所以我已经阅读了很多关于此的问题，似乎无法找到相关性。我有一个视图模型，包含另一个模型，有几个集合 - 你猜对了 - 更多模型：
Public Class FeeTemplateViewModel
Public Property FeeSetup As FeeSetupModel
Public Property TemplateId As Integer
Public Property Name As String
Public Property CompanyId As Integer
Public Property GroupId As Integer
Public Property Users As Integer
Public Property CreateDate As DateTime
Public Property Modified As DateTime
Public Property CreatedBy As String
End Class
Public Class FeeSetupModel
<DisplayName("Office Id")>
Property OfficeId() As String
<DisplayName("Office Name")>
Property OfficeName() As String
<DisplayName("Current Fees")>
Property CurrentFees() As IEnumerable(Of FeeItemModel)
<DisplayName("Minimum Preparer Fee")>
Public Property MinPFee As Decimal
Public Property AvailableFees As List(Of FeeListItem)
Public Property CustomFees As List(Of CustomFee)
End Class
当我从视图回发到控制器时，FeeSetup为空，我无法确定原因。
控制器：
<HttpPost()>
Function Edit(model As FeeTemplateViewModel) As ActionResult
ModelState.Clear()
If String.IsNullOrEmpty(model.Name) Then
ModelState.AddModelError("Name", "Template name is required")
End If
If Not ModelState.IsValid Then
Return View("Edit", model)
End If
Save(model)
Return View("Edit")
End Function
ModelState错误：
{＆＃34;参数转换类型＆＃39; System.String＆＃39;输入＆＃39; ProAvalon.Models.Configuration.FeeSetupModel＆＃39;失败，因为没有类型转换器可以在这些类型之间进行转换。＆＃34;}
查看：
@Using Html.BeginForm("Edit", "FeeTemplate", Nothing, FormMethod.Post, Nothing)
@<div>
@Html.HiddenFor(Function(m) m.FeeSetup)
@If Model.TemplateId > 0 Then
@<p><strong>Last Modified:</strong>@Model.Modified.ToLocalTime</p>
End If
<div class="inputsection col-md-14" id="options">
<div class="row">
<div>
@Html.LabelFor(Function(m) m.Name, "Template Name")
@Html.EditorFor(Function(m) m.Name, "TemplateName")
</div>
</div>
@Html.ValidationMessageFor(Function(m) m.Name)
<div style="height:50px;line-height:50px;">
<div id="status-bar" style="display:none">
<span style="font-size:16px; margin-left:5px; font-weight:bold; color: #333;" />
</div>
</div>
<div class="clearfix" />
<div id="fee-grid-wrapper" style="min-height:500px;">
<table id="fee-grid" class="table table-striped table-condensed table-bordered table-fixed-header">
<thead>
<tr class="alert-info">
<th style="border:none;vertical-align:top;text-transform:uppercase;">
<strong>Filter Forms</strong>
</th>
<th style="border: none; vertical-align: top;" colspan="3">
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12" style="padding:0 5px">
<input name="filter" type="radio" checked="checked" data-filter="" /> All forms
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" style="padding:0 5px">
<input name="filter" type="radio" data-filter="fd" /> Federal Forms <br />
<input name="filter" type="radio" id="state-forms" /> State Forms
<div style="display:none" id="state-form-picker" class="state-picker">
@Html.DropDownListFor(Function(m) i, ProAvalon.PageHelpers.StateSelectList)
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" style="padding:0 5px" id="search-target">
</div>
</th>
</tr>
<tr style="background:#eee">
<th style="cursor:pointer">No.</th>
<th style="cursor:pointer">Fed/St</th>
<th style="cursor:pointer">Form/Schedule Name</th>
<th style="cursor:pointer">Amount</th>
</tr>
</thead>
<tfoot>
<tr style="background:#eee">
<th>No.</th>
<th>Fed/St</th>
<th>Form/Schedule Name</th>
<th style="min-width:300px">Amount</th>
</tr>
</tfoot>
<tbody>
@If Model.FeeSetup.AvailableFees IsNot Nothing Then
For Each fee In Model.FeeSetup.AvailableFees
@Html.HiddenFor(Function(m) fee)
@Code
Dim tmp As ProAvalon.Models.Configuration.FeeItemModel = Model.FeeSetup.CurrentFees.Where(Function(x) x.FormName = fee.FormName).FirstOrDefault()
Dim amount = 0D
If (tmp IsNot Nothing) Then amount = tmp.FeeAmount
i = i + 1
Html.HiddenFor(Function(m) tmp)
End Code
@<tr data-id="@(fee.FormName)">
<td>@(i) </td>
<td>@(IIf(fee.FormType = "FD", fee.FormType, IIf(fee.FormType = "BS", fee.FormState + "-BS", fee.FormState)))</td>
<td>@(fee.FormDesc)</td>
<td style="min-width:300px">
<span style="display:none">@amount</span> @*to enable sorting*@
@Html.TextBoxFor(Function(m) amount)
@*@(New HtmlString("<span>" + _
Html.TextBox("Amount_" + fee.FormName.ToString(), CType(amount, Decimal), _
New With {.class = "pull-left currency_input currencyTB amount_" + fee.FormName}).ToHtmlString() + _
"<span id=""msg_" + fee.FormName + """ style='display:none; line-height:35px;padding-left:10px;'></span></span>"))*@
</td>
</tr>
Next
End If
</tbody>
</table>
</div>
</div>
</div>
@<br />
@<div>
<hr />
<div class="float-right" style="margin-left: 20pt">
@Html.SubmitButton()
</div>
<div>
@Html.CancelButton("Index", "FeeTemplate")
</div>
<div class="clear clearfix" />
</div>
End Using
如果你们中的一个人看到这个并发现命名重叠，我会感觉自己像个真正的混蛋，但我已经多次查看了它并且无法确定是否是原因。
答案 0 :(得分：0)
首先，列表绑定对此不起作用：
For Each fee In Model.FeeSetup.AvailableFees
您需要使用index：
For index As Integer = 0 To Model.FeeSetup.AvailableFees.Length
@Html.HiddenFor(Function(m) m.FeeSetup.AvailableFees[index])
Next