Question

我正在使用万无一失的库来进行动态属性验证。

模型如下：

public class ProfileQuestion
{
        public int QuestionId { get; set; }
        public string QuestionText { get; set; }
        public int QuestionTypeId { get; set; }
        [RequiredIf("Isrequired", true, ErrorMessage = "Required")]
        public string Answer { get; set; }
        public string Day { get; set; }
        public string Month { get; set; }
        public string Year { get; set; }   
        public string Areacode { get; set; }
        public string Zipcode { get; set; }
        public List<ProfileOptions> OptionsList { get; set; }
        public bool Isrequired = false;
}

我们有一个问题列表，其中一些问题是必需的。如果需要提问，请Isrequired = true。我在模型状态验证之前设置了isrequired标志，但是ModelState.IsValid始终为假。

var mandatoryQuestions = objBusLayer.GetMandatoryQuestionIds(m);

foreach (ProfileQuestion question in Response)
{
    if (question.QuestionId == 2)
    {
        string date = question.Year + @"/" + question.Month + @"/" + 
question.Day;
        DateTime outdate;

        if (DateTime.TryParse(date, out outdate))
        {
            question.Answer = date;
        }
    }

    if (question.QuestionId == 3)
    {
        question.Answer = question.Areacode + '-' + question.Zipcode;
    }

    if (mandatoryQuestions.Contains(question.QuestionId.ToString()))
    {
        question.Isrequired = true;
    }
}

if (ModelState.IsValid)
{
    Encryption encObj = new Encryption();
    string decryptedExtPanelistId = encObj.DecryptText(e, password);
    objBusLayer.Register(decryptedExtPanelistId, m, Response);
    return RedirectToAction("Register", new { e = e, m = m, pg = pg + 1 });
}

ViewBag.pageId = pg;
ViewBag.extpnltid = e;
ViewBag.mid = m;

return View(Response);

我找不到问题，有人可以帮助我解决此问题吗？

Answer 1

尝试结合使用ModelState.Clear（）和TryValidateModel（）。

ModelState.Clear();
TryValidateModel(Response);

致谢。

在模型状态验证之前更改模型ASP.NET MVC

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