Use ViewState to store random data : ViewState « Page Lifecycle « ASP.NET Tutorial

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

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        Use View --&gt; Source to see the view
        state of this page.</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 ViewStateChunking : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    Random rnd = new Random();
    byte[] buffer = new byte[1050];
    rnd.NextBytes(buffer);
    ViewState["Data"] = buffer;
    }
}

5.21.ViewState
	5.21.1.	Use ViewState to create a simple counter (C#)
	5.21.2.	Save string variable to ViewState
	5.21.3.	Convert.FromBase64String and view state encoding
	5.21.4.	Use ViewState to store random data
	5.21.5.	Visualize the current Base64-encoded contents of the view state
	5.21.6.	Track Your Viewstate