c# - 有没有办法按顺序执行一个实现类

Question

public interface IInterface<T>
{
 void Handle(T message);
}

public class A: IInterface<T>
{
  void Handle(T Message) {}
}

public class B: IInterface<T>
{
  void Handle(T Message) {}
}

客户:

        public void Execute<T>(T message)
        {  
            var commandHandlers = DependencyResolver.Current.GetServices(typeof(IInterface<T>)).Cast<IInterface<T>>();

// The above line will give a list of implementation class of IInterface.

            foreach (var commandHandler in commandHandlers)
            {
                commandHandler.Handle(message);
            }
        }

有没有办法先执行 B 类实现，然后再执行 A 类实现？

Answer 1

您可以添加订单属性来控制它:

public interface IInterface<T>
{
 void Handle(T message);
 int Order {get;}
}

public class A: IInterface<T>
{
  void Handle(T Message) {}
  public int Order => 1;
}

public class B: IInterface<T>
{
  void Handle(T Message) {}
  public int Order => 0;
}

foreach (var commandHandler in commandHandlers.OrderBy(o=>o.Order))
{
    commandHandler.Handle(message);
}