how create ?page2 in asp.net?

hi
i want create page2 in my site (default.aspx?page2)
when a user click on Button (choise next page (next 20 record)) , i want redirect page and cache page2,page3,... for 30 second
[perhaps asked Previously , but i did not know about it, what should I search for something]
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did this work is done manually? ?!
protected void NextPage_Click(object sender, EventArgs e) { Response.Redirect("Default.aspx?Page=2"); } and get
TextBox1.Text = HttpUtility.UrlDecode(HttpContext.Current.Request.Url.AbsolutePath.Replace("Default.aspx?page=", null));// = 2 or 3 or ... -----------------------------------------------------------------------------------------------------

or di ...