protected void btnLogin_Click(object sender, EventArgs e)
    {
        if (Sec.ChallengeCredentials(txtUser.Text, txtPassword.Text))
        {
            Session["UserName"] = txtUser.Text;
            Session["UserID"]   = txtUser.Text;

            //Creting a Cookie Object
            HttpCookie _userInfoCookies = new HttpCookie("kit-cat");

            //Setting values inside it
            _userInfoCookies["UserName"] = txtUser.Text;
            _userInfoCookies["UserID"]   = txtUser.Text;

            //Adding Expire Time of cookies
            _userInfoCookies.Expires = DateTime.Now.AddDays(5);

            //Adding cookies to current web response
            Response.Cookies.Add(_userInfoCookies);

            FormsAuthentication.SetAuthCookie(txtUser.Text, true);
            FormsAuthentication.RedirectFromLoginPage(txtUser.Text, true);
        }
    }