Question

我正在尝试使用Entity Framework创建注册屏幕，并且我不使用数据库。使用我的模型的上下文

我正在遵循有关如何执行该操作的指南，但是使用数据库，并且在从控制器创建视图时出现此错误：

登录控制器：

public class loginController : Controller
{
    private loginContext db = new loginContext();

    // GET: login
    public ActionResult Index()
    {
        return View();
    }

    [AllowAnonymous]
    [HttpPost]
    public ActionResult Index(login lc)
    {
        string mainconn = ConfigurationManager.ConnectionStrings["loginContext"].ConnectionString;

        SqlConnection sqlconn = new SqlConnection(mainconn);
        string sqlquery = "select email,password from logins where email=@email and password=@password";

        sqlconn.Open();

        SqlCommand sqlcomm = new SqlCommand(sqlquery, sqlconn);
        sqlcomm.Parameters.AddWithValue("@email", lc.email);
        sqlcomm.Parameters.AddWithValue("@password", lc.password);

        SqlDataReader sdr = sqlcomm.ExecuteReader();

        if (sdr.Read())
        {
            FormsAuthentication.SetAuthCookie(lc.email, true);
            Session["emailid"] = lc.email.ToString();
            return RedirectToAction("Welcome", "Login");
        }
        else
        {
            ViewData["mensage"] = "Username & Password are wrong:";
        }

        sqlconn.Close();
        return View();
    }

    public ActionResult welcome()
    {
        return View();
    }
}

模型登录：

public class login
{
    [Required(ErrorMessage ="Please enter your email")]
    [Display(Name ="Enter email:")]
    public string email { get; set; }

    [Required(ErrorMessage = "Please enter your Password")]
    [Display(Name = "Enter Password:")]
    [DataType(DataType.Password)]
    public string password { get; set; }
}

Answer 1

EntityType login没有定义键。定义此EntityType的密钥。

很显然，您的模型没有键属性，请按如下所示更改login模型：

public class login
{
    [Key]
    public int Id {get; set;}

    [Required(ErrorMessage ="Please enter your email")]
    [Display(Name ="Enter email:")]
    public string email { get; set; }

    [Required(ErrorMessage = "Please enter your Password")]
    [Display(Name = "Enter Password:")]
    [DataType(DataType.Password)]
    public string password { get; set; }
}

，此错误将解决。祝你好运。

无法使用实体框架在ASP.NET中创建登录

1 个答案: