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Command binding issue with using CommandReference and CommandGroup

Posted By:      Posted Date: September 02, 2010    Points: 0   Category :WPF
 
I'm trying to write an app using the MVVM pattern but I'm running into an command binding issue. I'm trying to bind a button to multiple commands. To do this I'm using the CommandReference class (this is from the MVVM toolkit) and the CommandGroup class (I found this CodeProject). Here is a simplified version of my xaml: <Window.Resources> <c:CommandReference x:Key="TestCommand" Command="{Binding Path=TestCommand}"/> <c:CommandGroup x:Key="TestCommandGroup"> <c:CommandReference Command="{StaticResource TestCommand}"/> <c:CommandReference Command="{StaticResource TestCommand}"/> </c:CommandGroup> </Window.Resources> <Grid> <Button Content="Command Test" Command="{StaticResource TestCommandGroup}"/> </Grid> If I set the DataContext of the window to itself, this works just fine and the TestCommand will execute twice. The problem occurs when I want to follow the MVVM pattern and I set the DataContext of the window to a ViewModel. When I do this the button becomes disabled (I don't see any binding errors in the output window). I tried debugging this to see what was going on. If I set a breakpoint on the PropertyChangedCallback for the Command, I noticed the sequence this gets called is diff


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