WPF Two Commands handlers, One Command

Posted by Aran Mulholland on Stack Overflow See other posts from Stack Overflow or by Aran Mulholland
Published on 2010-03-15T04:36:26Z Indexed on 2010/03/15 4:39 UTC
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Im deriving from a third party control. It is implementing ApplicationCommands.SelectAll. However the behaviour i want is slightly different. there is no virtual method i can override, and when i register a class handler, like so

     CommandManager.RegisterClassCommandBinding(typeof(MyDerivedControl), new CommandBinding(ApplicationCommands.SelectAll, new ExecutedRoutedEventHandler(OnExecutedSelectAll), new CanExecuteRoutedEventHandler(OnCanExecuteSelectAll)));

My methods do not get called. The third party control i am deriving from is marking

e.Handled=true;

in its command handlers ( i know this cause i have seen the source, but i cant modify it )

What can i do?

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