模型无效

Question

我正在创建一个注册表单。我有一个国家身份证号码。但我希望用户在确认注册后填写它。那我就不在报名表上写。

表示：

National Identity Number
<div class="editor-field">
  @Html.EditorFor(model => model.IdentityNumber)
  @Html.ValidationMessageFor(model => model.IdentityNumber)
</div>

这是我的财产：

[IdentityNumber("It is not a valid identity number")]
[Required(ErrorMessage = "You have to enter your national number")]
[DisplayName("National Identity Number:")]
public string IdentityNumber { get; set; }

但这不起作用。我认为原因是属性[IdentityNumber]和[Required]。如果我评论他们，

public ActionResult Register(Member model)
{
    if (ModelState.IsValid)
    {
        //.....

ModelState.IsValid是false。如果我取消注释它们，它将返回true。那么我必须在哪里改变一些东西以允许它？我的意思是，我希望用户在注册后写下他/她的身份证号码。

在我的数据库中，身份国家号码字段也允许为空。

编辑：这是我的属性代码：

[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property,
AllowMultiple = false, Inherited = true)]
public class IdentityNumberAttribute : ValidationAttribute, IClientValidatable
{
    private string WrongIdentityNumber;

    public IdentityNumberAttribute(string message)
        :base("Invalid an identity number")
    {
        WrongIdentityNumber = message;
    }

    private string identityNumber;
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        if (value == null)
            return new ValidationResult(WrongIdentityNumber);   

        identityNumber = value.ToString();

        if (identityNumber.Length != 11)
            return new ValidationResult(WrongIdentityNumber);

        int sum = 0;

        for (int i = 0; i < identityNumber.Length - 1; i++)
        {
            sum += Convert.ToInt32(identityNumber[i].ToString());
        }

        return sum.ToString()[1] == identityNumber[10]
                   ? ValidationResult.Success
                   : new ValidationResult(WrongIdentityNumber);
    }


    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        ModelClientValidationRule validationRule = new ModelClientValidationRule();
        validationRule.ValidationType = "identitynumber";
        validationRule.ErrorMessage = "Invalid identity number";
        validationRule.ValidationParameters.Add("param", "");
        return new List<ModelClientValidationRule> { validationRule };

        //var rule = new ModelClientValidationRule();
        //rule.ErrorMessage = FormatErrorMessage(metadata.GetDisplayName());
        //rule.ValidationParameters.Add("identitynumber", identityNumber);     //küçük harfle yaz html kuralı
        //rule.ValidationType = "identitynumber";
        //yield return rule;
     }
}

Answer 1

您可以添加此行

ModelState.Remove("ErrorKey");//you can find the error key by stepping though your code
if (ModelState.IsValid)
        {
          .....

＆＃34; ErrorKey＆＃34;将是＆＃34; YourModelName.YourPropertyName＆＃34;。设置一个断点并将鼠标悬停在ModelState上，您就可以看到所有键。

但应创建一个只包含您需要的属性的视图模型，将数据注释放在那里，并将域模型保留在其中。