public object Clone()
{
Product p = null;
try
{
p = new UnderlinePen(this.ulchar);
}
catch (NotImplementedException e)
{
Console.WriteLine(e.Message);
}
return(p);
}
public static void Main()
{
Manager mgr = new Manager();
UnderlinePen underline = new UnderlinePen('~');
MessageBox mbox = new MessageBox('*');
MessageBox sbox = new MessageBox('/');
mgr.register("strong message", underline);
mgr.register("warning box", mbox);
mgr.register("slash box", sbox);
Product p1 = mgr.Create("strong message");
p1.Use("Hello world.");
Product p2 = mgr.Create("warning box");
p2.Use("Hello world");
Product p3 = mgr.Create("slash box");
p3.Use("Hello world");
}