Yes, you can - separate with commas :-)
I'm not sure if in the question you want to use two KeyBindings to show that the user will have to double-click the key. But this is what I was looking for. If this is the reason, then this mail will work.
For example, I wanted to use + to go forward, and ++ - to double jump and - to return - to return twice to my application:
<KeyBinding Key="OemMinus" Modifiers="Control" Command="{Binding GoBack}"/> <KeyBinding Key="OemMinus,OemMinus" Modifiers="Control" Command="{Binding GoBack2X}"/>
The reason I realized this was because I know that in VisualStudio you have a ton of double-key commands, such as comments or collapsing areas. And you know that VS2010 is written in WPF. So I looked at the VS menu, and there are a lot of commands separated by commas: View> Cntr + W Solution Navigator F. I tried it and it worked!
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