.NET (Core and Framework)

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// Attatches the specified handler to all events in eventSource <br />
// that have the same Type as the handler<br />
public void RegisterEvents(object eventSource, Delegate handler)<br />
{<br />
  if (eventSource == null || handler == null)<br />
  {<br />
    return;<br />
  }<br />
<br />
  // get a list of all events in the source<br />
  EventInfo[] events = eventSource.GetType().GetEvents();<br />
<br />
  if (events.Length > 0)<br />
  {<br />
    // go through each event and check if its type is the same <br />
    // as our handler.  if they are of the same type then<br />
    // attatch the handler to the event<br />
    foreach (EventInfo eventInfo in events)<br />
    {<br />
      if (eventInfo.EventHandlerType == handler.GetType())<br />
      {<br />
        eventInfo.AddEventHandler(eventSource, handler);<br />
      }<br />
    }<br />
  }<br />
}