Implementation of paging and sorting for the GridView control that works with an array of objects

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 
{
    #region Event Handlers

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            gv.BindDataSource();

    }
    protected void gv_DataSourceRequested(out Array dataSource)
    {
        dataSource = GetTestData();
    }

    #endregion

    #region Private

    private ProductInfo[] GetTestData()
    {
        ProductInfo[] res = new ProductInfo[8];
        res[0] = new ProductInfo("TV-Tuner", 1, 40.00);
        res[1] = new ProductInfo("Modem", 2, 19.00);
        res[2] = new ProductInfo("Motherbord", 1, 120.00);
        res[3] = new ProductInfo("Keyboard", 18, 5.00);
        res[4] = new ProductInfo("Mouse", 25, 4.99);
        res[5] = new ProductInfo("Mouse pad", 30, 1.50);
        res[6] = new ProductInfo("Monitor", 4, 234.00);
        res[7] = new ProductInfo("Fan", 10, 8.00);
        return res;
    }

    #endregion
}