public void Main()
{
var components = new List <IComponent>
{
new ConcreteComponentA(),
new ConcreteComponentB()
};
Console.WriteLine("The client code works with all visitors via the base VisitorPattern interface:");
var visitor1 = new XmlExportVisitor();
Client.ClientCode(components, visitor1);
Console.WriteLine();
Console.WriteLine("It allows the same client code to work with different types of visitors:");
var visitor2 = new PdfExportVisitor();
Client.ClientCode(components, visitor2);
}
private static void Visitor()
{
Book earth = new Encyclopedia();
earth.name = "Big Earth!";
earth.author = "Jose S. Massey";
earth.categoryName = "Encyclopedia";
Book daily = new Magazine();
daily.name = "Daily Magazine";
daily.author = "Wayne D. Eakin";
daily.categoryName = "Magazine";
IBookExportVisitor xmlExportVisitor = new XmlExportVisitor();
IBookExportVisitor jsonExportVisitor = new JsonExportVisitor();
earth.Accept(xmlExportVisitor);
daily.Accept(jsonExportVisitor);
}