How to redirect same page after some backgroud process complete using asp.net ?

Hello,

I am creating a application which display student details in one grid one by one. When user click on btnDetails then I need to start a thread which display next student details after few seconds (this is not hardcoded) I need to generate details realtime so it will take time i.e. 2-3 minutes,  So I would like to wait.

I have done this code but getting exception "Response is not available in this context" so how to solve that.

<pre>
protected void btnNext_Click(object sender, ImageClickEventArgs e)
{
    Response.Status = "301 Moved Permanently";
    Response.AddHeader("Location", "http://localhost:2653/WebSite1/Default.aspx");
}

public void NextStudent()
{
try
{
    int iCont = 0;
    while (true)
    {
    Thread.Sleep(3000);
    iCont++;
 &nb ...