReg_RowCreated"

and etc..

How to solve this?

This is my page directive :

<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/Site1.Master" CodeBehind="InternalRegis.aspx.vb" Inherits="QFMSWeb.InternalRegis" %>

This is header of code behind

Public Class InternalRegis
    Inherits System.Web.UI.Page

I have changed

Inherits="QFMSWeb.InternalRegis"

to

Inherits="InternalRegis"

but it cannot load the page. For your info, InternalRegis.aspx is in Forms folder. Does it has anything to do with this?

Edit ----

This is gridview code:

<asp:GridView ID="gdShop" runat="server" AutoGenerateColumns="False"
                               BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px"
                               CellPadding="4" CellSpacing="2" ForeColor="Black" Width="430px" OnRowCreated="gdPartReg_RowCreated" OnRowDeleted = "gdPartReg_RowDeleting">
                               <columns>
                                   <asp:TemplateField>
                                       <itemtemplate>
                                           <asp:CheckBox ID="cbSH" runat="server" />
                                       </itemtemplate>

                                   <asp:BoundField DataField="DEPT" HeaderText="Dept" />
                                   <asp:BoundField DataField="EMPID_T" HeaderText="Emp. ID" />
                                   <asp:BoundField DataField="NAME_T" HeaderText="Name" />
                               </columns>
                               <footerstyle backcolor="#CCCCCC" />
                               <HeaderStyle BackColor="Black" BorderColor="White" Font-Bold="True"
                                   ForeColor="White" HorizontalAlign="Center" VerticalAlign="Middle" Wrap="True" />
                               <pagerstyle backcolor="#CCCCCC" forecolor="Black" horizontalalign="Left" />
                               <rowstyle backcolor="White" />
                               <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
                               <sortedascendingcellstyle backcolor="#F1F1F1" />
                               <sortedascendingheaderstyle backcolor="#808080" />
                               <sorteddescendingcellstyle backcolor="#CAC9C9" />
                               <sorteddescendingheaderstyle backcolor="#383838" />