从枚举创建下拉列表并将数据绑定到EF模型属性

我试图将dropdownlist选择的值绑定到模型属性，并在多次尝试后，我无法弄清楚这里可能有什么问题 .

我想了解如何在表单提交时，用户从下拉列表中选择的值将填写EF模型的属性 . 其中 model.tblPickup.LocationList 是ENUM， model.tblPickup.LocationType 是EF模型属性 .

MVC (razor) code

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

<div class="form-group">
                    @Html.LabelFor(model => model.tblPickup.LocationType, htmlAttributes: new { @class = "control-label col-md-2" })
                    <div class="col-md-10">
                        @Html.DropDownListFor(model => model.tblPickup.LocationType, new SelectList(Enum.GetValues(typeof(WBusiness.Models.LocationTypes))), "Select Address Type", new { htmlAttributes = new { @class = "form-control" } })
                        @Html.ValidationMessageFor(model => model.tblPickup.LocationType, "", new { @class = "text-danger" })
                    </div>
                </div>

Code Behind - It's a composite model with three classes:

//Actual class creatd by EF
    public partial class tblLocation
        {
            public int Id { get; set; }
            public string LocationName { get; set; }
            public string OtherDetails { get; set; }
            public Nullable<decimal> Latitude { get; set; }
            public Nullable<decimal> Longitude { get; set; }
            public string GoogleLink { get; set; }
            public string PhoneNumber { get; set; }
            public Nullable<int> LocationType { get; set; }
            public Nullable<System.DateTime> CreateDate { get; set; }
            public Nullable<System.DateTime> UpdateDate { get; set; }
            public Nullable<int> ProfileId { get; set; }
            public Nullable<bool> Deleted { get; set; }
            public Nullable<System.DateTime> DeleteDate { get; set; }

            public virtual tblProfile tblProfile { get; set; }
        }

//Partial class to add custom property
    public partial class tblLocation
        {
            public LocationTypes LocationList { get; set; }
        }

//ENUM class
    public enum LocationTypes
        {
            Pickup = 1,
            Delivery = 2
        }
//Composit class with order and location in it
        public class OrderDetailModel
            {
                public tblOrder tblOrder { get; set; }
                public tblLocation tblPickup { get; set; }
            }
//Controller code
[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create(OrderDetailModel model)
    {
        if (ModelState.IsValid)
        {
            db.tblOrders.Add(model.tblOrder);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(model);
    }

当我尝试提交表单时 . 我收到以下错误：
1.对于第一个下拉列表：虽然该字段是整数类型，但我到达后面的代码，但是 ModelState.IsValid 是 false .
2.对于第二个下拉代码：我得到"The field Location Type must be a number."这是有道理的，因为Location Type是一个整数字段 .