How to change the Page Title dynamically

<TITLE id='Title1' runat =server ></TITLE>

VB.NET

’Declare
Protected WithEvents Title1 As System.Web.UI.HtmlControls.HtmlGenericControl

’In Page_Load
Title1.InnerText ='Page 1'

C#

//Declare 
protected System.Web.UI.HtmlControls.HtmlGenericControl Title1 ;

//In Page_Load
Title1.InnerText ='Page 1' ;