public MainWindow()
{
InitializeComponent();
MainWindowViewModel viewModel = new MainWindowViewModel();
this.DataContext = viewModel;
Closing += viewModel.OnWindowClosing;
}
public PrintBarcodeCommand(MainWindowViewModel viewModel)
{
this.viewModel = viewModel;
this.viewModel.PropertyChanged += (s, e) =>
{
if (this.CanExecuteChanged != null)
{
this.CanExecuteChanged(this, new EventArgs());
}
};
}
