我有一个模型，其中包含我想使用 EditorFor 的 QuestionEditModel 列表。
通常，我只会在集合上调用 EditorFor，然后 MVC 会完成剩下的工作。但是，我需要单独的 QuestionEditModel 使用不同的 EditorTemplates，具体取决于对象中字段的值。
我会认为这样做的方法是这样的
<%: Html.EditorFor(model=>model.Questions), [fieldname from individual question] %>
但我不知道如何告诉它查看当前选择的问题并使用问题中的 EntryType 字段来确定要使用的 EditorTemplate。
所以我尝试了这个
<% foreach (Reviewer.Models.QuestionEditModel qem in Model.Questions)
{
Html.EditorFor(q=>qem, qem.EntryType, null);
} %>
但这不会在页面上呈现任何内容。奇怪的是，如果我设置断点并运行代码，这确实会调用正确的 EditorTemplate，传入正确的模型数据并且没有异常，但它不会渲染任何内容。
在这种情况下，我需要做一些额外的工作来让渲染的 EditorTemplate 回到我的页面吗？
编辑：
编辑视图的完整代码。
<% using (Html.BeginForm()) {%>
<%: Html.ValidationSummary(true) %>
<%: Html.HiddenFor(model=>model.AcadPeriod) %>
<%: Html.HiddenFor(model=>model.ReviewID) %>
<%: Html.HiddenFor(model=>model.ReviewName) %>
<%: Html.HiddenFor(model=>model.CategoryID) %>
<%: Html.HiddenFor(model=>model.CategoryName) %>
<%-- Categories not getting returned in model for some reason. Use EditorFor or DisplayFor instead of loop? --%>
<%: Html.HiddenFor(model=>model.Categories) %>
<%: Html.HiddenFor(model=>model.ClassificationID) %>
<%: Html.HiddenFor(model=>model.ClassificationName) %>
<div style="width:100%">
<div style="float:left">
<ul style="list-style-type:none">
<% for (int i = 0; i < Model.Categories.Count(); i++)
{ %>
<li style="background-color:Gray; border: 1px solid black; padding: 3px 3px 3px 3px; margin-bottom: 2px">
<%: Html.ActionLink(Model.Categories[i].name, "Edit", new { AcadPeriod = Model.AcadPeriod, ClassificationID=Model.ClassificationID, ReviewID=Model.ReviewID, CategoryID=Model.Categories[i].category_id })%>
</li>
<% }%>
</ul>
</div>
</div>
<% foreach (Reviewer.Models.QuestionEditModel qem in Model.Questions) { %>
<%: Html.EditorFor(q=>qem, qem.EntryType,null); %>
<% } %>
<p>
<input type="submit" value="Save" />
</p>
<% } %>
编辑2：
根据要求完成视图、控制器和模板代码。
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Reviewer.Models.ReviewEditModel>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Edit
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h1><%: Model.AcadPeriod %> > <%: Model.ClassificationName %> > <%: Model.ReviewName %></h1>
<% using (Html.BeginForm()) {%>
<%: Html.ValidationSummary(true) %>
<%: Html.HiddenFor(model=>model.AcadPeriod) %>
<%: Html.HiddenFor(model=>model.ReviewID) %>
<%: Html.HiddenFor(model=>model.ReviewName) %>
<%: Html.HiddenFor(model=>model.CategoryID) %>
<%: Html.HiddenFor(model=>model.CategoryName) %>
<%-- Categories not getting returned in model for some reason. Use EditorFor or DisplayFor instead of loop? --%>
<%: Html.HiddenFor(model=>model.Categories) %>
<%: Html.HiddenFor(model=>model.Questions) %>
<%: Html.HiddenFor(model=>model.ClassificationID) %>
<%: Html.HiddenFor(model=>model.ClassificationName) %>
<div style="width:100%">
<div style="float:left;width: 15%">
<ul style="list-style-type:none">
<% for (int i = 0; i < Model.Categories.Count(); i++)
{ %>
<li style="background-color:Gray; border: 1px solid black; padding: 3px 3px 3px 3px; margin-bottom: 2px">
<%: Html.ActionLink(Model.Categories[i].name, "Edit", new { AcadPeriod = Model.AcadPeriod, ClassificationID=Model.ClassificationID, ReviewID=Model.ReviewID, CategoryID=Model.Categories[i].category_id })%>
</li>
<% }%>
</ul>
</div>
<div style="float:left; width: 80%; margin-left: 5px">
<% foreach (Reviewer.Models.QuestionEditModel qem in Model.Questions) { %>
<%: Html.EditorFor(q=>qem, qem.EntryType,null) %>
<% } %>
</div>
</div>
<div style="clear:both" />
<p>
<input type="submit" value="Save" />
</p>
<% } %>
<div>
<%: Html.ActionLink("Back to List", "Index") %>
</div>
</asp:Content>
编辑器模板：
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Reviewer.Models.QuestionEditModel>" %>
<div style="width:100%; border: 1px solid black">
<div style="width: 100%; border: 1px solid black"><h2><%: Model.QuestionName %></h2></div>
<div style="width:25%; display:inline; border: 1px solid black; float:left">
<%: Model.QuestionText %>
</div>
<div style="width:70%; border: 1px solid black; float:left">
<%: Html.TextAreaFor(model=>model.Answer) %>
<%:Html.ValidationMessageFor(model=>model.Answer) %>
</div>
<div style="clear:both" />
</div>
<fieldset>
<legend>TEXT</legend>
<div class="editor-label">
<%: Html.LabelFor(model => model.QuestionID) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.QuestionID) %>
<%: Html.ValidationMessageFor(model => model.QuestionID) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.QuestionName) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.QuestionName) %>
<%: Html.ValidationMessageFor(model => model.QuestionName) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.QuestionText) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.QuestionText) %>
<%: Html.ValidationMessageFor(model => model.QuestionText) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.DefaultText) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.DefaultText) %>
<%: Html.ValidationMessageFor(model => model.DefaultText) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.EntryType) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.EntryType) %>
<%: Html.ValidationMessageFor(model => model.EntryType) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.HelpText) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.HelpText) %>
<%: Html.ValidationMessageFor(model => model.HelpText) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Answer) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Answer) %>
<%: Html.ValidationMessageFor(model => model.Answer) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.OptionValue) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.OptionValue) %>
<%: Html.ValidationMessageFor(model => model.OptionValue) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.completedBy) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.completedBy) %>
<%: Html.ValidationMessageFor(model => model.completedBy) %>
</div>
Option Required: <%:Html.TextBoxFor(model=>model.OptionRequired) %>
Answer Required: <%: Html.TextBoxFor(model=>Model.AnswerRequired) %>
</fieldset>
编辑（GET）操作：
public ActionResult Edit(string AcadPeriod, string ClassificationID, string ReviewID, int CategoryID)
{
Reviewer.Models.ReviewEditModel dset1 = rr.GetReviewEditModel(AcadPeriod, ReviewID, CategoryID.ToString(), ClassificationID);
return View(dset1);
}
编辑（POST）操作：
[HttpPost]
public ActionResult Edit(Reviewer.Models.ReviewEditModel model)
{
try
{
foreach (Reviewer.Models.QuestionEditModel qem in model.Questions)
{
if (qem.Answer == null || qem.OptionValue == null) { qem.completedBy = this.HttpContext.User.Identity.Name; }
}
if (ModelState.IsValid)
{
rr.SaveReviewEditModel(model);
return RedirectToAction("Index");
}
else { return View(model); }
}
catch
{
return View(model);
}
}