void HandleSelect(object sender, SelectedItemChangedEventArgs e)
        {
            var theTask        = (Task)e.SelectedItem;
            var taskDetailPage = new TaskDetailPage(fullDescription);

            taskDetailPage.BindingContext = theTask;
            Navigation.PushAsync(taskDetailPage);
        }
 void HandleSelect(object sender, SelectedItemChangedEventArgs e)
 {
     var theTask = (Task)e.SelectedItem;
     var taskDetailPage = new TaskDetailPage (fullDescription);
     taskDetailPage.BindingContext = theTask;
     Navigation.PushAsync (taskDetailPage);
 }