// "Visitor"
// "ConcreteVisitor1"
public void TestVisitorPattern()
{
// Setup structure
Element aE = new ConcreteElementA();
Element bE = new ConcreteElementB();
var o = new ObjectStructure();
o.Attach(aE);
o.Attach(bE);
// Create visitor objects
var v1 = new ConcreteVisitor1();
var v2 = new ConcreteVisitor2();
// Structure accepting visitors
o.Accept(v1);
o.Accept(v2);
o.Detach(aE);
o.Detach(bE);
// Wait for user
Console.Read();
}