public MainWindow()
{
this.InitializeComponent();
SDateField dep = new SDateField();
SDateField ret = new SDateField();
Cell<bool> valid = dep.SelectedDate.Lift(ret.SelectedDate, (d, r) => d <= r);
SButton ok = new SButton(valid) { Content = "OK", Width = 75 };
this.DeparturePlaceholder.Children.Add(dep);
this.ReturnPlaceholder.Children.Add(ret);
this.ButtonPlaceholder.Children.Add(ok);
}
public MainWindow()
{
this.InitializeComponent();
SDateField dep = new SDateField();
SDateField ret = new SDateField();
Rule r1 = new Rule((d, r) => d <= r);
Rule r2 = new Rule((d, r) => !Unlucky(d) && !Unlucky(r));
Rule rule = r1.And(r2);
Cell<bool> valid = rule.Reify(dep.SelectedDate, ret.SelectedDate);
SButton ok = new SButton(valid) { Content = "OK", Width = 75 };
this.DeparturePlaceholder.Children.Add(dep);
this.ReturnPlaceholder.Children.Add(ret);
this.ButtonPlaceholder.Children.Add(ok);
}