private void BtnShowRegions_Click(object sender, RoutedEventArgs e) { var regions = companyEntities.Region.ToList(); var localizations = companyEntities.Localization.ToList(); foreach (var region in regions) { var startLocal = localizations.Find(l => l.id == region.idStartLocalization); var endLocal = localizations.Find(l => l.id == region.idEndLocalization); if (MyMap.IsPolylineInLocalization(startLocal)) { continue; } MyMap.DrawSquare(startLocal, endLocal); regionVisibility = true; } }