Does .NET have a built-in EventArgs?

Question

I am getting ready to create a generic EventArgs class for event args that carry a single argument:

public class EventArg : EventArgs
{
    // Prope         


        

Answer 1

It does exist. At least, it does now.

You can find DataEventArgs in some different Microsoft assemblies/namespaces, for instance Microsoft.Practices.Prism.Events. However these are namespaces that you might not find natural to include in your project so you might just use your own implementation.