Sharepoint FBA- Login back to same page

To login back to the same page from wher eyou got logged out from - Sharepoint FBA


Uri MyLastURL;
protected void Page_Load(object sender, EventArgs e)
{

if (!IsPostBack)

{

MyLastURL = Request.UrlReferrer;

ViewState["LastURL"] = MyLastURL.AbsoluteUri;
}
}

protected void Login_Click(object sender, EventArgs e)

{ //After successful authentication do Response.Redirect

Response.Redirect(ViewState["LastURL"]);

}