谷歌搜索一般和 SO 还没有帮助我，所以：
我正在从头开始构建我的第一个 MVC 应用程序，使用MVC Music Store 示例，而是构建一个小应用程序，可以在其中创建竞技场战士并让他们互相战斗。（Fighters并Fight已通过 EF 链接到基础表）。
Fighters我对和都有控制器Fights。编辑Actionresult为Fights有效，但Fighters它不是。当我点击按钮保存我的更改时，我返回相关的索引页面，但没有提交任何更改。这是我的问题：为什么会失败？
来自BarracksController，带有错误的非更新 HttpPost 编辑（应该被命名为 FighterController，但没关系）：
//
// GET: /Barracks/Edit
public ActionResult Edit(int id)
{
ViewData.Model = _FightDb.Fighters.Single(f => f.Id == id);
return View();
}
//
// POST: /Barracks/Edit
[HttpPost]
public ActionResult Edit(int id, FormCollection collection)
{
var fighter = _FightDb.Fighters.Single(f => f.Id == id);
try
{
UpdateModel(fighter, "Fighter");
var x = ViewData.GetModelStateErrors();
_FightDb.SaveChanges();
return RedirectToAction("Index");
}
catch
{
var viewModel = fighter;
return View(viewModel);
}
}
（如您所见，我已经包含了这个 SO question 中的 GetModelStateErrors 技巧，但 x 的结果是null）
这是可以工作的控制器，FightController：
//
// GET: /Fights/Edit
public ActionResult Edit(int id)
{
var viewModel = new FightDetailsViewModel
{
Fight = _FightDb.Fights.Single(f => f.ID == id),
Fighters = _FightDb.Fighters.ToList()
};
return View(viewModel);
}
//
// POST: /Fights/Edit
[HttpPost]
public ActionResult Edit(int id, FormCollection collection)
{
var fight = _FightDb.Fights.Single(f => f.ID == id);
try
{
UpdateModel(fight, "Fight");
_FightDb.SaveChanges();
return RedirectToAction("Index");
}
catch
{
var viewModel = new FightDetailsViewModel
{
Fight = _FightDb.Fights.Single(f => f.ID == id),
Fighters = _FightDb.Fighters.ToList()
};
return View(viewModel);
}
}
这是战士的edit.aspx：（评论后编辑）
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Mvc3_EF_BW_Fight.Models.Fighter>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server">
<h2>Edit</h2>
<%: Html.EditorForModel() %>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="head" runat="server">
</asp:Content>
在 Shared 中使用以下 Fighter.ascx：
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Mvc3_EF_BW_Fight.Models.Fighter>" %>
<% using (Html.BeginForm())
{%>
<%: Html.ValidationSummary(true) %>
<fieldset>
<legend>Fighter</legend>
<div class="editor-label">
<%: Html.LabelFor(model => model.Id) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Id) %>
<%: Html.ValidationMessageFor(model => model.Id) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.FighterName) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.FighterName) %>
<%: Html.ValidationMessageFor(model => model.FighterName) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.FighterStyleDescription) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.FighterStyleDescription) %>
<%: Html.ValidationMessageFor(model => model.FighterStyleDescription) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.FighterLongDescription) %>
</div>
<div class="editor-field">
<%: Html.TextAreaFor(model => model.FighterLongDescription) %>
<%: Html.ValidationMessageFor(model => model.FighterLongDescription) %>
</div>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
<% } %>
这是战斗的 edit.aspx
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Mvc3_EF_BW_Fight.ViewModels.FightDetailsViewModel>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server">
<h2>Edit</h2>
<%: Html.EditorFor(model => model.Fight, new { Fighters = Model.Fighters })%>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="head" runat="server">
</asp:Content>
这是 Fight.ascx：
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Mvc3_EF_BW_Fight.Models.Fight>" %>
<% using (Html.BeginForm())
{%>
<%: Html.ValidationSummary(true) %>
<fieldset>
<legend>Fields</legend>
<div class="editor-label">
<%: Html.LabelFor(model => model.ID) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.ID) %>
<%: Html.ValidationMessageFor(model => model.ID) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.FightName) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.FightName) %>
<%: Html.ValidationMessageFor(model => model.FightName) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Fighter1ID) %><br />
<%: Html.LabelFor(model => model.Fighter1Reference.Value.FighterName)%>
</div>
<div class="editor-field">
<%: Html.DropDownList("Fighter1ID", new SelectList(ViewData["Fighters"] as IEnumerable, "ID", "FighterName", Model.Fighter1ID))%>
<%: Html.ValidationMessageFor(model => model.Fighter1ID) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Fighter2ID) %>
</div>
<div class="editor-field">
<%: Html.DropDownList("Fighter1ID", new SelectList(ViewData["Fighters"] as IEnumerable, "ID", "FighterName", Model.Fighter1ID))%>
<%: Html.ValidationMessageFor(model => model.Fighter2ID) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Fighter1Login) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Fighter1Login) %>
<%: Html.ValidationMessageFor(model => model.Fighter1Login) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Fighter2Login) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Fighter2Login) %>
<%: Html.ValidationMessageFor(model => model.Fighter2Login) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.FightStatusID) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.FightStatusID) %>
<%: Html.ValidationMessageFor(model => model.FightStatusID) %>
</div>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
<% } %>
这是我的战斗视图模型：
public class FightDetailsViewModel
{
public Fight Fight { get; set; }
public List<Fighter> Fighters { get; set; }
}
没有用于 Fighters 的 ViewModel（无论如何，在这种情况下都没有涉及）。
我可以发布您可能希望看到的任何代码。
编辑：我已经查看了Using ViewModel Pattern with MVC 2 Strongly Typed HTML Helpers和ASP.NET MVC 2 UpdateModel() is not updated values in memory or database，但我还没有看到解决方案。