列表未在 ASP.NET Core 中绑定模型

Question

我的视图中有一张表格，如下所示。列表

Model.SchoolList

有 2 条记录，并且正在按预期显示。下面是我的代码的简化版本。

模型类：

public class SchoolViewModel
{ 
    public SchoolTableModel SchoolUser { get; set; }
}

public class SchoolTableModel
{ 
    public List<SchoolDetails> SchoolList { get; set; }
}

public class SchoolDetails
{
    public string SchoolId { get; set; }
    public string Name { get; set; }
    public string Type { get; set; }
}

查看：

@model SchoolProj.ViewModels.SchoolViewModel

<form id = "formSchool">
    <div class="table-responsive">
        <table id="tblSchool" class="table table-responsive">
            <thead>
                <tr>
                    <th width="50%">Name</th>
                    <th width="50%">Type</th>                        
                </tr>
            </thead>
            <tbody>
            @if (Model != null && Model.SchoolUser.SchoolList != null && Model.SchoolUser.SchoolList.Count() > 0)
            {
                @for (int i = 0; i < Model.SchoolUser.SchoolList.Count; i++)
                {
                     <tr>
                        <td>
                            <input type="hidden" asp-for= "@Model.SchoolUser.SchoolList[i].SchoolId" />
                            @Model.SchoolUser.SchoolList[i].Name
                        </td>
                       
                        <td>
                            @Model.SchoolUser.SchoolList[i].Type
                        </td>
                        
                     </tr>                           
                }
            }
        </tbody>
        </table>
    </div>
    <div class="row">
        <div class="col-md-12">
            <input type="submit" id="btnsubmit" class="btn btn-default" value="Save" />
        </div>
    </div>
</form>

我的控制器代码如下：

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create(SchoolViewModel schoolViewModel)
{
}

提交后，

schoolViewModel.SchoolUser.SchoolList

在控制器中显示为空。难道我不应该接收带有 2 个

schoolViewModel.SchoolUser.SchoolList

值的

SchoolId

因为我已经在隐藏字段中绑定了模型参数吗？

Answer 1

就像

SchoolId

已包含在上下文中一样，也有必要添加

Name

和

Type

：

@for (int i = 0; i < Model.SchoolUser.SchoolList.Count; i++)
{
    <tr>
        <td>
            <input type="hidden" asp-for="@Model.SchoolUser.SchoolList[i].SchoolId" />
            <input type="hidden" asp-for="@Model.SchoolUser.SchoolList[i].Name" />
            @Model.SchoolUser.SchoolList[i].Name
        </td>
        <td>
            <input type="hidden" asp-for="@Model.SchoolUser.SchoolList[i].Type" />
            @Model.SchoolUser.SchoolList[i].Type
        </td>
    </tr>
}

<form>

标签的方法应根据操作方法定义为

POST

：

<form asp-action ="Create" method="post">
    @Html.AntiForgeryToken()