asp.net-mvc - MVC错误: model item of type 'System.Collections.Generic.IEnumerable` 1 required

Question

我正在对系统进行一些修改，并且遇到了一个异常，我希望有人可以帮助解决？我收到的错误如下:

Exception Details: System.InvalidOperationException: The model item passed into the dictionary is of type 'System.Collections.Generic.List1[System.String]',
but this dictionary requires a model
item of type
'System.Collections.Generic.IEnumerable1[MyApp.Data.aspnet_Users]'.

基本上我想要做的是显示非事件用户的列表。这是我为此编写的 Controller :

public ActionResult InactiveUsers()
        {
            using (ModelContainer ctn = new ModelContainer())
            {
                aspnet_Users users = new aspnet_Users();

                DateTime duration = DateTime.Now.AddDays(-3);

                var inactive = from usrs in ctn.aspnet_Users
                    where usrs.LastActivityDate <= duration
                    orderby usrs.LastActivityDate ascending
                    select usrs.UserName;

                return View(inactive.ToList());
            }

        }

从这里我添加了一个部分 View 。如果有人感兴趣的话，这是它的代码。只是通常的添加 View --> 列表。

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<IEnumerable<MyApp.Data.aspnet_Users>>" %>

    <table>
        <tr>
            <th></th>
            <th>
                ApplicationId
            </th>
            <th>
                UserId
            </th>
            <th>
                UserName
            </th>
            <th>
                LoweredUserName
            </th>
            <th>
                MobileAlias
            </th>
            <th>
                IsAnonymous
            </th>
            <th>
                LastActivityDate
            </th>
        </tr>

    <% foreach (var item in Model) { %>

        <tr>
            <td>
                <%: Html.ActionLink("Edit", "Edit", new { id=item.UserId }) %> |
                <%: Html.ActionLink("Details", "Details", new { id=item.UserId })%> |
                <%: Html.ActionLink("Delete", "Delete", new { id=item.UserId })%>
            </td>
            <td>
                <%: item.ApplicationId %>
            </td>
            <td>
                <%: item.UserId %>
            </td>
            <td>
                <%: item.UserName %>
            </td>
            <td>
                <%: item.LoweredUserName %>
            </td>
            <td>
                <%: item.MobileAlias %>
            </td>
            <td>
                <%: item.IsAnonymous %>
            </td>
            <td>
                <%: String.Format("{0:g}", item.LastActivityDate) %>
            </td>
        </tr>

    <% } %>

    </table>

    <p>
        <%: Html.ActionLink("Create New", "Create") %>
    </p>

为了完整起见，这里是我渲染部分内容的索引页面:

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

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

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

    <h2>Index</h2>

    <% Html.RenderAction("InactiveUsers"); %>

</asp:Content>

<asp:Content ID="Content3" ContentPlaceHolderID="Header" runat="server">
</asp:Content>

如果有人有任何建议，我将非常感激:)

Answer 1

嗨，我认为这是因为在您的部分 View 中类型是 System.Web.Mvc.ViewUserControl<IEnumerable<MyApp.Data.aspnet_Users>>但您选择用户名

select usrs.UserName;

return View(inactive.ToList());

尝试更改它以选择用户；但不是 usrs.UserName