CheckBox的全选与不全选(刷新页面效果)

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aspx文件:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="wangyi.aspx.cs" Inherits="_12._18zuoye.wangyi" %>

<!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>
</head>
<body>
    <form id="form1" runat="server">
    <div>
   
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
            DataKeyNames="sid" DataSourceID="SqlDataSource1">
            <Columns>
                <asp:TemplateField>
                    <HeaderTemplate>
                        <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True"
                            oncheckedchanged="CheckBox2_CheckedChanged" />
                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="sid" HeaderText="sid" InsertVisible="False"
                    ReadOnly="True" SortExpression="sid" />
                <asp:BoundField DataField="sname" HeaderText="sname" SortExpression="sname" />
                <asp:BoundField DataField="sex" HeaderText="sex" SortExpression="sex" />
                <asp:BoundField DataField="age" HeaderText="age" SortExpression="age" />
            </Columns>
        </asp:GridView>
        <br />
        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
            ConnectionString="<%$ ConnectionStrings:studentConnectionString %>"
            DeleteCommand="DELETE FROM [student] WHERE [sid] = @sid"
            InsertCommand="INSERT INTO [student] ([sname], [sex], [age]) VALUES (@sname, @sex, @age)"
            SelectCommand="SELECT [sid], [sname], [sex], [age] FROM [student]"
            UpdateCommand="UPDATE [student] SET [sname] = @sname, [sex] = @sex, [age] = @age WHERE [sid] = @sid">
            <DeleteParameters>
                <asp:Parameter Name="sid" Type="Int32" />
            </DeleteParameters>
            <InsertParameters>
                <asp:Parameter Name="sname" Type="String" />
                <asp:Parameter Name="sex" Type="String" />
                <asp:Parameter Name="age" Type="Byte" />
            </InsertParameters>
            <UpdateParameters>
                <asp:Parameter Name="sname" Type="String" />
                <asp:Parameter Name="sex" Type="String" />
                <asp:Parameter Name="age" Type="Byte" />
                <asp:Parameter Name="sid" Type="Int32" />
            </UpdateParameters>
        </asp:SqlDataSource>
   
    </div>
    </form>
</body>
</html>

aspx.cs文件:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace _12._18zuoye
{
    public partial class wangyi : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
        {
            CheckBox ckb = sender as CheckBox;//捉住CheckBook2
           
            foreach (GridViewRow row in this.GridView1.Rows)
            {
                if (row.RowType==DataControlRowType.DataRow)
                {
                    (row.Cells[0].FindControl("CheckBox1") as CheckBox).Checked = ckb.Checked;//把他的选择状态给那些记录中的CheckBook
                }
               
            }
        }
    }
}