Question

two button (buttonA and buttonB) are binded with single Icommand (StartPuzzleCommand ).

  startPuzzleCommand = new DelegateCommand(delegate()
                {
                   // which control fire this action

                }); 

now the question is how can i get which button call the delegate on click..
Well this is my second day of learning mvvm,please suggest some help;
i am using CommandReference.cs and DelegateCommand.cs predefined classes……

Answer 1

How about:

startPuzzleCommand = new DelegateCommand<string>(
    delegate(string which)
    {

    });

And in your XAML:

<Button x:Name="buttonA"
        Command="{Binding StartPuzzleCommand}"
        CommandParameter="A" />

<Button x:Name="buttonB"
        Command="{Binding StartPuzzleCommand}"
        CommandParameter="B" />