c# - 如何在 asp.net MVC 中映射 2 个不同的列表

Question

我试图将一个列表从 Controller 发送到 View。我以为它会绑定(bind)，但它是不同的类型，所以不会。 (错误:参数类型“System.Collections.Generic.List”不可分配给模型类型“System.Collections.Generic.IEnumerable”)。那么我应该如何映射这两个列表呢？

Controller

 public ActionResult MyData()
    {
        var oldList = db.oldList.Select(x=>x.Name).ToList();

// probably here i should add var newList and in some way map with oldList then return to view

        return View(oldList);
    }

新建列表ViewModel

 public class NewListViewModel
    {
        public string Name { get; set; }
        public int Count { get; set; }
    }

我的 View (我的数据)

@model IEnumerable<MyApp.ViewModels.NewListViewModel>

<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.Name)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Count)
        </th>
    </tr>

    @foreach (var item in Model)
    {
        using (Html.BeginForm())
        {
            <tr>
                <td>
                    @Html.TextBoxFor(modelItem => item.Name)
                </td>
                <td>
                    @Html.TextBoxFor(modelItem => item.Count)
                </td>
            </tr>
        }
    }
</table>

Answer 1

你几乎成功了:

    public ActionResult MyData()
        {
            List<NewListViewModel> newList = 
                 db.oldList.Select(x=>new NewListViewModel { Name = x.Name}).ToList();

            return View(newList);
        }