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, Apr 21 '20 at 14:45

score 72 · Accepted Answer · answered Feb 23 '10 at 16:19

72

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 '10 at 16:19

Arcturus

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This is so simple it is brilliant. Nice :) – Richard Moore Jul 08 '20 at 20:17

score 13 · Answer 2 · answered Feb 23 '10 at 16:20

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 '10 at 16:20

sidney.andrews

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Use DataContext as CommandParameter in WPF

2 Answers2