发布到控制器的jQuery datepicker出生日期为null

Question

我无法理解为什么日期始终为null。我的观点部分：

            <td>
                @Html.DisplayNameFor(x => x.Patient.DateOfBirth)
            </td>
            <td>
                @Html.TextBoxFor(x => x.Patient.DateOfBirth, new { @id = "txtPatientDateOfBirth", @class = "normalText" })
            </td>

我首先通过AJAX查找记录来加载日期：

        success: function (data) {
            if (data.DateOfBirth) {
                $("#txtPatientDateOfBirth").datepicker("setDate", new Date(data.DateOfBirth));
            }
            if (data.ActiveDuty === "YES") {
                $("#ddlPatientStatus").val("Active Duty");
            }
            $("#divPatientPick").dialog('close');
            $("#txtPatientName").val(data.Name);
            $("#txtPatientName").show()
        }

然后我尝试用AJAX发布它：

        $.ajax({
            type: 'POST',
            data: $("#formPreArrival").serializeArray(),
            url: '@Url.Action("AddPreArrival")',
            success: function (data) {
                if (data.Errors === 'ERRORS') {
                    ErrorDialog("#MessageDialog", "#lblError", "There was an error detected in the submission of data.  Please try again later. ", "Error");
                    return false;
                }
                else {
                    ErrorDialog("#MessageDialog", "#lblError", "Patient Pre-Arrival data has been successfully entered. ", "Record Added");
                    $("#formPreArrival")[0].reset();
                    $('body, html').animate({ scrollTop: $('form').offset().top }, 'slow');
                    return false;
                }
            }

但是模型字段的出生日期总是显示为空：

    [HttpPost]
    public ActionResult AddPreArrival(PreArrivalModel model)
    {
        string retval = "";
        if (!ModelState.IsValid)
        {
            var errors = ModelState.Where(x => x.Value.Errors.Count > 0).Select(x => new { x.Key, x.Value.Errors }).ToArray();
            model.Errors = "ERRORS";
            retval = "ERRORS";
            return Json(retval);
        }
        retval = Repository.AddPreArrival(model);

        return Json(JsonConvert.SerializeObject(retval));
    }

预先部分模型的部分：

    [Display(Name = "Transfer Category:")]
    public string CallTransferCategory { get; set; }

    public PatientModel Patient { get; set; }

    public TransferringFacilityModel TransferringFacility { get; set; }

    public UserModel User { get; set; }

    [Display(Name ="DEERS Verification: Is patient ELIGIBLE for care?")]
    public bool DeersVerify { get; set; }

    [Display(Name ="Comments:")]
    public string Notes { get; set; }

    public string Errors { get; set; }

    [Display(Name = "DOB:")]
    public DateTime? DateOfBirth { get; set; }

    [Display(Name = "DOB:")]
    public string DateOfBirthForDisplay
    {
        get
        {
            if (DateOfBirth.HasValue)
            {
                return DateOfBirth.Value.ToShortDateString();
            }
            return "";
        }
    }

患者模型部分：

    [Display(Name = "Age:")]
    public int Age
    {
        get
        {
            if (DateOfBirth.HasValue)
            {
                return DateTime.Today.Year - DateOfBirth.Value.Year;
            }
            return 0;
        }
    }

    [Display(Name = "DOB:")]
    public DateTime? DateOfBirth { get; set; }

    [Display(Name = "DOB:")]
    public string DateOfBirthForDisplay
    {
        get
        {
            if (DateOfBirth.HasValue)
            {
                return DateOfBirth.Value.ToShortDateString();
            }
            return "";
        }
    }