我在表单上绑定多个模型时遇到问题.我有一个投诉表单,包括投诉信息以及一对多投诉人.我正在提交表单,但我收到绑定的错误. ModelState.IsValid总是返回false. @H_301_2@如果我调试和查看ModelState错误,我得到一个说法：
“EntityCollection已经被初始化了,只有调用InitializeRelatedCollection方法才能在反序列化对象图时初始化一个新的EntityCollection”.

@H_301_2@另外,在调试时,我可以看到投诉模型由投诉人填写,因此似乎部分正在运作.

@H_301_2@我不知道我在做什么是不可能使用默认的ModelBinder,或者如果我不是正确的方式.我似乎没有找到任何具体的例子或文件.在stackoverflow here中可以找到一个非常类似的问题,但它似乎不处理强类型的视图.

@H_301_2@控制器代码：

public ActionResult Edit(int id)
    {
        var complaint = (from c in _entities.ComplaintSet.Include("Complainants")
                     where c.Id == id
                     select c).FirstOrDefault();

        return View(complaint);
    }

    //
    // POST: /Home/Edit/5
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(Complaint complaint)
    {
        if (!ModelState.IsValid)
        {
            return View();
        }
        try
        {
            var originalComplaint = (from c in _entities.ComplaintSet.Include("Complainants")
                                     where c.Id == complaint.Id
                                     select c).FirstOrDefault();
            _entities.ApplyPropertyChanges(originalComplaint.EntityKey.EntitySetName,complaint);
            _entities.SaveChanges();
            return RedirectToAction("Index");
        }
        catch
        {
            return View();
        }
    }

@H_301_2@查看代码(这是由创建/编辑视图调用的部分视图,这也是强制类型的投诉)：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<ProStand.Models.Complaint>" %>

<%= Html.ValidationSummary() %>
<% using (Html.BeginForm()) {%>

<table cellpadding="0" cellspacing="0" class="table">
    <tr>
        <td>
        <label for="DateReceived">Date Received:</label>
            <%= Html.TextBox("DateReceived") %>
            <%= Html.ValidationMessage("DateReceived","*") %>    
        </td>
        <td>
            <label for="DateEntered">Date Entered:</label>
            <%= Html.TextBox("DateEntered")%>
            <%= Html.ValidationMessage("DateEntered","*") %>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Concluded">Concluded:</label>
            <%= Html.CheckBox("Concluded")%>
            <%= Html.ValidationMessage("Concluded","*") %>
            </td>
        <td>
            <label for="IncidentDate">Incident Date:</label>
            <%= Html.TextBox("IncidentDate")%>
            <%= Html.ValidationMessage("IncidentDate","*") %></td>
    </tr>
</table>
    <hr />
    <table>
    <% if (Model != null) {
           int i = 0;
       foreach (var complainant in Model.Complainants){ %>
       <%= Html.Hidden("Complainants[" + i + "].Id",complainant.Id)%>
    <tr>
        <td>
            <label for="Surname">Surname:</label>

            <%= Html.TextBox("Complainants[" + i + "].Surname",complainant.Surname)%>
            <%= Html.ValidationMessage("Surname","*")%>
        </td>
        <td>
            <label for="GivenName1">GivenName1:</label>
            <%= Html.TextBox("Complainants[" + i + "].GivenName1",complainant.GivenName1)%>
            <%= Html.ValidationMessage("GivenName1","*")%>
        </td>
    </tr>
    <% i++; %>
    <% }} %>
    <tr>
        <td colspan=2>
            <input type="submit" value="Submit" />
        </td>
    </tr>
</table>
<% } %>
<div>
    <%=Html.ActionLink("Back to List","Index") %>
</div>

<%= Html.TextBox("Complainants[" + i + "].Surname",complainant.Surname)%>

<%= Html.TextBox("Complaint.Complainants[" + i + "].Surname",complainant.Surname)%>