使用单个dbcontext和存储库.net多个数据库

public interface IRepository<T>
{
    IEnumerable<T> GetAll();
    T GetById(int id);
    void Add(T entity);
    void Update(T entity);
    void Delete(T entity);
}

public class Repository<T> : IRepository<T> where T : class
{
    private readonly DbContext _dbContext;
    private readonly DbSet<T> _dbSet;

    public Repository(DbContext dbContext)
    {
        _dbContext = dbContext;
        _dbSet = _dbContext.Set<T>();
    }

    public IEnumerable<T> GetAll()
    {
        return _dbSet.ToList();
    }

    public T GetById(int id)
    {
        return _dbSet.Find(id);
    }

    public void Add(T entity)
    {
        _dbSet.Add(entity);
    }

    public void Update(T entity)
    {
        _dbContext.Entry(entity).State = EntityState.Modified;
    }

    public void Delete(T entity)
    {
        _dbSet.Remove(entity);
    }
}

public class UserService
{
    private readonly IRepository<User> _userRepository;

    public UserService(DbContext dbContext)
    {
        _userRepository = new Repository<User>(dbContext);
    }

    public IEnumerable<User> GetAllUsers()
    {
        return _userRepository.GetAll();
    }

    // 其他业务方法...
}