方法无法转换为商店表达式

Question

方法无法转换为商店表达式我看到这个代码使用LINQ to SQL，但是当我使用Entity Framework时，它会抛出此错误：LINQ to Entities无法识别方法'System.Linq.IQueryable'1 [MyProject.Models.CommunityFeatures] GetCommunityFeatures（）'方法，并且此方法无法转换为商店表达式。存储库代码是这样的：public IQueryable<Models.Estate> GetEstates(){     return from e in entity.Estates            let AllCommFeat = GetCommunityFeatures()            let AllHomeFeat = GetHomeFeatures()            select new Models.Estate                       {                                 EstateId = e.EstateId,                                 AllHomeFeatures = new LazyList<HomeFeatures>(AllHomeFeat),                                 AllCommunityFeatures = new LazyList<CommunityFeatures>(AllCommFeat)                       };}public IQueryable<Models.CommunityFeatures> GetCommunityFeatures(){     return from f in entity.CommunityFeatures            select new CommunityFeatures                       {                           Name = f.CommunityFeature1,                           CommunityFeatureId = f.CommunityFeatureId                       };}public IQueryable<Models.HomeFeatures> GetHomeFeatures(){     return from f in entity.HomeFeatures            select new HomeFeatures()            {                Name = f.HomeFeature1,                HomeFeatureId = f.HomeFeatureId            };}LazyList是一个扩展IQueryable功能的List。有人能解释为什么会出现这种错误吗