emphess .NET » ICommand http://www.emphess.net Christoph Menge's Blog Tue, 15 Jun 2010 00:50:30 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 ICommand.CanExecute() and NullReferenceException http://www.emphess.net/2008/04/10/icommandcanexecute-and-nullreferenceexception/ http://www.emphess.net/2008/04/10/icommandcanexecute-and-nullreferenceexception/#comments Thu, 10 Apr 2008 17:12:57 +0000 Christoph Menge http://www.emphess.net/?p=31 Have you ever tried to call ICommand.CanExecute()? It actually works fine, but only if you are not as naive as I am… Simply calling it without the proper know-how might result in a NullReferenceException, so what you should read is how to implement ICommandSource. See

MSDN: How To: Implement ICommandSource
MSDN: Implement ICommandSource Sample.

Not a big thing, but since google didn’t show anything for “ICommand.CanExecute NullReferenceException”, it might help somebody I hope…

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