public ActionResult Login(LoginVM model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                if (WebSecurity.Login(model.UserName, model.Password, persistCookie: model.RememberMe))
                {
                    int UserId = svcSignIn.GetUserId(model.UserName);
                    svcSignIn.Save(new SignInEx()
                    {
                        UserId = UserId, SignInDate = DateTime.Now, SignInType = "Login"
                    });
                    return(Redirect(returnUrl ?? "/"));
                }
                else
                {
                    ModelState.AddModelError("", "Invalid username or password.");
                }
            }

            return(View(model));
        }