A lightweight AJAX.NET-enabled grid control

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;


public partial class Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // uncomment the following line to always choose the default profile
        //Session["GridProfile"] = AjaxGrid.DefaultProfile;
        List<AjaxGrid.GridProfileData> profile = (List<AjaxGrid.GridProfileData>)Session["GridProfile"];
        if (profile == null)
        {
            // normally, the code to load profile data would be done from a login page
            // where the user could be uniquely identified and their profile loaded from the database
            // if a null profile in the session is detected in this page, normally redirect to the login page 
            BinaryFormatter formatter = new BinaryFormatter();
            using(MemoryStream memStream = new MemoryStream())
            {
                // example serialise to a memory stream
                formatter.Serialize(memStream,AjaxGrid.DefaultProfile);
                memStream.Seek (0, SeekOrigin.Begin);
                // example deserialise from a memory stream
                profile = (List<AjaxGrid.GridProfileData>)formatter.Deserialize(memStream);
                Session["GridProfile"] = profile;
            }
        }
        profile[AjaxGrid1.GridId].SelectProc = OnSelect;
        profile[AjaxGrid1.GridId].ValidateProc = OnValidate;
    }

    // a link cell has been seleted
    public static void OnSelect(int databaseId)
    {
        // do some actions when a link has been selected...
    }

    // a cell has been updated
    public static string OnValidate(string columnName, string value)
    {
        return null; // validation accepted
    }

}