在ASP.NET MVC 3中的许多服务之间共享工作单元

// 数据库上下文类
public class MyDbContext : DbContext
{
    public MyDbContext() : base("name=MyConnectionString")
    {
    }

    public DbSet<User> Users { get; set; }
    public DbSet<Order> Orders { get; set; }
}

// IUnitOfWork接口
public interface IUnitOfWork
{
    void SaveChanges();
}

// UnitOfWork类
public class UnitOfWork : IUnitOfWork
{
    private readonly MyDbContext _context;

    public UnitOfWork(MyDbContext context)
    {
        _context = context;
    }

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

// 服务类
public class UserService
{
    private readonly IUnitOfWork _unitOfWork;

    public UserService(IUnitOfWork unitOfWork)
    {
        _unitOfWork = unitOfWork;
    }

    public void CreateUser(User user)
    {
        // 创建用户
        _unitOfWork.SaveChanges();
    }
}

// 控制器类
public class UserController : Controller
{
    private readonly UserService _userService;

    public UserController(UserService userService)
    {
        _userService = userService;
    }

    public ActionResult CreateUser()
    {
        // 创建用户
        _userService.CreateUser(new User());
        return View();
    }
}