无法在家庭控制器中使用模型类方法

Question

HomeController

    [HttpGet]
    public ActionResult Login()
    {
        return View();
    }
    [HttpPost]
    public ActionResult Login(Login l)
    {
        if (ModelState.IsValid)
        {
            if (l.CheckUser(l.UserName, l.Password))
            {
                return RedirectToAction("Home/Home");
            }
            else
            {
                Response.Write("Invalid User");
                return View();
            }
        }
        else
        {
            return View();
        }

    }

模型类（登录）

 namespace sampleprojectone.Models
 {
    public class Login
    {
        [Required(ErrorMessage ="Username must not be empty")]
        [Display(Name ="Username")]
        public string Username { get; set; }
        [Required(ErrorMessage = "Password must not be empty")]
        [Display(Name = "Password")]
        public string Password { get; set; }
        public bool CheckUser(string username,string password)
           {
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["Constr"].ToString());
                con.Open();
                SqlCommand cmd = new SqlCommand("proc_checklogin", con);
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.AddWithValue("@username", username);
                cmd.Parameters.AddWithValue("@password", password);
                bool b = Convert.ToBoolean (cmd.ExecuteScalar());
                return b;
           }
     }
 }

错误

严重级别描述项目文件行抑制状态错误CS1061'登录'不包含'CheckUser'的定义，找不到可以接受的扩展方法'CheckUser'接受类型为'Login'的第一个参数（您是否缺少using指令或程序集引用？）sampleprojectone G： \ King \ Projects \ sampleprojectone \ sampleprojectone \ Controllers \ HomeController.cs 35有效

Answer 1

我没有在HomeController中使用名称空间using sampleprojectone.Models;。现在解决了，谢谢cornelis和rob。