<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default5.aspx.cs" Inherits="Default5" %>
<!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>Default selection</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True"
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged">
<asp:ListItem>Literal Control</asp:ListItem>
<asp:ListItem>Label Control </asp:ListItem>
<asp:ListItem>Localize control</asp:ListItem>
<asp:ListItem>Multiview Control</asp:ListItem>
</asp:RadioButtonList><br />
<asp:Label ID="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
<!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>Default selection</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True"
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged">
<asp:ListItem>Literal Control</asp:ListItem>
<asp:ListItem>Label Control </asp:ListItem>
<asp:ListItem>Localize control</asp:ListItem>
<asp:ListItem>Multiview Control</asp:ListItem>
</asp:RadioButtonList><br />
<asp:Label ID="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
Code behind code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default5 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (RadioButtonList1.SelectedIndex < 0)
{
RadioButtonList1.SelectedIndex = 0;
Label1.Text += "Default selection in radio button list.";
}
else
{
Label1.Text = "Your item selected are : " + RadioButtonList1.SelectedItem.Text;
}
}
}
Code generate the following output
