5

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)?

3
  • 1
    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
    Feb 17, 2011 at 12:40
  • thx. I assumed answer will be that its thing of taste. so i posted it here.
    – grabah
    Feb 17, 2011 at 13:03
  • 1
    In VS2012, it automatically creates the second one now.
    – DaveShaw
    Mar 7, 2013 at 16:47

2 Answers 2

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.

0
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;
};

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