How to get a delegate object from an EventInfo?

Question

I need to get all events from the current class, and find out the methods that subscribe to it. Here I got some answers on how to do that, but I don\'t know how I can get th

Answer 1

For my case, the field value (class ToolStripMenuItem, field EventClick) frustratingly is of type object, not delegate. I had to resort to the Events property that Les mentioned in his answer, in a way I got from here. The field EventClick in this case only holds the key to the EventHandlerList stored in this property.

Some other remarks:

• The rule fieldName = "Event" + eventName I employed will not work in every case. Unfortunately there is no common rule for linking the event name to the field name. You might try to use a static dictionary for the mapping, similar to this article.

• I'm never quite sure about the BindingFlags. In another scenario, you might have to adjust them.

  /// 
  
  /// Gets the EventHandler delegate attached to the specified event and object
  /// 
  /// object that contains the event
  /// name of the event, e.g. "Click"
  public static Delegate GetEventHandler(object obj, string eventName)
  {
      Delegate retDelegate = null;
      FieldInfo fi = obj.GetType().GetField("Event" + eventName, 
                                             BindingFlags.NonPublic | 
                                             BindingFlags.Static |
                                             BindingFlags.Instance | 
                                             BindingFlags.FlattenHierarchy |
                                             BindingFlags.IgnoreCase);
      if (fi != null)
      {
          object value = fi.GetValue(obj);
          if (value is Delegate)
              retDelegate = (Delegate)value;
          else if (value != null) // value may be just object
          {
              PropertyInfo pi = obj.GetType().GetProperty("Events",
                                             BindingFlags.NonPublic |
                                             BindingFlags.Instance);
              if (pi != null)
              {
                  EventHandlerList eventHandlers = pi.GetValue(obj) as EventHandlerList;
                  if (eventHandlers != null)
                  {
                      retDelegate = eventHandlers[value];
                  }
              }
          }
      }
      return retDelegate;
  }