C#

foreach (Process procName in
    Process.GetProcesses().Where
        (procName => procName.ProcessName.StartsWith("Test")))
{
    procName.Kill();
}

public EventHandler MyEvent;
private void OnMyEvent(EventArgs args) {
  EventHandler temp = MyEvent;
  if (temp != null) {
    Delegate[] handlers = temp.GetInvocationList();
    for(Int32 i = 0; i < handlers.Length; ++i) {
      ((EventHandler)handlers[i])(this, args);
    }
  }
}

removeButton.Click += new EventHandler(removeButton_Click);

EventInfo ei = removeButton.GetType().GetEvent("Click");
MethodInfo mir = ei.GetRaiseMethod(true);
MethodInfo[] mis = ei.GetOtherMethods(true);
MethodInfo mic = removeButton.GetType().GetMethod("OnClick", BindingFlags.Instance| BindingFlags.NonPublic| BindingFlags.Public| BindingFlags.FlattenHierarchy);

removeButton.Click -= subscribers[0] as System.EventHandler;
removeButton.Click += new EventHandler(removeButton_Click); //that's my event handler
removeButton.Click += subscribers[0] as System.EventHandler;