如何使用匿名方法動態訂閱事件？

Question

我使用LoadControl(String)動態地創建了UserControl個數，並且想要訂閱它們每個的事件。

我所有的控件繼承了需要的共同Event實現共同Interface：

public interface IObjectProcessor 
{ 
    event EventHandler<ObjectProcessedEventArgs> ObjectProcessed; 
} 

所以我接下來做我的頁面加載事件：

protected void Page_Load() 
{ 
    switch(Request["type"]) 
    { 
    case "user": 
    { 
     LoadControl("AddUser.ascx", delegate(object sender, ObjectProcessedEventArgs e) 
     { 
      // do something 
     }); 
     break; 
    } 
    } 
} 

private void LoadControl(string path, Action<object, ObjectProcessedEventArgs> action) 
{ 
    var control = (IObjectProcessor)LoadControl(path) 
    control.ObjectProcessed // here! 
} 

如何訂閱一個deleagte到這個事件？

Answer 1

變化Action<object, ObjectProcessedEventArgs>到EventHandler<ObjectProcessedEventArgs>：

private void LoadControl(string path, EventHandler<ObjectProcessedEventArgs> handler) 
{ 
     var control = (IObjectProcessor)LoadControl(path) 
     control.ObjectProcessed += handler; 
} 

Answer 2

control.ObjectProcessed += action