Accessing form data in to controller using parameters ?

  [HttpPost]
         public ActionResult ReceiveWithParameter(string txtUserName, 
        string txtPassword)
         {
             if (txtUserName.Equals("user", 
StringComparison.CurrentCultureIgnoreCase) && txtPassword.Equals("pass", StringComparison.CurrentCultureIgnoreCase))
             {
                 return Content("Login successful !");
             } 
                else 
            { 
                return Content("Login failed !");
             }
      } 

The parameters name of this action method are same as the name of the element