编译器错误消息: ASPNET: 请确保此代码文件中定义的类与“inherits”特性匹配，并且该类扩展的基类(例如 Page 或 UserControl)是正

fyb1261369646 2017-11-23 02:12:32

asp.net(C#)投票模块报错，求大佬指导
代码如下：
Manager.aspx



<%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Manager.aspx.cs" Inherits="Manager" %>



<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

    <asp:GridView ID="gvVotes" runat="server" AutoGenerateColumns="False" 

        onrowdeleting="gvVotes_RowDeleting" DataKeyNames="VoteID" 

        DataSourceID="SqlDataSource1" 

        onselectedindexchanged="gvVotes_SelectedIndexChanged" >

      <Columns>

        <asp:BoundField DataField="VoteID" HeaderText="ID" />

        <asp:BoundField DataField="VoteTitle" HeaderText="标题" />

        <asp:BoundField DataField="VoteSum" HeaderText="总投票数" />

        <asp:CheckBoxField DataField="Show" HeaderText="开放" Text="开放" />

        <asp:HyperLinkField DataNavigateUrlFields="VoteID" DataNavigateUrlFormatString="VoteEdit.aspx?voteid={0}" Text="编辑" />

        <asp:CommandField ShowDeleteButton="true" />

      </Columns>

    </asp:GridView>

</asp:Content>

Manager.aspx.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Linq.Expressions;



public partial class Manager : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }



    private BookDemo_VoteDataContext ctx = new BookDemo_VoteDataContext();//创建DataContext实例

    ///<summary>

    ///将数据绑定到gvVotes控件上

    ///</summary>



    private void DataBindToGvVotes()

    {

        gvVotes.DataSource = ctx.VoteMaster.OrderByDescending(v => v.VoteID);//数据源

        gvVotes.DataKeyNames = new string[] { "VoteID" };//主键名称

        gvVotes.DataBind();//执行绑定

    }



}

Site.master



<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="BookDemo.Vote.Site" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <asp:ContentPlaceHolder id="head" runat="server">

    </asp:ContentPlaceHolder>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">

        

        </asp:ContentPlaceHolder>

    </div>

    </form>

</body>

</html>

Site.master.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;



public partial class Site : System.Web.UI.MasterPage

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

}