c# - 使 Entity Framework 实现一个接口(interface)

Question

我想将 IoC 与 Entity Framework 和 Ninject 结合使用。我认为我需要生成的实体类来实现接口(interface) ICRUD。有一个 walkthrough这显示了如何强制 Entity Framework 实现接口(interface)。我按照说明进行操作，我的 EntityObjectCodeGenerator.cs 文件确实显示了“ICrud”，但没有实现接口(interface)。正如文章所说，我没有在 EntityObjectCodeGenerator.tt 下看到任何子类。我收到错误

'BugnetMvc.Models.BugNetEntities' does not implement interface member 'BugnetMvc.Services.ICrud.Update()'

更新
目标是创建一个可测试、可扩展的 MVC-3 Intranet，利用 Entity Framework ，该框架还支持强类型 View 和部分 View 。到目前为止，从我对 Ninject 的少量经验来看，我相信我需要使用 View 本身的服务重载我的 Controller 的构造函数(假设 CRUD 方法可用于每个接口(interface))并且每个局部 View 都有一个服务:

例如

public HomeController(HomeService homeCrudService, PartialViewService1 partialviewService)

更新2
为了清楚并希望对其他人有所帮助，代码可以实现如下:

这是扩展实体的方式

namespace BugnetMvc.Models//ensure namespace matches entity
{
    public partial class Milestone : ICrud<Milestone>//Entity, note the CRUD generic.  This gives us a lot of flexibility working with Ninject
    {
        public bool Create()
        {
            throw new System.NotImplementedException();
        }

        public List<Milestone> Read()
        {
            var milestones = new List<Milestone>();

            var result = from a in new BugNetEntities1().Milestones
                            where a.MilestoneID >= 0
                            select new { a.Milestone1 };

            milestones = result.AsEnumerable()
                                        .Select(o => new Models.Milestone
                                        {
                                            Milestone1 = o.Milestone1
                                        }).ToList();
            return milestones;
        }

        public bool Update()
        {
            throw new System.NotImplementedException();
        }

        public bool Delete()
        {
            throw new System.NotImplementedException();
        }
    }

示例 Mock 实体:

namespace BugnetMvc.Services
{
    public class MilestoneServiceMock : ICrud<MilestoneMock>
    {
        public MilestoneServiceMock()
        {

        }

        public bool Create()
        {
            throw new System.NotImplementedException();
        }

        public bool Update()
        {
            throw new System.NotImplementedException();
        }

        public bool Delete()
        {
            throw new System.NotImplementedException();
        }


        List<MilestoneMock> ICrud<MilestoneMock>.Read()
        {
            //string[] mileStones = new string[14];
            List<MilestoneMock> milestoneMocks = new List<MilestoneMock>();
            milestoneMocks.Add(new MilestoneMock("New"));
            milestoneMocks.Add(new MilestoneMock("Assessment"));
            milestoneMocks.Add(new MilestoneMock("Pending Approval"));
            milestoneMocks.Add(new MilestoneMock("Pending Start"));
            milestoneMocks.Add(new MilestoneMock("Planning"));
            milestoneMocks.Add(new MilestoneMock("Dev-In Process"));
            milestoneMocks.Add(new MilestoneMock("Dev-Pending Approval to QA"));
            milestoneMocks.Add(new MilestoneMock("Dev-Pending Move to QA"));
            milestoneMocks.Add(new MilestoneMock("QA-In Process"));
            milestoneMocks.Add(new MilestoneMock("QA-UAT"));
            milestoneMocks.Add(new MilestoneMock("QA-Pending Approval to Prod"));
            milestoneMocks.Add(new MilestoneMock("QA-Pending Move to Prod"));
            milestoneMocks.Add(new MilestoneMock("On-Going"));
            return milestoneMocks;
        }
    }
}
//Global.asax
        internal class SiteModule : NinjectModule
        {
            public override void Load()
            {
                bool MOCKDB = true;
                MOCKDB = false;
                if (MOCKDB)
                {
                    //Set up ninject bindings here.
                    Bind<ICrud<MilestoneMock>>().To<MilestoneServiceMock>();
                    Bind<ICrud<Application>>().To<ApplicationService>();
                }
                else
                {
                    //Set up ninject bindings here.
                    Bind<ICrud<Milestone>>().To<Milestone>();
                    Bind<ICrud<Application>>().To<ApplicationService>();
                }
            }
        }

可能会出现对 Read(int Id) 的需求，在这种情况下，使用与上述相同的基本思想的新接口(interface)应该可以解决问题。甚至可以更新 ICrud 以将模型类型也传递到方法中。有很多选择。这对我有用，感谢 Jon Skeet 的专家指导。

Answer 1

大概生成的实体类是部分类，对吗？

如果是这样，您可以只添加自己的部分类文件来指定要实现的接口(interface) - 并提供您需要的任何实际实现方法。我怀疑这比更改生成的内容要简单得多。