Why use EventArgs.Empty instead of null?

Question

I recall reading, on multiple occasions and in multiple locations, that when firing the typical event:

protected virtual OnSomethingHappened()
{
    this.Som         


        

Answer 1

If you're using a general-purpose method which has the EventHandler signature that's called from any event handler and is passed both the object sender and EventArgs e, it can call e.ToString(), e.g., for logging events, without worrying about a null pointer exception.