日期:2014-05-18 浏览次数:20570 次
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:RadioButton ID="RadioButton1" runat="server" AutoPostBack="True" OnCheckedChanged="RadioButton1_CheckedChanged"
GroupName="1" />
<asp:RadioButton ID="RadioButton2" runat="server" AutoPostBack="True" OnCheckedChanged="RadioButton2_CheckedChanged"
GroupName="1" />
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
</div>
</form>
</body>
</html>
cs 文件
using System;
using System.Web.UI;
public partial class Default3 : Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DropDownList1.Items.Add("1");
DropDownList1.Items.Add("2");
}
}
protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
{
DropDownList1.Visible = false;
}
protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
{
DropDownList1.Visible = true;
}
}
我试过,这样不会有问题的