c# – 如何将场景中的事件附加到另一个类

FacadeClass是

public class FacadeClass
{
    private SubsystemClass1 _s1;
    private SubsystemClass2 _s2;

    public FacadeClass() 
    {
        _s1 = new SubsystemClass1();
        _s2 = new SubsystemClass2();
    }
}

和SubsystemClass1

public class SubsystemClass1
{
    public event EventHandler FetchComplete;

    public void OnFetchComplete(EventArgs e)
    {
        if (FetchComplete != null)
        {
            FetchComplete(this,e);
        }
    }
}

然后是SubsystemClass2

public class SubsystemClass2
{
    public event EventHandler SendComplete;

    public void OnSendComplete(EventArgs e)
    {
        if (SendComplete != null)
        {
            SendComplete(this,e);
        }
    }
}

假设我有另一个使用facade类的类,我想从SubsystemClass1和SubsystemClass2附加事件.问题是如何在没有使用子系统类(如果有的话)的情况下在没有redifine的情况下附加事件？

在外观类中重新设置它的示例

public class FacadeClass
{
    private SubsystemClass1 _s1;
    private SubsystemClass2 _s2;

    public FacadeClass() 
    {
        _s1 = new SubsystemClass1();
        _s2 = new SubsystemClass2();
    }

    // Redifine the event
    public event EventHandler FetchComplete
    {
        add { _s1.FetchComplete += value; }
        remove { _s1.FetchComplete -= value; }
    }

    public event EventHandler SendComplete
    {
        add { _s2.SendComplete += value; }
        remove { _s2.SendComplete -= value; }
    }
}

使用子系统类的示例,使它们都是公共的

public class FacadeClass
{
    // Make both class to public
    public SubsystemClass1 _s1;
    public SubsystemClass2 _s2;

    public FacadeClass() 
    {
        _s1 = new SubsystemClass1();
        _s2 = new SubsystemClass2();
    }
}

public class AnotherClass
{
    FacadeClass _fd;

    public AnotherClass() 
    {
        _fd = new FacadeClass();
        // Little bit ugly
        _fd._s1.FetchComplete += new EventHandler(_s1_FetchComplete);
    }

    void _s1_FetchComplete(object sender,EventArgs e)
    {
        // Do Something Here
    }
}

提前致谢,

对Brian说…