ef 多个模块，通过程序集映射entity，指定对应的repository

在Entity Framework repository下加两个方法：

        public virtual T GetByEntityName(object id, string EntityTypeName)
        {
            dynamic repository = GetEFRepository(EntityTypeName);
            if (repository != null)
                return repository.Entities.Find(id);
            else
                return null;
        }

        public virtual dynamic GetRecordRepository(string EntityTypeName)
        {
            dynamic repository = GetEFRepository(EntityTypeName);
            if (repository != null)
            {
                var type = repository.GetType().GetGenericArguments()[0];
                dynamic part = Activator.CreateInstance(type);
                return part;
            }
            else
            {
                return null;
            }
        }
        private object GetEFRepository(string EntityTypeName)
        {

          

            if (_repositoryDictionary == null)
            {
                var typesToRegister = TypeUtil.GetEntityTypes();
                _repositoryDictionary = new Dictionary<string, object>();
                foreach (var type in typesToRegister)
                {
                    object repository = Activator.CreateInstance(typeof(EfRepository<>).MakeGenericType(type), _context);

                    _repositoryDictionary[type.Name] = repository;
                }
            }

            if (_repositoryDictionary.ContainsKey(EntityTypeName))
                return _repositoryDictionary[EntityTypeName];
            else
                return null;
        }

TypeUtil.cs

 public class TypeUtil
    {
        public static IList<Type> GetEntityTypes()
        {
            var cacheManager = new MemoryCacheManager();
            return cacheManager.Get("ENTITY-TYPE-ASSEMBLY", () =>
            {
                var typesToRegister = Assembly.GetExecutingAssembly().GetTypes()
                 .Where(type => (typeof(BaseEntity).IsAssignableFrom(type) && (type.GetConstructor(Type.EmptyTypes) != null)));
                return typesToRegister.ToList();
            });

        }
    }

test:

 [Test]
        public void TypeUtilTest()
        {

            var n = _repository.GetRecordRepository("NewsEntity");
            dynamic nm = _repository.GetByEntityName(, "NewsEntity");
            var title = nm.Title;

            var c = _repository.GetRecordRepository("NewsCommentEntity");
            dynamic cm = _repository.GetByEntityName(, "NewsCommentEntity");
            var comment = cm.Comment;
            string pass = title + "\n" + comment;
            Assert.Pass(pass);

        }