c# MVC 模型无法从view中获得数据

建立一个登录Model

public class LoginModel
    {
        public string name;
        public string password;
 
        public string login()
        {
            using(var db=new DataEntities())
            {
                var passMd5 = password.md5();
                var user=db.Info.FirstOrDefault(u => u.userName == name);
                if(user==null)
                {
                    return "User name not exist";
                }
                if(user.passWord!=passMd5)
                {
                    return "Password is invalid";
                }
                else
                {
                    return null;
                }
            }
        }
    }

在View中建立表单

在 Controller的HttpPost method里捕捉用户登录事件,但是Model中的值均为空

public ActionResult Login(LoginModel model)
        {
            var result = model.login();
            if (result == null)
            {
                return RedirectToAction("Home", "User");
            }
            else
            {
                ModelState.AddModelError("",result);
                return View(model);
            }
        }