得到错误'无法隐式转换类型' [英] getting an error 'can not implicitly convert type'

问题描述

我的资源代码：

My repositoty code:

public MedicalGroupModel Add(MedicalGroupModel model)
       {
           Data.MedicalGroup MedicalgroupEF = new Data.MedicalGroup();

           MedicalgroupEF.MedicalGroupName = model.MedicalGroupName;
           MedicalgroupEF.AddressId = model.AddressId;
           MedicalgroupEF.ContactId = model.ContactId;

           int id = 0;
           using (Data.RxMedicaDBEntities content = new Data.RxMedicaDBEntities())
           {
               content.AddToMedicalGroups(MedicalgroupEF);
               content.SaveChanges();

               id = MedicalgroupEF.MedicalGroupId;
           }
           model = Get(id);
           return model;
       }

控制器：

controller:

public ActionResult Add([DataSourceRequest] DataSourceRequest request, MedicalGroupModel model)
       {
           List<RxMedica.Model.MedicalGroupModel> medicalgroupList = new List<MedicalGroupModel>();
           medicalgroupList = RxMedica.Configuration.ServiceLocator.MedicalgroupHandler.Add(model);

           return Json(medicalgroupList.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
       }

推荐答案

您的模型是MedicalGroupModel对象列表

Your model is a list of MedicalGroupModel objects

List<MedicalGroupModel> medicalgroupmodel = new List<MedicalGroupModel>();

但是当你添加它时你正在添加一个类型为MedicalGroup的类

but when you add to it you are adding a class of type MedicalGroup

var newgroup = new MedicalGroup();
{
    Medicalgroupname = newgroup.MedicalGroupName;
    AddressId = newgroup.AddressId;
    ContactId = newgroup.ContactId;
}

也许AddressId和ContactId等属性在MedicalGroupModel类上？即你的意思是这个

Maybe the AddressId and ContactId etc properties are on the MedicalGroupModel class instead? ie did you mean this

var newgroup = new MedicalGroupModel();
{
    Medicalgroupname = newgroup.MedicalGroupName;
    AddressId = newgroup.AddressId;
    ContactId = newgroup.ContactId;
}

至于IDisposable错误，如果你想在使用块中使用某些东西，它必须实现IDisposible ，所以如果你的RxMedicaDBEntities没有那么修改就行了。

As for the IDisposable error, if you want to use something in a "using" block it must implement IDisposible, so if your RxMedicaDBEntities doesn't then amend it so it does.

public class RxMedicaDBEntities : IDisposable

如果您获得在EF DbContext中使用错误，通常是因为你没有将EntityFramework添加到使用上下文的项目中。

If you're getting the using error with a EF DbContext, its usually because you didn't add the EntityFramework to the project that's using the context.

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