Visitor Mode C #

usingSystem;usingSystem.Collections;usingSystem.Collections.Generic;usingSystem.Linq;namespaceconsoleapplication1{classProgram { Public InterfaceIvisitor {voidVisit (Printera a); voidVisit (Printerb b); }         Public Abstract classPrinter { Public Abstract voidAccept (Ivisitor visitor);  Public Abstract voidPrint (); }         Public classPrintera:printer { Public Override voidAccept (Ivisitor visitor) {visitor. Visit ( This); }             Public Override voidPrint () {Console.WriteLine ("I am is a"); }        }         Public classPrinterb:printer { Public Override voidAccept (Ivisitor visitor) {visitor. Visit ( This); }             Public Override voidPrint () {Console.WriteLine ("I am b"); }        }         Public classConcretevisitor:ivisitor { Public voidVisit (Printera a) {a.print (); }             Public voidVisit (Printerb b) {b.print (); }        }        Static voidMain (string[] args) {Printer a=NewPrintera (); Printer b=NewPrinterb (); A.accept (Newconcretevisitor ()); B.accept (Newconcretevisitor ()); }    }}

Visitor Mode C #