Ref Vs Out Keyword

                                                 Ref Vs Out Keyword


Ref vs Out Keyword in C#
    Ref- 
    1)Ref parameter should have the same value.
    2)Ref keyword is used to pass an argument as a reference
    3) No Need to initialize out parameter before passing it.    
        Eg:=int a;
    4) Out parameter must be initialized before returning.

  Out - 
    1)Out parameters are not required to have value
    2)Out keyword is also used to pass an argument like ref keyword
    3)Must initialize Ref parameter else error.
       Eg:=int b=5;
     4) Ref parameter  initialized not necessary.


When to use Out and Ref Parameter?

1)When you want to return more than one values from a method then you can use out and ref parameters.

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