A small and helpful class that I find myself adding to every single project I start these day is ”GenericEventArgs”.
Microsoft included the System.EvenHandler<T> class in .NET, taking away the need to create custom delegates to enable the use of custom event arguments . This class takes it one step further. It’s a simple generic class with the signature EventArgs<T>, deriving from System.EventArgs. It accepts a single instance of T thru the constructor which it exposes via a property “Value” of the type T.
Now where I would earlier create custom eventarg classes to pass a single argument with an event, I simply use this generic implementation.
Monsieur Rask 