Implementing “close window” command with MVVM

Question

So my first attempt did everything out of the code behind, and now I\'m trying to refactor my code to use the MVVM pattern, following the guidance of the MVVM in the box inf

Answer 1

using MVVM-light toolkit:

In the ViewModel:

 public void notifyWindowToClose()
{
    Messenger.Default.Send(
        new NotificationMessage(this, "CloseWindowsBoundToMe")
    );
}

And in the View:

 Messenger.Default.Register(this, (nm) =>
{
    if (nm.Notification == "CloseWindowsBoundToMe")
    {
        if (nm.Sender == this.DataContext)
            this.Close();
    }
});