private void Draw() { drawer.Clear(); Markers mark; SolidColorBrush color; foreach (var v in data) { switch (v.Meter) { case "Lecco": mark = Markers.CIRCLE; color = Brushes.Blue; break; case "helsinki": mark = Markers.CROSS; color = Brushes.Red; break; case "tampere": mark = Markers.DIAMOND; color = Brushes.Green; break; default: mark = Markers.OTHER; color = Brushes.Orange; break; } drawer.DrawDataPoint(new Point(v.X, v.Y), color, mark); } }