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私は何をしようとしているかを示す記事やブログ記事を見てきました。しかし、私はそれがうまくいけば誰かがそれが動作するかどうかを確認したり、私が間違っていることを教えてくれるように働くことができませんでした。リスト<T>を含む複雑なモデルオブジェクトでASP.NET MVC UpdateModel（）を使用できますか？
バインドしようとしている「複雑な」モデル（InvoiceItemのリストを含む請求書）があり、リストオブジェクトの特定の属性と特定のアイテム/インデックスのみを更新したいと思います。私は主に、リストデータのインクルード/除外が機能するかどうかで問題が発生すると考えています。私が持っている
Public Class Invoice
Private _invoiceNumber As String
Private _invoiceDate As DateTime
Private _customerName As String
Private _items As List(Of InvoiceItem)
Public Property InvoiceNumber() As String
Get
Return _invoiceNumber
End Get
Set(ByVal value As String)
_invoiceNumber = value
End Set
End Property
Public Property InvoiceDate() As DateTime
Get
Return _invoiceDate
End Get
Set(ByVal value As DateTime)
_invoiceDate = value
End Set
End Property
Public Property CustomerName() As String
Get
Return _customerName
End Get
Set(ByVal value As String)
_customerName = value
End Set
End Property
Public Property Items() As List(Of InvoiceItem)
Get
Return _items
End Get
Set(ByVal value As List(Of InvoiceItem))
_items = value
End Set
End Property
End Class
Public Class InvoiceItem
Private _itemNumber As Integer
Private _description As String
Private _price As Decimal
Public Property ItemNumber() As Integer
Get
Return _itemNumber
End Get
Set(ByVal value As Integer)
_itemNumber = value
End Set
End Property
Public Property Description() As String
Get
Return _description
End Get
Set(ByVal value As String)
_description = value
End Set
End Property
Public Property Price() As Decimal
Get
Return _price
End Get
Set(ByVal value As Decimal)
_price = value
End Set
End Property
End Class
：私は、次のモデルを持っている...私のコードのすべては以下の通りです
を
Public Function Edit(ByVal id As String, ByVal values As FormCollection)
Dim invoice As Invoice = _getInvoice(id)
UpdateModel(invoice, "", New String() {"InvoiceDate", "CustomerName", "Items[0].Price"})
'Do some stuff...
End Function
を：私はそうのように、そのincludePropertiesでのUpdateModel（）を使用しようとしています以下の表示：
<%@ Page Title="" Language="VB" MasterPageFile="~/Views/Shared/Site.Master"
Inherits="System.Web.Mvc.ViewPage(Of MvcApplication2.Invoice)" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
<title>Edit</title>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Edit</h2>
<%=Html.ValidationSummary()%>
<% Using Html.BeginForm() %>
<fieldset>
<legend>Fields</legend>
<p>
<label for="InvoiceNumber">InvoiceNumber:</label>
<%= Html.TextBox("InvoiceNumber") %>
<%= Html.ValidationMessage("InvoiceNumber", "*") %>
</p>
<p>
<label for="InvoiceDate">InvoiceDate:</label>
<%= Html.TextBox("InvoiceDate") %>
<%= Html.ValidationMessage("InvoiceDate", "*") %>
</p>
<p>
<label for="CustomerName">CustomerName:</label>
<%= Html.TextBox("CustomerName") %>
<%= Html.ValidationMessage("CustomerName", "*") %>
</p>
<%For x As Integer = 0 To ViewData.Model.Items.Count - 1%>
<p>
<label for="Item<%=ViewData.Model.Items(x).ItemNumber %>">Item <%=ViewData.Model.Items(x).ItemNumber%>:</label>
<%=Html.Hidden("Items.Index", x)%>
<%=Html.TextBox(String.Format("Items[{0}].Description", x), ViewData.Model.Items(x).Description)%>
<%=Html.ValidationMessage("Description", "*")%>
<%=Html.TextBox(String.Format("Items[{0}].Price", x), ViewData.Model.Items(x).Price)%>
<%=Html.ValidationMessage("Price", "*")%>
</p>
<%Next x%>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
<% End Using %>
</asp:Content>
そして、ここでは私のコントローラである。
Public Class InvoicingController
Inherits System.Web.Mvc.Controller
Private Function _getInvoice(ByVal id As String) As Invoice
Dim invoice As New Invoice
invoice.InvoiceNumber = id
invoice.CustomerName = "John Doe"
invoice.InvoiceDate = DateTime.Now
invoice.Items = New List(Of InvoiceItem)
For x As Integer = 1 To 5
Dim item As InvoiceItem = New InvoiceItem
item.ItemNumber = x
item.Description = String.Format("Item {0}", x)
item.Price = 100 + x
invoice.Items.Add(item)
Next
Return invoice
End Function
<AcceptVerbs(HttpVerbs.Post)> _
Function Edit(ByVal id As String) As ActionResult
Dim invoice As Invoice = _getInvoice(id)
Return View(invoice)
End Function
'UpdateModel(invoice, "", New String() {"InvoiceDate", "CustomerName", "Items"}) 'NOTE: THis line appears to update any InvoiceItem attributes that are supplied
UpdateModel(invoice, "", New String() {"InvoiceDate", "CustomerName", "Items[0].Price"}) 'This line does not allow the first item's Price to be updated.
Return View()
End Function
End Class
ありがとうございます！