Difference in event subscription formatting

问题

Is there a difference between these two formats for subscribing to events:

Style 1:

foo.BarEvent += FooEventMethod;

Style 2:

foo.BarEvent += new FooEventHandler(FooEventMethod);

回答1:

This is c# 1.0 style of subscribing an event.

foo.BarEvent += new FooEventHandler(FooEventMethod);

Starting from c# 2.0 you're allowed to subscribe event like this

foo.BarEvent += FooEventMethod;

above code is exactly equal to version1 code, what happens is compiler will create new FooEventHandler(FooEventMethod) in background for you.

来源：https://stackoverflow.com/questions/23708421/difference-in-event-subscription-formatting