Wiring EventHandlers

Question

Is there a difference between

Object.Event += new System.EventHandler(EventHandler);
Object.Event -= new System.EventHandler(EventHandler);

AND

Object.Event += EventHandler;
Object.Event -= EventHandler;

? If so, what?

Aren't they both just pointers to methods?

possible duplicate of [C# Event handlers](http://stackoverflow.com/questions/26877/c-sharp-event-handlers) — nawfal, Jul 06 '14 at 20:49

score 6 · Accepted Answer · answered May 27 '11 at 14:13

6

Both are Exactly same. But

Object.Event += EventHandler;
Object.Event -= EventHandler;

The above example compiles fine only in 3.0 or later version of C#, while if you are in 2.0 or before you can only use following construct.

Object.Event += new System.EventHandler(EventHandler);
Object.Event -= new System.EventHandler(EventHandler);

Look more about at Type inferencing. search for "Type Inference"

answered May 27 '11 at 14:13

crypted

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A female who knows what type inferencing is? Oh god, please... Marry me? :-P lol – Maxim Gershkovich May 30 '11 at 06:11

score 2 · Answer 2 · edited May 23 '17 at 12:12

2

No, they are exactly the same. The second version is purely a shorthand where the compiler creates an instance of the event handler for you. Just like simplified property syntax, using etc ... all compiler magic!

See this related question:

Difference between wiring events using "new EventHandler<T>" and not using new EventHandler<T>"?

edited May 23 '17 at 12:12

Community

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answered May 27 '11 at 14:01

ColinE

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Wiring EventHandlers

2 Answers2