可以参考我的 DBcontext 在存储库中设置（）方法

Question

我有一个简单的通用存储库。

在这个存储库中，我有一个通用 DBContext，这意味着它不特定于我的应用程序。

通用 DbContext 仍然能够访问我的 DBcontexts 实体，例如

Context.Set<TEntity>().Add(entity)

这里的方法 Set() 是否引用了我的 webapplikationens DBContext，或者发生了什么？

完整代码：

    public interface IRepository<TEntity> where TEntity : class
    {
        TEntity Get(int id);
        void Add(TEntity entity);
    }

...

    public class Repository<TEntity> : IRepository<TEntity> where TEntity : class
    {
        protected readonly DbContext Context;

        public Repository(DbContext context)
        {
            Context = context;
        }

        public TEntity Get(int id)
        {
            // Here we are working with a DbContext, not PlutoContext. So we don't have DbSets 
            // such as Courses or Authors, and we need to use the generic Set() method to access them.
            //Returns a non-generic DbSet instance for access to entities of the given type in the context and the underlying store .
            return Context.Set<TEntity>().Find(id);
        }

        public void Add(TEntity entity)
        {
            Context.Set<TEntity>().Add(entity);
        }
    }
.................................

    public interface IAuthorRepository : IRepository<Author>
    {
        Author GetAuthorWithCourses(int id);
    }
..

    public class AuthorRepository : Repository<Author>, IAuthorRepository
    {
        public AuthorRepository(PlutoContext context) : base(context)
        {
        }

        public Author GetAuthorWithCourses(int id)
        {
            return PlutoContext.Authors.Include(a => a.Courses).SingleOrDefault(a => a.Id == id);
        }

        public PlutoContext PlutoContext
        {
            get { return Context as PlutoContext; }
        }
    }
..


    public interface IUnitOfWork : IDisposable
    {
        IAuthorRepository Authors { get; }
        int Complete();
    }
...

  public class UnitOfWork : IUnitOfWork
    {
        private readonly PlutoContext _context;

        public UnitOfWork(PlutoContext context)
        {
            _context = context;
           Authors = new AuthorRepository(_context);
        }

        public IAuthorRepository Authors { get; private set; }

        public int Complete()
        {
            return _context.SaveChanges();
        }

        public void Dispose()
        {
            _context.Dispose();
        }
    }


...

        public class Repository<Entity> : IRepository<Entity> where Entity : class
        {
        protected readonly DbContext Context;

        public Repository(DbContext context)
        {
            Context = context;
        }


        public void Add(Entity entity)
        {
            Context.Set<TEntity>().Add(entity);
        }
    }

Answer 1

参数 DbContext context 只是一个编译时类型，参数的实际类型没有改变。