public MainWindow()
{
_viewModel = new ViewModel();
_viewModel.OnMessage += OnMessage;
DataContext = _viewModel;
InitializeComponent();
}
public MainWindow()
{
this.DataContext = (_viewModel = new ViewModel());
InitializeComponent();
_service = new WCFChatServiceClient(new InstanceContext(this));
_viewModel.Username = "******";
_viewModel.Connected = false;
_viewModel.ConnectButtonEnabled = true;
}