MVC发布的对象属性数组由于字段而不是属性为空[重复]

Question

昨晚，我创建了一个包含对象数组字段的模型，其中包含所需的属性。模型绑定在 GET 请求下正常工作，但是当它回发时，一切都回到模型中，不包括这些数组的字段。 最初，我检查了语法，向该对象添加了 ID，但它们都不起作用。 型号是：

    public class RateEditVM
{
    [Required(ErrorMessage = "IDF boş geçilemez!")]
    public int? FK_ITH_IDFID { get; set; }

    [Required(ErrorMessage = "Mal Bedeli boş geçilemez!")]
    public decimal? GoodsPrice { get; set; }

    [Required(ErrorMessage = "İlk kur boş geçilemez!")]
    public decimal? GGBRate { get; set; }

    [Required(ErrorMessage = "Mal Bedeli (TL) boş geçilemez!")]
    public decimal? GoodsPriceTL { get; set; }

    public RateValueHolder[] ShippingExpenseValues ;
    public RateValueHolder[] InsuranceExpenseValues;
    public RateValueHolder[] BankExpenseValues ;
    public RateValueHolder[] CustomsExpenseValues;
    public RateValueHolder[] LocalExpenseValues;

    [Required(ErrorMessage = "Diğer Masraflar boş geçilemez!")]
    public decimal? OtherExpense { get; set; }

    [Required(ErrorMessage = "Toplam Masraflar boş geçilemez!")]
    public decimal? TotalExpense { get; set; }

    [Required(ErrorMessage = "Toplam Tutar boş geçilemez!")]
    public decimal? Total { get; set; }

    [Required(ErrorMessage = "Son Kur boş geçilemez!")]
    public decimal? RateCalculated { get; set; }
}

这些对象是 ValueHolders：

    public class RateValueHolder
{
    [Required(ErrorMessage = "Boş geçilemez!")]
    public decimal? Value { get; set; }

    public int ID { get; set; }
    public string Description { get; set; }
}

Answer 1

答案很尴尬。当我将字段更改为属性时，一切正常：

    public RateValueHolder[] ShippingExpenseValues { get; set; }
    public RateValueHolder[] InsuranceExpenseValues { get; set; }
    public RateValueHolder[] BankExpenseValues { get; set; }
    public RateValueHolder[] CustomsExpenseValues { get; set; }
    public RateValueHolder[] LocalExpenseValues { get; set; }

我认为，这是 MVC 中默认 ModelBinder 的一个错误。如果 ModelBinder 只查看属性，则当该模型类具有该字段而不是属性 IMO 时，它应该引发错误。因为，在我看来，我将这些字段用作谓词，以便 MVC 知道我绑定了什么。

<fieldset class="col-xs-12">
<legend>Nakliye Masrafları</legend>
@for (var i = 0; i < Model.ShippingExpenseValues.Length; i++)
{
    @Html.EditorFor(e => e.ShippingExpenseValues[i]);
}
</fieldset>