private void OnRaiseWeirdEvent(int data)
{
EventHandler <WeirdEventArgs> handler = _raiseWeirdEvent;
int eventBeingFired = 1;
if (handler != null)
{
// We iterate over each internal handler.
// Then construct special event arguments for each call
// Which will pass in the specific event number being
// fired.
//
// Since these are invoked sequentially, it would also
// be possible to use a single instance of WeirdEventArgs
// and then modify EventNumberInvoked prior to each call.
foreach (EventHandler <WeirdEventArgs> item in handler.GetInvocationList())
{
var args = new WeirdEventArgs()
{
State = data,
NumEvents = _numberOfEvents,
EventNumberInvoked = eventBeingFired++,
};
Console.WriteLine($"Invoking WeirdEvent: data={data}; event={eventBeingFired}");
item(this, args);
}
}
}
private static void PerformWeirdProcess2(object sender, WeirdEventArgs e)
{
Console.WriteLine($"Performing Weird Process 2: data={e.State}; event={e.EventNumberInvoked}");
}