public void RaiseEvent(object sender, TEventArgs e)
{
var handlers = new List <EventHandler <TEventArgs> >(weakReferences.Count);
lock (weakReferences)
{
weakReferences.Clear(true);
handlers.AddRange(weakReferences.Where(handler => handler != null));
}
foreach (var eventHandler in handlers)
{
eventHandler.Invoke(sender, e);
}
}