How to make WCF for Login function using ASP.NET MVC4

Question

i can't read from database then compare this string with the parameter of certain function

i'm using ASP.net MVC4

i tried that i create WCF as following :

public int login_service (string username, string password)

{

OnlineFoodOrderingEntities user1 = new OnlineFoodOrderingEntities();

var x = from n in user1.users select n;

List tst= x.ToList();

 foreach (var u in tst)

{

if (u.username == username && u.password == password )

{return 1;}

else{return 0;}

} 

}

then in MVC application

public ActionResult Login(string username, string password)

{

ServiceReference1.ServiceClient sc = new ServiceReference1.ServiceClient();

int check = sc.login_service(username,password);

if ( check == 1)

{

return RedirectToAction("cuisine", "Home");

}

else

{

return View();

}

}

the database is called OnlineFoodOrdering

and the table is called user

i want when the check variable is equle to "1" it redirect to Home/cuisine.

please any help

thanks in advance