我收到的错误是没有为System.Data.Entity.Spatial.DbGeography找到一个无参数的构造函数：
[MissingMethodException：没有为此定义无参数构造函数 宾语。对象类型'System.Data.Entity.Spatial.DbGeography'。]
我首先从数据库中使用Code。我所有其他实体都很好，这是唯一一个有问题的实体
控制器是使用MVC5脚手架制作的
我错过了什么或做错了什么
namespace Delivery.Models.BaseModels
{
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Data.Entity.Spatial;
public partial class RestaurantProfile
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public RestaurantProfile()
{
AspNetUsers = new HashSet<AspNetUser>();
Orders = new HashSet<Order>();
}
[Key]
public Guid RestaurantPofileID { get; set; }
[StringLength(250)]
public string Name { get; set; }
public string LocationName { get; set; }
public DbGeography LocationGPS { get; set; }
public decimal? DeliveryFee1 { get; set; }
public decimal? DeliveryFee2 { get; set; }
public decimal? DeliveryFee3 { get; set; }
[Column(TypeName = "datetime2")]
public DateTime CreatedDate { get; set; }
[Column(TypeName = "datetime2")]
public DateTime ModifyDate { get; set; }
public string Notes { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<AspNetUser> AspNetUsers { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<Order> Orders { get; set; }
}
}
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using Delivery.Models.BaseModels;
namespace Delivery.Controllers
{
public class RestaurantProfilesController : Controller
{
private DeliveryEntities db = new DeliveryEntities();
// GET: RestaurantProfiles
public ActionResult Index()
{
return View(db.RestaurantProfiles.ToList());
}
// GET: RestaurantProfiles/Details/5
public ActionResult Details(Guid? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
RestaurantProfile restaurantProfile = db.RestaurantProfiles.Find(id);
if (restaurantProfile == null)
{
return HttpNotFound();
}
return View(restaurantProfile);
}
// GET: RestaurantProfiles/Create
public ActionResult Create()
{
return View();
}
// POST: RestaurantProfiles/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see https://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "RestaurantPofileID,Name,LocationName,LocationGPS,DeliveryFee1,DeliveryFee2,DeliveryFee3,CreatedDate,ModifyDate,Notes")] RestaurantProfile restaurantProfile)
{
if (ModelState.IsValid)
{
restaurantProfile.RestaurantPofileID = Guid.NewGuid();
db.RestaurantProfiles.Add(restaurantProfile);
db.SaveChanges();
return RedirectToAction("Index");
}
return View(restaurantProfile);
}
// GET: RestaurantProfiles/Edit/5
public ActionResult Edit(Guid? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
RestaurantProfile restaurantProfile = db.RestaurantProfiles.Find(id);
if (restaurantProfile == null)
{
return HttpNotFound();
}
return View(restaurantProfile);
}
// POST: RestaurantProfiles/Edit/5
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see https://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit([Bind(Include = "RestaurantPofileID,Name,LocationName,LocationGPS,DeliveryFee1,DeliveryFee2,DeliveryFee3,CreatedDate,ModifyDate,Notes")] RestaurantProfile restaurantProfile)
{
if (ModelState.IsValid)
{
db.Entry(restaurantProfile).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
return View(restaurantProfile);
}
// GET: RestaurantProfiles/Delete/5
public ActionResult Delete(Guid? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
RestaurantProfile restaurantProfile = db.RestaurantProfiles.Find(id);
if (restaurantProfile == null)
{
return HttpNotFound();
}
return View(restaurantProfile);
}
// POST: RestaurantProfiles/Delete/5
[HttpPost, ActionName("Delete")]
[ValidateAntiForgeryToken]
public ActionResult DeleteConfirmed(Guid id)
{
RestaurantProfile restaurantProfile = db.RestaurantProfiles.Find(id);
db.RestaurantProfiles.Remove(restaurantProfile);
db.SaveChanges();
return RedirectToAction("Index");
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
}
}
堆栈追踪：
[MissingMethodException: No parameterless constructor defined for this object.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +119
System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +247
System.Activator.CreateInstance(Type type, Boolean nonPublic) +83
System.Activator.CreateInstance(Type type) +11
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +197
[MissingMethodException: No parameterless constructor defined for this object. Object type 'System.Data.Entity.Spatial.DbGeography'.]
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +233
System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +530
System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +330
System.Web.Mvc.DefaultModelBinder.GetPropertyValue(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor, IModelBinder propertyBinder) +17
System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +377
System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +101
System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +55
System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1197
System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +330
System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +338
System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +105
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) +743
System.Web.Mvc.Async.WrappedAsyncResult`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +14
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +128
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +343
System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) +25
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +30
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +128
System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +465
System.Web.Mvc.Controller.<BeginExecute>b__14(AsyncCallback asyncCallback, Object callbackState, Controller controller) +18
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +20
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +128
System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +374
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +16
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) +52
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +30
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +128
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +384
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +48
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +443
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +157
谢谢你的帮助！