asp.net-mvc - ASP.NET MVC 复选框问题

Question

存储库

命名空间 MvcApplication1.Models{ 公共(public)类 GroupRepository { EgovtDataContext db = new EgovtDataContext();

    public IQueryable<Group> FindAllGroups()
    {
     return db.Groups;
    }

    public IQueryable<Group> FindGroups()
    {
        return from Group in FindAllGroups()
               orderby Group
               select Group;
    }



    public Group GetGroups(int id)
    {
        return db.Groups.SingleOrDefault(d => d.int_GroupId == id);
    }

    //


    public void Add(Group group)
    {
        db.Groups.InsertOnSubmit(group);
    }

    public void Delete(Group group)
    {

        db.Groups.DeleteOnSubmit(group);
    }

    //
    // Persistence 

    public void Save()
    {
        db.SubmitChanges();
    } 

}

Controller

public ActionResult Index()
    {

        GroupRepository grouprepository = new GroupRepository();

        ViewData["Group"] = grouprepository.FindGroups();

        return View();

    }

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


<% foreach (Group i in ViewData["Group"] as List<Group>)

{ %>

   <input type="checkbox" name="Inhoud" 
          value="<%= i.int_GroupId %>" checked="checked" />

<% } %>  

问题是它无法找到组 ID 并显示以下错误。解决方案是什么？

CS1061: 'System.Text.RegularExpressions.Group' does not contain a definition for 'int_GroupId' and no extension method 'int_GroupId' accepting a first  argument of type 'System.Text.RegularExpressions.Group' could be found  (are you missing a using directive or an assembly reference?)

Answer 1

尝试使用 FindGroups() 使用的类型的命名空间，如下所示:

<% foreach (var i in ViewData["Group"] as List<MyNamespace.Blah.Group>)
   { %>
       <input type="checkbox" name="Inhoud" 
              value="<%= i.int_GroupId %>" checked="checked" />
<% } %>  

或将命名空间引用添加到您的 Web.Config 或将命名空间添加到您的页眉。我认为您仍然会与“System.Text.RegularExpressions”发生命名空间冲突。

使用 LINQ 的 MVC 风格外观

(ViewData["Group"] as List<MyNamespace.Blah.Group>)
    .ForEach(g => Response.Write(
        Html.CheckBox("Inhoud", true, new { value = g.int_GroupId })));