what is a proper way to register eventHandler

Question

I was showing some of my code to a junior programer, and he asked me why am I registering functions for event handling like this:

button1.Click += new RoutedEventHandler(button1_Click);

and not like this:

button1.Click += button1_Click;

The only thing I could say was: because you just write += and press tab two times...

What is the difference between those two metods (if there is a difference)?

I would normally migrate this to Stack Overflow, however I know for a fact that it would simply be a duplicate there. However, I think it's OK for here too. — ChrisF
– ChrisF, Commented Feb 17, 2011 at 12:40
thx. I assumed answer will be that its thing of taste. so i posted it here. — grabah
– grabah, Commented Feb 17, 2011 at 13:03

ChrisF · Accepted Answer · 2011-02-17 12:39:44Z

6

The answer depends on what version of C# you are using.

The early versions required the new RoutedEventHandler while the newer versions don't.

They compile to the same code.

answered Feb 17, 2011 at 12:39

ChrisF

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Jesse C. Slicer · Accepted Answer · 2013-03-07 16:47:08Z

3

Personally, if what you're doing in the handler is really short and not shared with any other events, I like this form:

button1.Click += (sender, e) =>
{
    DoSomethingAwesome(e.RoutedEvent);
    e.Handled = true;
};

answered Mar 7, 2013 at 16:47

Jesse C. Slicer

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2 Answers 2