Question

我有一个复杂的View。它包含4 Models的数据。模型都是静态的，并按预期工作。我创建了一个ViewModel来尝试只显示该视图所需的数据。它由竞争对手和他们参与的一些复杂的课程和活动组成。

我制作了一个复杂的ViewModel。当我走过Controller时，我可以看到所有三个部分都是从ViewModel构建的。其中包括数据。当我尝试使用Intellesense中的View映射值时，它无法知道此数据，或者没有来自复杂ViewModel的映射。我这样做了吗？我尝试了几种方法将这些值映射到View。我想我需要initialize或map来自Models的值，我只是无法弄清楚如何。
请告知如何将这些值，数据元素映射到视图。

视图模型：

Compeditor是直接到DB的实际模型其余数据从多个表中收集并传递给控制器视图

namespace eManager.Web2.Models
{
    public class CompDetailPlus

    {
        public CompDetailPlus()
    {
        this.Compeditor = new Compeditor();


    }
        public virtual Compeditor Compeditor { get; set; }
        public virtual IEnumerable<InEventClass> InEventClass { get; set; }
        public virtual IEnumerable<AllEventClasses> AllEventClasses { get; set; }

    }

public class Compeditor
    {
        [Key]
        public virtual int CompeditorId { get; set; }
        public virtual string FirstName  { get; set; }
        public virtual string LastName { get; set; }
        public virtual string MiddleInt { get; set; }
        public virtual string StreetAddress { get; set; }
        public virtual string City { get; set; }
        public virtual string State { get; set; }
        public virtual string PostalCode { get; set; }
        public virtual string EmailAddress { get; set; }
        public virtual string HomePhone { get; set; }
        public virtual string CellPhone { get; set; }
        public virtual double Height { get; set; }
        public virtual double Weight { get; set; }
        public virtual int Age { get; set; }
        public virtual int Event_CompId { get; set; }



    }

    public class InEventClass
    {
        public virtual int EventClassID { get; set; }
        public virtual string ClassName { get; set; }
        public virtual bool IsSelected { get; set; }
    }
   //duplicate to simplify how the second list is pulled and then combined with first      list
    public class AllEventClasses
    {
        public virtual int EventClassID { get; set; }
        public virtual string ClassName { get; set; }
        public virtual bool IsSelected { get; set; }
    }

}

控制器：

public ActionResult CompeditorDetail(int CompeditorId)
        {
            //Pull the Competitor detail for the ID passed in
            var comp = _db.Compeditors.Single(c => c.CompeditorId == CompeditorId);

            //Pull a list of Event-Classes the competitor is already signed up for on current event
            var nlist = (from o in _db.Compeditors
                         join o2 in _db.Event_Class_Compeditors_s on o.CompeditorId equals CompeditorId
                         where o.CompeditorId.Equals(CompeditorId)
                         join o3 in _db.Event_Classes on o2.EventClassID equals o3.EventClassID
                         where o2.EventClassID.Equals(o3.EventClassID)
                         join o4 in _db.Class_Definitions on o3.ClassID equals o4.Class_Definition_ID
                         where o3.ClassID.Equals(o4.Class_Definition_ID)
                         select new InEventClass()
                         {
                             ClassName = o4.Class_Name,
                             EventClassID = o2.EventClassID,
                             IsSelected = true
                         }).ToList();

            //pull a complete list of Event Classes that are avaiaible
            var totallist = (from o in _db.Event_Classes
                             join o2 in _db.Event_Classes on o.ClassID equals o2.ClassID
                             where o.ClassID.Equals(o2.ClassID)
                             join o3 in _db.Class_Definitions on o2.ClassID equals o3.Class_Definition_ID
                             where o2.ClassID.Equals(o3.Class_Definition_ID)
                             join o4 in _db.Events on o.EventID equals o4.EventID
                             where o.EventID.Equals(o4.EventID)
                             where o4.CurrentEvent.Equals(true)
                             select new AllEventClasses()
                             {
                                 ClassName = o3.Class_Name,
                                 EventClassID = o2.EventClassID,
                                 IsSelected = false

                             }).ToList();

            var whatsleft = totallist.Where(eachtotalclass => !(nlist.Any(eachClassIHave => eachClassIHave.EventClassID == eachtotalclass.EventClassID))).ToList();

            var model = new CompDetailPlus { AllEventClasses = whatsleft, Compeditor = comp, InEventClass = nlist };

            return View(model);
        }

查看：
（必须显示竞争对手的详细信息以及他们所在的Event_Classes的复合列表）在视图中，我看不到任何数据的值..运行中的所有错误，没有显示的好处。

@model IEnumerable<eManager.Web2.Models.CompDetailPlus>

@{
    ViewBag.Title = "Competitor's Detail";
}

<h2>@ViewBag.Title</h2>

<fieldset>
    <legend>Compeditor</legend>
            <table border="1" >
                    <tr>
                        <td>
                            <div class="display-field">
                                @Html.HiddenFor(model => model.Compeditor.CompeditorId)

                            </div>

                            <b>First Name</b>
                            <div class="display-field">
                                @Html.DisplayFor(model => model.Compeditor.FirstName)


                            </div>
                        </td>
                        <td>
                            <b>Last Name</b>
                            <div class="display-field">
                                @Html.DisplayFor(model => model.Compeditor.LastName)

                            </div>
                        </td>


                    @using (Html.BeginForm("CompeditorDetail", "Compeditor", FormMethod.Post))


                    {
                        foreach (var item in Model)
                         {
                           <input type="checkbox" name="MyID" value="@item.AllEventClasses.IsSelected"/> @item.InEventClass.ClassName <br />
                           <input type="hidden" name="CompeditorID" value="@item.InEventClass.CompeditorId" />
                           }
                        }

                    </td>

Answer 1

您的View接受IEnumerable eManager.Web2.Models.CompDetailPlus的模型，这样会很好，但您的控制器正在发送一个eManager.Web2.Models.CompDetailPlus对象。

尝试在视图中更改此内容

    @model IEnumerable<eManager.Web2.Models.CompDetailPlus>

到此：

    @model eManager.Web2.Models.CompDetailPlus

并更改视图的底部，以便它遍历模型中的Enumerable compaosite项目。

复杂的ViewModel - View无法通过模型Advice Needed自动化值。

1 个答案: