C# MVC 返回 View (对象)导致查询字符串？

Question

我有这个 actionresult 方法:

public ActionResult MenuItemCreated(MenuItem item)
{
    return View(item);
}

这是我的观点:

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MenuItem>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    MenuItemCreated
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

    <h2>MenuItemCreated</h2>

    <%: Model.Caption %> is created succesfully
</asp:Content>

我在页面上看到的是正确的(测试创建成功)。但是我的查询字符串看起来像这样:

http://localhost:62602/Admin/MenuItemCreated/2?Caption=test&Link=%2Fclient

编辑:从此方法调用 ActionResult:

public ActionResult CreateMenuItem(FormCollection fc)
{
    MenuItem menuItem = CreateMenuItemFrom(fc);
    SaveMenuItem(menuItem);

    return RedirectToAction("MenuItemCreated", menuItem);
}

编辑二:

对应 View :

<% using (Html.BeginForm("CreateMenuItem","Admin",FormMethod.Post)) {%>
    <%: Html.ValidationSummary(true) %>

    <fieldset>
        <legend>Fields</legend>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.Caption) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.Caption) %>
            <%: Html.ValidationMessageFor(model => model.Caption) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.Link) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.Link) %>
            <%: Html.ValidationMessageFor(model => model.Link) %>
        </div>

        <div class="editor-label">
            <%: Html.LabelFor(model => model.ParentId) %>
        </div>
        <div class="editor-field">
            <%: Html.TextBoxFor(model => model.ParentId) %>
            <%: Html.ValidationMessageFor(model => model.ParentId) %>
        </div>

        <p>
            <input type="submit" value="Create MenuItem" />
        </p>
    </fieldset>

<% } %>

这是为什么？我不想显示查询字符串。

Answer 1

问题出在下面一行:

return RedirectToAction("MenuItemCreated", menuItem);

执行重定向时，您不能像这样传递复杂的对象。只有简单的标量属性:

return RedirectToAction("MenuItemCreated", new {
    id = menuItem.Id
});

然后在您要重定向的操作中获取给定 id 的相应菜单项模型:

public ActionResult MenuItemCreated(int id)
{
    var menuItem = _someRepository.GetMenuItem(id);
    ...
}