public async Task ShowDialogAsync(DialogViewModel viewModel, MetroDialogSettings settings = null)
{
var view = ViewLocator.GetViewForViewModel(viewModel);
var dialog = view as BaseMetroDialog;
if (dialog == null)
{
throw new InvalidOperationException($"The view {view.GetType()} belonging to view model {viewModel.GetType()} does not inherit from {typeof(BaseMetroDialog)}");
}
dialog.Resources.MergedDictionaries.Add(new ResourceDictionary
{
Source = new Uri("pack://application:,,,/MahApps.Metro;component/Styles/FlatButton.xaml")
});
var firstMetroWindow = Application.Current.Windows.OfType <MetroWindow>().First();
await firstMetroWindow.ShowMetroDialogAsync(dialog, settings);
await viewModel.Task;
await firstMetroWindow.HideMetroDialogAsync(dialog, settings);
}