파생 클래스의 기본 클래스 이벤트 구독

Question

파생 클래스에서 기본 클래스 이벤트를 구독하는 데 어려움을 겪고 있습니다. 그 목적은 propertyChild를 얻을 때마다 내 기본 클래스에서 이벤트를 발생시켜 결과적으로 파생 클래스에서 메서드를 실행하는 것입니다.

namespace MyNamespace 
{ 
public delegate void EventHandler(); 
[Serializable] 
public class ChartGroupCollection : ObservableCollection<ChartGroup>, INotifyCollectionChanged 
{ 

    public ChartGroupCollection() 
    { 
     base.DirtyFlagging += new EventHandler(MethodIWantToRun); //subscription to event 
    } 

    void MethodIWantToRun() 
    { 
     SomeVariable++; 
    } 


    #region NotifyPropertyChanged 
    public event PropertyChangedEventHandler PropertyChanged; 
    private void NotifyPropertyChanged([CallerMemberName] String propertyName = "") 
    { 
     PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 
    } 
    #endregion 
} 


[Serializable] 
public class ChartGroup : INotifyPropertyChanged 
{ 
    public event EventHandler<EventArgs> DirtyFlagging; 
    protected virtual void OnDirtyFlagging(EventArgs e) 
    { 
     EventHandler<EventArgs> handler = DirtyFlagging; 
     if (handler != null) 
     { 
      handler(this, e); 
     } 
    } 


    public ChartGroup() 
    { 

    } 

    public event PropertyChangedEventHandler PropertyChanged; 
    private void NotifyPropertyChanged([CallerMemberName] String propertyName = "") 
    { 
     if (PropertyChanged != null) 
     { 
      DirtyFlagging.Invoke(this, someeventargs); //Where i want to invoke the event 
      PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 
     } 
    } 


} 

Answer 1

난 당신이 이벤트 트리거이

public class ChartGroupCollection : ObservableCollection<ChartGroup> 
{ 
    public int SomeVariable { get; set; } 

    public ChartGroupCollection() 
    { 
     CollectionChanged += ChartGroupCollection_CollectionChanged; 
    } 

    void ChartGroupCollection_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) 
    { 
     if (e.OldItems != null) 
     { 
      foreach (ChartGroup item in e.OldItems) 
      { 
       item.PropertyChanged -= item_PropertyChanged; 
      } 
     } 

     if (e.NewItems != null) 
     { 
      foreach (ChartGroup item in e.NewItems) 
      { 
       item.PropertyChanged += item_PropertyChanged; 
      } 
     } 
    } 

    void item_PropertyChanged(object sender, PropertyChangedEventArgs e) 
    { 
     MethodIWantToRun(); 
    } 

    private void MethodIWantToRun() 
    { 
     SomeVariable++; 
    } 
} 

public class ChartGroup : INotifyPropertyChanged 
{ 
    public event PropertyChangedEventHandler PropertyChanged; 

    int _myProperty; 
    public int MyProperty 
    { 
     set { 
      _myProperty = value; 
      NotifyPropertyChanged(); 
     } 
    } 

    private void NotifyPropertyChanged([CallerMemberName] String propertyName = "") 
    { 
     if (PropertyChanged != null) 
     { 
      PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 
     } 
    } 
} 

전화처럼 뭔가를하고 싶은 생각 :

ChartGroupCollection chartGroupCollection = new ChartGroupCollection(); 
var group = new ChartGroup(); 
chartGroupCollection.Add(group); 
group.MyProperty = 3;