如何在ASP.NET MVC中创建包含外键在我们类中的类的所有对象的下拉列表

我想为

Person

模型的

Edit

视图中的字段

Status-Status

创建一个下拉列表。我在这里看到了使用ViewBag的解决方案：但我不知道如何使它们适应我的情况

我有一个班上的人：

namespace WebApplication2.Models {
    public class Person {
        public int Id { get; set; }
        [DisplayName("First Name")]
        public string FirstName { get; set; }
        [DisplayName("Last Name")]
        public string LastName { get; set; }
        [DisplayName("Cell Number")]
        public string CellNumber { get; set; }
        [DisplayName("Secondary Number")]
        public string SecondaryPhoneNumber { get; set; }
        [DisplayName("Address")]
        public string Address { get; set; }

        [DisplayName("Date of Birth")]
        [DisplayFormat(DataFormatString = "{0:d}", ApplyFormatInEditMode = true)]
        public DateTime BirthDate { get; set; }

        [DisplayName("Pesel")]
        public string Pesel { get; set; }

        [DisplayName("Notes")]
        public string Notes { get; set; }
        public virtual ICollection<Meeting> Meetings { get; set; }

        public  Status Status { get; set; }

    }
}

namespace WebApplication2.Models{
公共阶层人士{
公共int Id{get；set；}
[显示名称（“名字”）]
公共字符串名{get；set；}
[显示名称（“姓氏”）]
公共字符串LastName{get；set；}
[显示名称（“单元号”）]
公共字符串CellNumber{get；set；}
[显示名称（“辅助编号”）]
公共字符串SecondaryPhoneNumber{get；set；}
[显示名称（“地址”）]
公共字符串地址{get；set；}
[显示姓名（“出生日期”）]
[DisplayFormat（DataFormatString=“{0:d}”，ApplyFormatInEditMode=true）]
公共日期时间出生日期{get；set；}
[显示名称（“Pesel”）]
公共字符串Pesel{get；set；}
[显示名称（“注释”）]
公共字符串注释{get；set；}
公共虚拟ICollection会议{get；set；}
公共状态状态{get；set；}
}
}

我有阶级地位：

namespace WebApplication2.Models {
    public partial class Status {
        public int Id { get; set; }
        public string Name { get; set; }
        public virtual ICollection<Person> M { get; set; }
    }
}

namespace WebApplication2.Models{
公共部分类状态{
公共int Id{get；set；}
公共字符串名称{get；set；}
公共虚拟ICollection M{get；set；}
}
}

我已经通过实体框架创建了具有读写操作的控制器。此控件具有视图编辑功能：

@model WebApplication2.Models.Person

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>


@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Person</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.Id)

        <div class="form-group">
            @Html.LabelFor(model => model.FirstName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.FirstName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.FirstName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.LastName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.LastName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.LastName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CellNumber, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CellNumber, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CellNumber, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.SecondaryPhoneNumber, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.SecondaryPhoneNumber, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.SecondaryPhoneNumber, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Address, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Address, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Address, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.BirthDate, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.BirthDate, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.BirthDate, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Pesel, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Pesel, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Pesel, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Notes, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Notes, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Notes, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Status, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @*@Html.EditorFor(model => model.Status, new { htmlAttributes = new { @class = "form-control" } })*@
                @Html.EditorFor(mode => Model.Status);
                @Html.ValidationMessageFor(model => model.Status, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Save" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

@model WebApplication2.Models.Person
@{
ViewBag.Title=“编辑”；
}
编辑
@使用（Html.BeginForm（））
{
@Html.AntiForgeryToken（）
人

@Html.ValidationSummary（true，“，new{@class=“text danger”}）
@Html.HiddenFor（model=>model.Id）
@LabelFor（model=>model.FirstName，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.FirstName，new{htmlAttributes=new{@class=“form control”}}）
@Html.ValidationMessageFor（model=>model.FirstName，“，new{@class=“text danger”}）
@LabelFor（model=>model.LastName，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.LastName，new{htmlAttributes=new{@class=“form control”}}）
@Html.ValidationMessageFor（model=>model.LastName，“，new{@class=“text danger”}）
@LabelFor（model=>model.CellNumber，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.CellNumber，new{htmlAttributes=new{@class=“form control”}}）
@Html.ValidationMessageFor（model=>model.CellNumber，“，new{@class=“text danger”}）
@LabelFor（model=>model.SecondaryPhoneNumber，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.SecondaryPhoneNumber，new{htmlAttributes=new{@class=“form control”}）
@Html.ValidationMessageFor（model=>model.SecondaryPhoneNumber，“，new{@class=“text danger”}）
@LabelFor（model=>model.Address，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.Address，new{htmlAttributes=new{@class=“form control”}）
@Html.ValidationMessageFor（model=>model.Address，“，new{@class=“text danger”}）
@LabelFor（model=>model.BirthDate，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.BirthDate，new{htmlAttributes=new{@class=“form control”}）
@Html.ValidationMessageFor（model=>model.BirthDate，“，new{@class=“text danger”}）
@LabelFor（model=>model.Pesel，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.Pesel，new{htmlAttributes=new{@class=“form control”}}）
@Html.ValidationMessageFor（model=>model.Pesel，“，new{@class=“text danger”}）
@LabelFor（model=>model.Notes，htmlAttributes:new{@class=“controllabel col-md-2”}）
@EditorFor（model=>model.Notes，new{htmlAttributes=new{@class=“form control”}）
@Html.ValidationMessageFor（model=>model.Notes，“，new{@class=“text danger”}）
@LabelFor（model=>model.Status，htmlAttributes:new{@class=“controllabel col-md-2”}）
@*@EditorFor（model=>model.Status，new{htmlAttributes=new{@class=“form control”}）*@
@EditorFor（mode=>Model.Status）；
@Html.ValidationMessageFor（model=>model.Status，“，new{@class=“text danger”}）
}
@ActionLink（“返回列表”、“索引”）
@节脚本{
@Scripts.Render（“~/bundles/jqueryval”）
}

我为数据库提供了状态实例：

 public class PersonInitializer : System.Data.Entity.DropCreateDatabaseIfModelChanges<PersonContext> {
        protected override void Seed(PersonContext context) {
            var persons = new List<Person> { 
             new Person{FirstName = "John", LastName = "Doe", CellNumber = "123-456-789", SecondaryPhoneNumber = "98873213", Address = "1street 2",BirthDate = DateTime.Now.Date, Pesel = "312312312", Notes = "Annoying"},
             new Person{FirstName = "Anna", LastName = "Doe", CellNumber = "113-456-789", SecondaryPhoneNumber = "98873213", Address = "1street 2",BirthDate = DateTime.Now.Date, Pesel = "548555672", Notes = "Less Annoying"}
            };

            persons.ForEach(person => context.Persons.Add(person));
            context.SaveChanges();

            var meetings = new List<Meeting>{
                new Meeting{PersonId = 1, Body = "Body of meeting", Date = DateTime.Now}
            };

            meetings.ForEach(meeting => context.Meetings.Add(meeting));
            context.SaveChanges();

            var statuses = new List<Status> {
                new Status{Name = "OK"},
                new Status {Name = "NOT_OK"}
            };

            statuses.ForEach(status => context.Statuses.Add(status));
            context.SaveChanges();
        }
    }

公共类PersonInitializer:System.Data.Entity.DropCreateDatabaseIfModelChanges{
受保护的覆盖无效种子（PersonContext上下文）{
var persons=新列表{
新人{FirstName=“John”，LastName=“Doe”，CellNumber=“123-456-789”，SecondaryPhoneNumber=“98873213”，Address=“1stre”
var statusChoices = db.Statuses.Select(m => new SelectListItem
    {
        Text = m.FooProperty,
        Value = m.BarProperty
    });

@Html.DropDownListFor(m => m.Status, Model.StatusChoices)

namespace WebApplication2.Models {
    public class Person {
        public int Id { get; set; }
        ...

        /*public  Status Status { get; set; }*/

        public int StatusId { get; set; }
        public IList<SelectListItem> AllStatuses { get; set; }

        public Person ()
        {
            AllStatuses = new List<SelectListItem>();
        }
    }
}

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var model = new Person();
        model.AllStatuses = new List<SelectListItem>
        {
            new SelectListItem { Text = "One",  Value = "1"},
            new SelectListItem { Text = "Two",  Value = "2"},
            new SelectListItem { Text = "Three",  Value = "3"}
        };
        return View(model);
    }

    [HttpPost]
    public ActionResult Index(Person model)
    {
        // Get the selected value
        int id = model.StatusId;
        return View();
    }
}

@Html.DropDownListFor(x => x.StatusId, Model.AllStatuses)

 public  int? StatusId { get; set; }
 public virtual Status Status { get; set; }

  ViewBag.StatusId = new SelectList(db.Statuses, "Id", "Name", person.StatusId);

 public ActionResult Edit([Bind(Include = "Id,FirstName,LastName,CellNumber,SecondaryPhoneNumber,Address,BirthDate,Pesel,Notes,StatusId")] Person person) {

  <div class="form-group">
        @Html.LabelFor(model => model.StatusId, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownList("StatusId", String.Empty)
            @Html.ValidationMessageFor(model => model.StatusId)
        </div>
    </div>