The name 'GridView1' does not exist in the current context

Question

I have two files named as TimeSheet.aspx.cs and TimSheet.aspx ,code of the file are given below for your reference.

when i build the application im getting error "The name 'GridView1' does not exist in the current context" even thought i have a control with the id GridView1 and i have added the runat="server" as well.

Im not able to figure out what is causing this issue.Can any one figure whats happen here.

Thanks & Regards,

=======================================
TimeSheet.aspx.cs 
=======================================
#region Using directives
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using TSMS.Web.UI;
#endregion

public partial class TimeSheets: Page
{   
    protected void Page_Load(object sender, EventArgs e)
    {

        FormUtil.RedirectAfterUpdate(GridView1, "TimeSheets.aspx?page={0}");
        FormUtil.SetPageIndex(GridView1, "page");
        FormUtil.SetDefaultButton((Button)GridViewSearchPanel1.FindControl("cmdSearch"));
    }

    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        string urlParams = string.Format("TimeSheetId={0}", GridView1.SelectedDataKey.Values[0]);
        Response.Redirect("TimeSheetsEdit.aspx?" + urlParams, true);
    }

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) {


    }
}
=======================================================
TimeSheet.aspx
=======================================================
<%@ Page Language="C#" Theme="Default" MasterPageFile="~/MasterPages/admin.master" AutoEventWireup="true"  CodeFile="TimeSheets.aspx.cs" Inherits="TimeSheets" Title="TimeSheets List" %>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">Time Sheets List</asp:Content>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
        <data:GridViewSearchPanel ID="GridViewSearchPanel1" runat="server" GridViewControlID="GridView1" PersistenceMethod="Session" />
        <br />
        <data:EntityGridView ID="GridView1" runat="server"          
                AutoGenerateColumns="False"                 
                OnSelectedIndexChanged="GridView1_SelectedIndexChanged"
                DataSourceID="TimeSheetsDataSource"
                DataKeyNames="TimeSheetId"
                AllowMultiColumnSorting="false"
                DefaultSortColumnName="" 
                DefaultSortDirection="Ascending"    
                ExcelExportFileName="Export_TimeSheets.xls" onrowcommand="GridView1_RowCommand"         
            >
            <Columns>
                <asp:CommandField ShowSelectButton="True" ShowEditButton="True" />              
                <asp:BoundField DataField="TimeSheetId" HeaderText="Time Sheet Id" SortExpression="[TimeSheetID]" ReadOnly="True" />
                <asp:BoundField DataField="TimeSheetTitle" HeaderText="Time Sheet Title" SortExpression="[TimeSheetTitle]"  />
                <asp:BoundField DataField="StartDate" DataFormatString="{0:d}" HtmlEncode="False" HeaderText="Start Date" SortExpression="[StartDate]"  />
                <asp:BoundField DataField="EndDate" DataFormatString="{0:d}" HtmlEncode="False" HeaderText="End Date" SortExpression="[EndDate]"  />
                <asp:BoundField DataField="DateOfCreation" DataFormatString="{0:d}" HtmlEncode="False" HeaderText="Date Of Creation" SortExpression="[DateOfCreation]"  />
                <data:BoundRadioButtonField DataField="Locked" HeaderText="Locked" SortExpression="[Locked]"  />
                <asp:BoundField DataField="ReviewedBy" HeaderText="Reviewed By" SortExpression="[ReviewedBy]"  />
                <data:HyperLinkField HeaderText="Employee Id" DataNavigateUrlFormatString="EmployeesEdit.aspx?EmployeeId={0}" DataNavigateUrlFields="EmployeeId" DataContainer="EmployeeIdSource" DataTextField="LastName" />

            </Columns>
            <EmptyDataTemplate>
                <b>No TimeSheets Found!</b>
            </EmptyDataTemplate>
        </data:EntityGridView>
        <asp:GridView ID="GridView2" runat="server">
    </asp:GridView>
        <br />
        <asp:Button runat="server" ID="btnTimeSheets" OnClientClick="javascript:location.href='TimeSheetsEdit.aspx'; return false;" Text="Add New"></asp:Button>
        <data:TimeSheetsDataSource ID="TimeSheetsDataSource" runat="server"
            SelectMethod="GetPaged"
            EnablePaging="True"
            EnableSorting="True"
            EnableDeepLoad="True"
            >
            <DeepLoadProperties Method="IncludeChildren" Recursive="False">
                <Types>
                    <data:TimeSheetsProperty Name="Employees"/> 
                    <%--<data:TimeSheetsProperty Name="TimeSheetDetailsCollection" />--%>
                </Types>
            </DeepLoadProperties>
            <Parameters>
                <data:CustomParameter Name="WhereClause" Value="" ConvertEmptyStringToNull="false" />
                <data:CustomParameter Name="OrderByClause" Value="" ConvertEmptyStringToNull="false" />
                <asp:ControlParameter Name="PageIndex" ControlID="GridView1" PropertyName="PageIndex" Type="Int32" />
                <asp:ControlParameter Name="PageSize" ControlID="GridView1" PropertyName="PageSize" Type="Int32" />
                <data:CustomParameter Name="RecordCount" Value="0" Type="Int32" />
            </Parameters>
        </data:TimeSheetsDataSource>

</asp:Content>

Answer 1

Problem can be that GridView1 is not automatically added in designer.cs file. If that is case add it in designer manually.