在1個視圖中編輯ViewModel列表

Question

我試圖將視圖模型列表傳遞給一個視圖：

這就是我要通過的內容：

    public class CancellationsVM
    {
       public IEnumerable<CancellationFull> Cancellations { get; set; }
    }

這就是我通過的方式

    public ActionResult CancelByDateCont1(FormCollection fm)
    {
        ICollection<CancellationFull> cancellations = repo_cancellation.CreateCancellationsWithCourses();
        CancellationsVM cancellationsVM = new CancellationsVM();
        cancellationsVM.Cancellations = cancellations;

        return View(cancellationsVM);
    }

然后更新一些值，然后將數據保存回去：

@model Project.ViewModels.CancellationsVM
@using (Html.BeginForm("CancelByDateCont2", "Faculty", FormMethod.Post))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)

<fieldset>
    <legend>CancellationsVM</legend>
    @foreach (var cancellation in Model.Cancellations)
    {
        <div>
            <p>
                @Html.DisplayFor(modelItem => cancellation.CancellationMessage)
            </p>
        </div>
        <div>
            <p>
                @Html.DisplayFor(modelItem => cancellation.Course)
            </p>
        </div>
        <div>
            <p>
                @Html.DisplayFor(modelItem => cancellation.DateTime)
            </p>
        </div>
        <div>
            <p>
                @Html.DisplayFor(modelItem => cancellation.Faculty)
            </p>
        </div>
        <div>
            <p>
                @Html.DisplayFor(modelItem => cancellation.Id)
            </p>
        </div>

    }

    <p>
        <input type="submit" value="Save" />
    </p>
</fieldset>
}

然后獲取更改：

    [HttpPost]
    public ActionResult CancelByDateCont2(CancellationsVM fm)
    {
        return View();
    }

所以我能夠收到CancellationsVM fm，但是Cancellations列表始終為空。 我究竟做錯了什么？ 這是因為列表取消類本身也具有另一個類嗎？

Answer 1

視圖頂部的@model聲明需要包裝在Ienumerable中

@model IEnumerable<Project.ViewModels.CancellationsVM>