public static void Print(this Printers.Printer printer, string[] text) { for (int i = 0; i < text.Length; i++) { printer.Print(text[i]); } }
static void Main(string[] args) { ColorPrinter colorPrinter = new ColorPrinter(); colorPrinter.Print("Who am I? "); colorPrinter.Print("\nPrinting in blue ", ConsoleColor.Blue); PhotoPrinter photoPrinter = new PhotoPrinter(); Photo waterfall = new Photo("Waterfall", 1024); photoPrinter.Print(waterfall); photoPrinter.Print("Who am I? "); Printer printer = colorPrinter; printer.Print("I am used as base now!)"); printer = photoPrinter; printer.Print("I am used as base now!)"); printer = new Printer(); printer.Print("I am base now!)"); Console.ReadLine(); }