set cookie to expire at end of session? asp.net

Question

I\'m surprised I couldn\'t find any answers.

How do I set my sessionid in my cookie to expire at the end of session? (when the browser closes or the user has been in

Answer 1

Do NOT use Login control, it makes it harder.

protected void btnLogin_Click(object sender, EventArgs e) 
{
    // Check user and password in database
    bool isValidUser = ValidateUser(txtUsername.Text, txtPassword.Text);

    // Set cookie to be not persistent - this means if the user closes the browser, 
    //autentification cookie will be deleted and the user is not longer logged 
    bool isPersistentCookie = false;

    // Login user with the new username
    FormsAuthentication.SetAuthCookie(txtUsername.Text, isPersistentCookie);
}