Changing the themes of page on Button Click
<%@ Page Language="C#" AutoEventWireup="true" Theme="Green"
CodeFile="Default.aspx.cs" Inherits="_Default" %> <!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>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btn1" runat="server" Text="Black" OnClick="Button1_Click" />
<asp:Button ID="Button1" runat="server" Text="Green" OnClick="Button2_Click" />
</div>
</form>
</body>
</html>
Code Behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public static string theme;
protected void Page_PreInit(object sender, EventArgs e)
{
switch (Request.QueryString["theme"])
{
case "Black":
Page.Theme = "Black";
break;
case "Green":
Page.Theme = "Green";
break;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("Default.aspx?theme=Green");
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("Default.aspx?theme=Black");
}
}
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