Question

我正在尝试使用ASP.Net MVC（C＃）发布表单。发布表单时，没有数据到达控制器。视图模型保持其初始化状态。

您可以在下面看到发布的表单数据（从Chrome开发人员工具中复制）但是当它到达控制器时，那里什么都没有：

Triage.ClaimNumber:Test-001
Triage.PropertyAgeId:1
Triage.RoomNumber:1
Triage.Rooms[0].RoomHeight:3
Triage.Rooms[0].RoomWidth:3
Triage.Rooms[0].RoomLength:4
Triage.Rooms[0].CleaningRequired:False
Triage.Rooms[0].DryingRequired:False
Triage.Rooms[0].CeilingDamaged:True
Triage.Rooms[0].WallsDamaged:False
Triage.Rooms[0].FloorDamaged:False
Triage.Rooms[0].KitchenDamaged:False
Triage.Rooms[0].BathroomDamaged:False
Triage.Rooms[0].Ceiling.CeilingTypeId:66
Triage.Rooms[0].Ceiling.AmountDamaged:0.10
Triage.Rooms[0].Ceiling.Papered:False

名称约定适用于模型绑定自动执行，任何人都可以帮助我解释数据未被发布的原因吗？

以下是viewmodels的示例：

天花板视图模型

public class TriageCeilingViewModel
{
    [DisplayName("Ceiling type")]
    public int CeilingTypeId { get; set; }

    [Required(ErrorMessage = "Please enter the amount of damage to the ceiling")]
    [DisplayName("% Amount damaged")]
    public decimal AmountDamaged { get; set; }

......
}

分类视图模型

public class TriageRoomViewModel
{
    private Repository _data = new Repository();

    public List<CeilingTypeList> CeilingTypes
    {
        get
        {
            return _data.GetCeilingTypes();
        }
    }

    [Required()]
    [DisplayName("Height (m)")]
    public decimal RoomHeight { get; set; }

    [Required(ErrorMessage = "Is the ceiling damaged?")]
    [DisplayName("Ceiling damaged?")]
    public bool CeilingDamaged { get; set; }


    public TriageCeilingViewModel Ceiling = new TriageCeilingViewModel();

    ........
}

索引视图模型

public class TriageViewModel
{
    private readonly Repository _data = new Repository();

    public List<PropertyAgeList> PropertyAges
    {
        get
        {
            return _data.GetPropertyAges();
        }
    }

    [Required(ErrorMessage = "Please enter the claim number")]
    [StringLength(12, ErrorMessage = "The claim number must be 12 digits or less")]
    [DisplayName("Claim Number")]
    public string ClaimNumber { get; set; }

    public List<TriageRoomViewModel> Rooms = Enumerable.Range(0, 4).Select(i => new TriageRoomViewModel()).ToList();

    ........
}

TriageIndexViewModel

public class TriageIndexViewModel
{
     public TriageViewModel = new TriageViewModel();
}

Index.cshtml

@using (Html.BeginForm("Index", "Home", FormMethod.Post))
{
    @Html.AntiForgeryToken()

    @for (int i = 0; i < 4; i++)
    {
        ViewBag.RoomNumber = i;
        @Html.EditorFor(m=>m.Triage.Rooms[i])
    }
}

TriageRoomViewModel.cshtml

@model BuildingsTriage.TriageRoomViewModel

<div class="panel-body">
<div class="row">
    <div class="col-md-12">
        <div class="row">
            <div class="col-md-4 form-group @(ViewData.ModelState.IsValidField(Html.IdFor(m=>m.RoomHeight).ToString()) ? null : "has-error")">
                @Html.LabelFor(m => m.RoomHeight, new { @class="room" + i + " control-label" })
                @Html.EditorFor(m => m.RoomHeight, new { htmlAttributes = new { @class="room" + i + " form-control", type = "text" }, })
                @Html.ValidationMessageFor(m => m.RoomHeight)
            </div>
            <div class="col-md-4 form-group @(ViewData.ModelState.IsValidField(Html.IdFor(m=>m.RoomWidth).ToString()) ? null : "has-error")">
                @Html.LabelFor(m => m.RoomWidth, new { @class="room" + i + " control-label" })
                @Html.EditorFor(m => m.RoomWidth, new { htmlAttributes = new { @class="room" + i + " form-control", type = "text" }, })
                @Html.ValidationMessageFor(m => m.RoomWidth)
            </div>
            <div class="col-md-4 form-group @(ViewData.ModelState.IsValidField(Html.IdFor(m=>m.RoomLength).ToString()) ? null : "has-error")">
                @Html.LabelFor(m => m.RoomLength, new { @class="room" + i + " control-label" })
                @Html.EditorFor(m => m.RoomLength, new { htmlAttributes = new { @class="room" + i + " form-control", type = "text" }, })
                @Html.ValidationMessageFor(m => m.RoomLength)
            </div>
        </div>
    </div>
</div>

Answer 1

您正在使用字段而不是属性。由于TriageIndexViewModel不是属性，因此没有任何降低可以正确绑定。

您需要将所有字段更改为属性，并将其初始化移动到零参数构造函数中。

Answer 2

您的index post方法接受TriageIndexViewModel。您尚未在上面的视图模型中对此进行定义。这可能是问题吗？你的控制器是期待这个视图模型，但你在表单上传递了另一个？

表格未将数据发回控制器

2 个答案: