确认密码在MVC中不起作用

Question

我正在使用MVC数据库第一种方法。我的数据库没有确认密码字段。所以我在我创建的部分类中添加了这个字段，并使用了[NotMapped]属性。

数据库生成的课程

namespace OnlineTest
{        

    public partial class User
    {

        public User()
        {

            this.tbl_purchase = new HashSet<Purchase>();
        }

        public int UserId { get; set; }
        public string username { get; set; }
        public string password { get; set; }
        public string email { get; set; }
        public string PhoneNo { get; set; }

        public virtual ICollection<Purchase> tbl_purchase { get; set; }
    }
} 

我创建的部分课程

namespace OnlineTest
{

    [MetadataType(typeof(UserMetadata))]
    public partial class User
    {

        [DataType("Password")]
        [NotMapped]
        [System.Web.Mvc.Compare("password", ErrorMessage = "The password and confirmation password do not match.")]
        public string ConfirmPassword { get; set; }
    }

    public class UserMetadata
    {

        [Required(ErrorMessage = "Please type a username")]
        [Display(Name = "UserName")]
        public string username { get; set; }

        [Required(ErrorMessage = "Please type a EmailId")]
        [EmailAddress(ErrorMessage = "E-mail is not valid")]
        [Display(Name = "Email address")]
        public string email { get; set; }

        [Required(ErrorMessage = "Please type a Phone number")]
        [Display(Name = "Phone Number")]
        [StringLength(10, MinimumLength = 10, ErrorMessage = "Your mobile not corrct")]
        [RegularExpression("([1-9][0-9]*)", ErrorMessage = "You have to enter only numbers 111-111-1111")]
        public string PhoneNo { get; set; }

        [Required(ErrorMessage = "Please type a password")]
        [Display(Name = "Password")]
        public string password { get; set; }
    }        
}

查看比较密码

<div class="form-group">
                @Html.LabelFor(model => model.password, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.PasswordFor(model => model.password, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.password, "", new { @class = "text-danger" })
                </div>
            </div>


        <div class="form-group">
            @Html.LabelFor(model => model.ConfirmPassword, htmlAttributes: new 
               { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.PasswordFor(model => model.ConfirmPassword, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.ConfirmPassword, "", new { @class = "text-danger" })
            </div>
        </div>

但由于某种原因，它不起作用且Model.state无效，它会抛出错误＆＃34;密码和确认密码不匹配。＆＃34;