web项目【3】

前端代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!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>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div id = "mydiv">
    <div>
        <asp:CheckBox ID="CheckBox1" runat="server"  Text = "我是autopostback" AutoPostBack = "true"
            oncheckedchanged="CheckBox1_CheckedChanged"/>
        <asp:TextBox ID="T1" runat="server" ontextchanged="TextBox1_TextChanged"></asp:TextBox>
        </div>
    </div>
    </form>
</body>
</html>

　　后端代码：

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

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    {
        T1.Text = (CheckBox1.Checked) ? "选中状态" : "不选中状态";
    }
    protected void TextBox1_TextChanged(object sender, EventArgs e)
    {
        
    }
}

　　css代码：

body {width:500px;
      margin:0px auto;
      padding:0px;
      background-color:red;
}

#mydiv
{
    border:1px soild #333
    }

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