Change Master Page Dynamically

Here i the code that shows how to change master page of the page at runtime:

protected void Page_PreInit(object sender, EventArgs e) 

{ 

 if (Session["UserAccount"] == null) //check the user weather user is logged in or not

    this.Page.MasterPageFile = "~/General.master";

 else

    this.Page.MasterPageFile = "~/Member.master";

}

Hope this will help !!!