Use ViewState to store object list (C#) : ViewState « Sessions « ASP.NET Tutorial

<%@ Page Language="C#" AutoEventWireup="true"  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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

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 : System.Web.UI.Page 
{
    [Serializable]
    class Person
    {
        public string first = "first";
        public string last = "last";
        public string blog = "http://www.java2s.com";
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        Person[] people = new Person[500];
        for (int i = 0; i < people.Length; i++)
        {
            people[i] = new Person();
        }
        ViewState["Folks"] = people;
    }

    private string _pageGuid = null;
    public string PageGuid
    {
        get
        {
            if (_pageGuid == null)
                _pageGuid = this.Request.Form["__VIEWSTATE_KEY"];
            if (_pageGuid == null)
                _pageGuid = Guid.NewGuid().ToString();
            return _pageGuid;
        }
        set
        {
            _pageGuid = value;
        }
    }

    protected override object LoadPageStateFromPersistenceMedium()
    {
        return Session[this.PageGuid];
    }

    protected override void SavePageStateToPersistenceMedium(object viewState)
    {
        RegisterHiddenField("__VIEWSTATE_KEY", this.PageGuid);
        Session[this.PageGuid] = viewState;
    }

}

11.5.ViewState
	11.5.1.	Disable ViewState for a certain control
	11.5.2.	Trim view state
	11.5.3.	Use ViewState to store object list (C#)
	11.5.4.	Use ViewState to store object list (VB)
	11.5.5.	Insert view state data in Page render event (C#)
	11.5.6.	Insert view state data in Page render event (VB)