MVC Required Field not Working

MVC Required Field not Working

Title says it all, can anyone spot what I'm doing wrong. I've tried moving
around my HTMlValidation Summary and a bunch of other things. I feel like
it may have something to with the views I am returning from my Controller
Class.
-- Model
public class Login
{
[Required(ErrorMessage = "First Name is required")]
[Display(Name = "First Namex")]
public string FirstName { get; set; }
[Required(ErrorMessage = "Password is required")]
[DataType(DataType.Password)]
[Display(Name = "Passwordx")]
public string Password { get; set; }
}
-- Controller
[HttpPost]
public ActionResult Login(string FirstName, string Password)
{
if (ModelState.IsValid)
{
bool validLogin = new UserBAL().ValidateUser(FirstName,
Password);
{
if (validLogin == true)
{
return RedirectToAction("Index", "Invoice");
}
else
{
return RedirectToAction("Index");
// ModelState.AddModelError("", "The user name or
password provided is incorrect.");
}
}
}
return View();
}
--View
@using (Html.BeginForm("Login", "Home"))
{ @Html.ValidationSummary(true)
<div>
<fieldset>
<legend>Login</legend>
<div class ="fields">
@Html.LabelFor(u => u.FirstName)
</div>
@Html.TextBoxFor(u => u.FirstName)
@Html.ValidationMessageFor(u => u.FirstName) <br />
<div class ="fields">
@Html.LabelFor(u => u.Password)
</div>
@Html.PasswordFor(u => u.Password) <br />
<input type="submit" value="Log In" />
</fieldset>
</div>
}