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



    RadioButtonList Control


    
    
               id="rblSize" runat="server" 
         autoPostBack="true"
         cellSpacing="20"
         repeatColumns="3"
         repeatDirection="horizontal"
         RepeatLayout="table"
         textAlign="right"
         OnSelectedIndexChanged="rblSize_SelectedIndexChanged">
           
           
           
      
    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
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 Default_aspx : System.Web.UI.Page 
{
   protected void lblTime_Init(object sender, EventArgs e)
   {
     lblTime.Font.Name = "Verdana";
     lblTime.Font.Size = 20;
     lblTime.Font.Bold = true;
     lblTime.Font.Italic = true;
     lblTime.Text = DateTime.Now.ToString();
   }
   protected void rblSize_SelectedIndexChanged(object sender, EventArgs e)
   {
     if (rblSize.SelectedIndex != -1)
     {
       int size = Convert.ToInt32(rblSize.SelectedItem.Value);
       lblTime.Font.Size = size;
     }
   }
 }