And the Winner is..

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Looks like David Stone one out by under a
minute… If John
St. Clair had only hit “add” a little faster…"urn:schemas-microsoft-com:office:office" />

"urn:schemas:contacts" />David and
John both hit the nail on the head.. here is
David’s response:

Ø
No... because in the second
Format method, the format param is "{0}" and the args is an Object[].

Ø
Thus the args parameter is not null
in and of itself. It has a null string in the first slot, but the first method
just gave it an Object[], so it won't throw any exception.

= "urn:schemas-microsoft-com:office:smarttags"
/>Kevin
Dente tried it out and said it didn’t throw… Hmm… I just checked it
and on my machine it doesn’t throw, here is my code:

    static void
Main(string[] args)

    {

       string firstName = null;

      
Console.WriteLine (String.Format ("{0}",
firstName));

             
Console.ReadLine();
       }

Brad, Guy of .NET makes a valid
point that we generally treat null and String.Empty to be the samething.. true,
true, and I encourage others to do the same but I don’t see how that effects
this code..

..brad