asp.net login control - set user auth ticket expiration date - asp.net

Question

I wanna to overide expiration date of user auth ticket on login.aspx.
This code doen't work properly, because after 1 minute user is still authenticated.
private int loginExpire = 1;
protected void Login_LoggedIn(object sender, EventArgs e)
{
HttpCookie authCookie = Response.Cookies[FormsAuthentication.FormsCookieName];
FormsAuthenticationTicket oldAuthTicket = FormsAuthentication.Decrypt(authCookie.Value);
var newAuthTicket = new FormsAuthenticationTicket(
oldAuthTicket.Version,
oldAuthTicket.Name,
DateTime.Now,
DateTime.Now.Add
(TimeSpan.FromMinutes(loginExpire)),
oldAuthTicket.IsPersistent,
oldAuthTicket.UserData,
FormsAuthentication.FormsCookiePath);
string encryptedTicket = FormsAuthentication.Encrypt(newAuthTicket);
authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
HttpContext.Current.Response.Cookies.Set(authCookie);
FormsAuthentication.RedirectFromLoginPage(GetDestinationPage(lgUserLogin.UserName), false);
}
web.config
<authentication mode="Forms">
<forms loginUrl="~/Account/Login.aspx" requireSSL="false" timeout="1" slidingExpiration="true" protection="All"/>
</authentication>

Answer 1

Edit the forms element for authentication section in web.config: set timeout="1" and slidingExpiration="false"
Or instead of RedirectFromLoginPage method use code below:
String returnUrl;
if (Request.QueryString["ReturnURL"] == null)
{
returnUrl = "/Default.aspx"; //your default page url
}
else
{
returnUrl = Request.QueryString["ReturnURL"];
}
Response.Redirect(returnUrl);