我正在使用.Net 4.0 EF 4.0。
我在数据库 myentity、mygroup 和 myapplication 中有三个表。myentity 可能属于 1 到更多 mygroups，并且有 1 到更多 myapplications 并映射到 EF。然后我有一个 myentityrepository 类公开一个方法，如下所示：
public MyEntity GetByName(string name)
{
var v = Set().Where(x => x.Name == name)
.Include(x => x.MyEntityMyApplications)
.Include(x => x.MyEntityMyGroups);
v.Load();
//v.ToList();
return v.FirstOrDefault();
}
在我的 MVC controller.cs 中，我得到了名称并用 myentity 对象填充了我的视图模型。返回查看页面后，我得到了上面的错误。
[HttpGet]
public ActionResult GetMyentityAjax(string name)
{
MyViewModel uvm = new MyViewModel();
using (IUnitOfWork unitOfWork = new UnitOfWork(new MyentityEntityContextFactory()))
{
Myentity me = _myentityRepository.GetByName(name);
if (me != null)
{
uvm.Name = me.Nme;
...
uvm.MyentityMyApplication = me.MyentityMyApplication.ToList();
uvm.MyentityMygroups = me.MyentityMygroups .ToList();
}
}
return Json(uvm, JsonRequestBehavior.AllowGet); }
//Even turned the lazyloding to false in //MydataModel.designer.cs as below
public MyappEntities() : base("name=MyappEntities", "MyappEntities")
{
//#### CHANGE ME ######
//this.ContextOptions.LazyLoadingEnabled = true;
this.ContextOptions.LazyLoadingEnabled = false;
//#### END #####
OnContextCreated();
}
请帮忙。TIA，
-t