Use DataContext as CommandParameter in WPF

Question

I want to pass the current DataContext (which is an instance of a ViewModel) as a CommandParameter on a WPF Button. What would be the syntax I should use?

<Button 
  x:Name="btnMain"
  Command="infra:ApplicationCommands.MyCommand"
  CommandParameter="{Binding ???}"
 />

Notice that the order matters here. CommandParameter must come before Command or else you'll see only null being passed as a parameter. — RedX
– RedX, Commented Apr 21, 2020 at 14:45

Arcturus · Accepted Answer · 2010-02-23 16:19:22Z

75

An empty Binding, without a path, binds directly to the DataContext, so

{Binding}

is enough to make it work! Your example:

<Button 
  x:Name="btnMain"
  Command="infra:ApplicationCommands.MyCommand"
  CommandParameter="{Binding}"
 />

answered Feb 23, 2010 at 16:19

Arcturus

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1 Comment

Richard Moore Over a year ago

This is so simple it is brilliant. Nice :)

sidney.andrews · Accepted Answer · 2010-02-23 16:20:22Z

13

<Button 
   x:Name="btnMain"
   Command="infra:ApplicationCommands.MyCommand"
   CommandParameter="{Binding}" 
/>

as long as the button is within the Visual tree of the item with the DataContext

answered Feb 23, 2010 at 16:20

sidney.andrews

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