GridView跨页面多选

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="GridView跨页多选._Default" %>

<!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>GridView跨页面多选</title>
    <script type="text/javascript">
      //这是使用JavaScript
    function Check(ck)
    {
        if(ck.checked)
        {
            form1.Hidden1.value += ","+ck.value;
        }
        else
        {
            form1.Hidden1.value = form1.Hidden1.value.replace(","+ck.value,"");
        }
    }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
   
        <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
            AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333"
            GridLines="None" Height="184px"
            OnPageIndexChanging="GridView1_PageIndexChanging"
            OnRowDataBound="GridView1_RowDataBound" PageSize="2" Width="515px">
            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <Columns>
                <asp:TemplateField HeaderText="选择">
                    <ItemStyle HorizontalAlign="Center" />
                    <ItemTemplate>
                        <input ID="ltName" runat="server" name="ltName" onclick="Check(this)"
                            type="checkbox" value='<%# Eval("name") %>' />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="id" HeaderText="学生ID">
                    <ItemStyle HorizontalAlign="Center" />
                </asp:BoundField>
                <asp:BoundField DataField="name" HeaderText="学生姓名">
                    <ItemStyle HorizontalAlign="Center" />
                </asp:BoundField>
                <asp:BoundField DataField="sex" HeaderText="性别">
                    <ItemStyle HorizontalAlign="Center" />
                </asp:BoundField>
                <asp:BoundField DataField="times" HeaderText="入学时间">
                    <ItemStyle HorizontalAlign="Center" />
                </asp:BoundField>
            </Columns>
            <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
            <EditRowStyle BackColor="#999999" />
            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        </asp:GridView>
        <br />
        <asp:Button ID="btnGet" runat="server" Text="获取选择内容" onclick="btnGet_Click" />
        <br />
        <asp:Label ID="lbShow" runat="server"></asp:Label>
        <br />
        <input id="Hidden1" type="hidden"  runat="server"/>
    </div>
    </form>
</body>
</html>
后台

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

namespace GridView跨页多选
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                Bind();
            }
        }
        protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            this.GridView1.PageIndex = e.NewPageIndex;
            Bind();
        }

        protected void btnGet_Click(object sender, EventArgs e)
        {
            lbShow.Text = Hidden1.Value.Replace(",", "<li>");
        }
        protected void Bind()
        {
            SqlConnection con = new SqlConnection("server=.;uid=sa;pwd=123456;database=Test;");
            SqlDataAdapter da = new SqlDataAdapter("select * from students", con);
            DataSet ds = new DataSet();
            da.Fill(ds, "students");

            this.GridView1.DataSource = ds.Tables["students"].DefaultView;
            this.GridView1.DataBind();

        }
        //保证翻页时复选框仍然选中
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                if (Hidden1.Value.IndexOf(e.Row.Cells[2].Text) >= 0)
                {
                    HtmlInputCheckBox box = (HtmlInputCheckBox)(e.Row.Cells[0].FindControl("ltName"));
                    box.Checked = true;
                }
            }
        }
    }
}

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