c# - 提交后ID设置为0

Question

我知道有大量示例可以解决我的问题。我已尽我所能，但仍无法解决我的问题。我有一个 HotelRoomID，每次提交后都设置为 0。我使用 HotelRoomID 从数据库中检索数据。

这是我的 BookingViewModel(其他属性被忽略)

public int HotelRoomID { get; set; }
public HotelRoom HotelRoom { get; set; }

这是我的 BookingController。它可能看起来很奇怪，但我的表格是步进表格。

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Stepper(BookingViewModel bookingViewModel) //problem starts here. HotelRoomID is 0...
{
        if (!ModelState.IsValid)
        {
            switch (bookingViewModel.Step)
            {
                case 1:
                    GenerateForm(bookingViewModel);
                    _bookingViewModel.Step = 2;
                    break;
                case 2:
                    var item = bookingViewModel.PersonList;
                    GenerateForm(bookingViewModel);
                    GenerateOverview(bookingViewModel);
                    break;
                case 3:
                    GenerateOverview(bookingViewModel);
                    break;
            }
            return View("Create",_bookingViewModel);
        }
        SaveBooking(_bookingViewModel);
        return View("home");
}

下面是 Razor 表单的代码:

@model HoteldeBotel.Models.BookingViewModel

<div class="row setup-content" id="step-2">
            @using (Html.BeginForm("Stepper", "Booking", Model))
            {
                @Html.AntiForgeryToken()
                @if (Model.PersonList != null)
                {
                <div class="col-xs-12">
                    <div class="col-md-12 formContent">
                        <h3> Persoonsgegevens invullen </h3>
                        @for (int i = 0; i < Model.PersonList.Count(); i++)
                        {
                            <ul class="col-md-4 personFormList">
                                @Html.ValidationMessageFor(model => model.PersonList[i].Name, "", new { @class = "text-danger" })
                                <li>
                                    @Html.LabelFor(model => Model.PersonList[i].Name, htmlAttributes: new { @class = "control-label" })
                                    @Html.EditorFor(model => Model.PersonList[i].Name, "", new { @class = "form-control numberOfPersons" })
                                </li>
                                @Html.ValidationMessageFor(model => model.PersonList[i].Email, "", new { @class = "text-danger" })
                                <li>
                                    @Html.LabelFor(model => Model.PersonList[i].Email, htmlAttributes: new { @class = "control-label" })
                                    @Html.EditorFor(model => Model.PersonList[i].Email, "", new { @class = "form-control numberOfPersons" })
                                </li>
                                <li>
                                    @Html.ValidationMessageFor(model => model.AddressList[i].Name, "", new { @class = "text-danger" })
                                    <br />
                                    <label class="control-label">Straatnaam</label>
                                    @Html.EditorFor(model => Model.AddressList[i].Name, "", new { @class = "form-control numberOfPersons" })
                                </li>
                                @Html.ValidationMessageFor(model => model.AddressList[i].ZipCode, "", new { @class = "text-danger" })
                                <li>
                                    @Html.LabelFor(model => Model.AddressList[i].ZipCode, htmlAttributes: new { @class = "control-label" })
                                    @Html.EditorFor(model => Model.AddressList[i].ZipCode, "", new { @class = "form-control numberOfPersons" })
                                </li>
                                @Html.ValidationMessageFor(model => model.AddressList[i].City, "", new { @class = "text-danger" })
                                <li>
                                    @Html.LabelFor(model => Model.AddressList[i].City, htmlAttributes: new { @class = "control-label" })
                                    @Html.EditorFor(model => Model.AddressList[i].City, "", new { @class = "form-control numberOfPersons" })
                                </li>
                            </ul>
                        }
                        @if (Model.Step == 2)
                        {
                            Model.Step = 3;
                            <button class="btn btn-primary nextBtn btn-lg pull-right" type="submit">Next</button>
                        }
                        else
                        {
                            <button class="btn btn-primary nextBtn btn-lg pull-right" type="button">Next</button>
                        }
                    </div>
                </div>
                }
            }
</div>

我希望有人能帮助我，因为我无法解决这个问题。有谁知道如何解决这个问题？

提前致谢。

Answer 1

您缺少 HotelRoomID 的隐藏输入字段，如下所示:

@Html.HiddenFor(model => model.HotelRoomID, new { Value = "yourValue"})

此外，将 @using (Html.BeginForm("Stepper", "Booking", Model)) 更改为 @using (Html.BeginForm("Stepper", "Booking", FormMethod.Post))