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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="CheckBoxTest" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Check Box Test</title>
</head>
<body>
<form id="form1" runat="server">
<div id="container">
<h1>Check Box Test</h1>
<div class="box">
Delivery:
<asp:CheckBox ID="chkDelivery" runat="server"
OnCheckedChanged="CheckChanged" AutoPostBack="True" />
<asp:Label ID="labAddress"
runat="server"
Text="Customer Address: "
Visible="false" /><br />
<asp:TextBox ID="txtAddress"
runat="server"
Columns="60"
Visible="False" />
Pizza Styles: <br />
<asp:CheckBox ID="chkThin" runat="server" Text="Thin Crust" />
<br />
<asp:CheckBox ID="chkExtra" runat="server" Text="Extra Sauce" />
</div>
<asp:Button ID="btnOrder" runat="server"
Text="Order Pizza" OnClick="btnOrder_Click" />
<strong><asp:Label ID="labMessage" runat="server" /></strong>
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class CheckBoxTest : System.Web.UI.Page
{
protected void CheckChanged(object sender, System.EventArgs e)
{
if (chkDelivery.Checked)
{
txtAddress.Visible = true;
labAddress.Visible = true;
}
else
{
txtAddress.Visible = false;
labAddress.Visible = false;
}
}
protected void btnOrder_Click(object sender, EventArgs e)
{
labMessage.Text = "Pizza Order Styles: <br/>";
if (chkThin.Checked)
labMessage.Text += chkThin.Text + "<br/>"; ;
if (chkExtra.Checked)
labMessage.Text += chkExtra.Text + "<br/>"; ;
}
}
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