private new void

[jjmraz]

Hi,

I have seen some code recently that had the following method
signatures:

private new void Push(object o)

And

public new objectname FunctionName()

So my question is what is happening here? With the first one why would
new be with a void return type? With the second one I am assuming that
the function would return a new object of that type, correct?

JJ

 

[Nicholas Paldino [.NET/C# MVP]]

JJ,

In this case, the new is not related to the return type of the method.
Rather, new is used to indicate that the method shadows a method with the
same signature declared on the base class.

Hope this helps.

 

[Mattias Sjögren]

So my question is what is happening here?

The new modifier makes it explicit that you want your method to not
override a virtual method with the same name and signature in a base
class, but rather hide it. See
http://msdn.microsoft.com/library/en-us/csref/html/vclrfnewoppg.asp


Mattias

 

[jjmraz]

Ah it says use me instead of the one in the base call when called upon?

JJ

 

[Jon Skeet [C# MVP]]

Ah it says use me instead of the one in the base call when called upon?

Not quite. It says "this is actually a different method which happens
to have the same name, it's not trying to override another method".

See http://www.pobox.com/~skeet/csharp/faq/#override.new