/// <summary>
/// Callback
/// Recebe delegate como parâmetro e usa-o para invocar o metodo
/// Metodo SendString não sabe o que PrintString executa!!!
/// PrintString é um método Callback
/// Asynchronous Callback
/// </summary>
/// <param name="ps"></param>
public static void SendString(PrintString ps)
{
ps("Benfia é o maior");
}
public static void SendString(PrintString ps, string s)
{
ps(s);
}
static void Main(string[] args)
{
#region 1 - Delegar noutro método
//cria instâncias dos delegates
NumberChanger nc1 = new NumberChanger(Delegates.AddNum);
//ou
//nc1 = Delegates.AddNum;
NumberChanger nc2 = new NumberChanger(Delegates.MultNum);
//chama os métodos usando os delegates
nc1(25);
Console.WriteLine("Numero: {0}", Delegates.Num);
nc2(5);
Console.WriteLine("Numero: {0}", Delegates.Num);
Console.ReadKey();
#endregion
#region 2 - Delegar noutro método
Pessoa p = new Pessoa("Ola", new DateTime(2000, 12, 24));
//cria instâncias de delegates
MyDelegate1 nc3 = new MyDelegate1(p.GetIdade);
MyDelegate2 nc4 = new MyDelegate2(Console.WriteLine);
//o mesmo que
//nc4 = Console.WriteLine;
//chama metodos usando delegates
int idade = nc3();
Console.WriteLine("Idade: {0}", idade);
idade = p.GetIdade();
nc4("Nascimento: " + p.Nasci.ToString());
Console.ReadKey();
#endregion
#region 3 - Delegates como parâmetros
PrintString ps1 = new PrintString(Print.WriteToScreen);
PrintString ps2 = new PrintString(Print.WriteToFile);
Print.SendString(ps1);
Print.SendString(ps2);
Console.ReadKey();
#endregion
#region 4 - Delegates como parâmetros
//cria delegate com callback associado
Exec d1 = new Exec(Delegates.AddNumNum);
//invoca metodo com callback no parametro
int aux = Delegates.ExecSomething(12, 13, d1);
//invoca delegate
Print.SendString(ps1, "Resultado: " + aux.ToString());
Console.ReadKey();
#endregion
#region 5 - Mulcasting Delegates
MethodClass obj = new MethodClass();
MyDelegate2 nc5 = new MyDelegate2(Console.WriteLine);
MyDelegate2 m1 = obj.Method1;
MyDelegate2 m2 = obj.Method2;
nc5 = Console.WriteLine;
//ou
MyDelegate2 allMethodsDelegate = m1 + m2;
allMethodsDelegate += nc5;
allMethodsDelegate("-Teste-");
//ao invocar allMethodsDelegate serão executados Method1, Method2 e WriteLine
Console.ReadKey();
#endregion
#region 6 - Outros Delegates
MethodClass.Method3(new int[] { 3, 4, 5, 6 }, Console.WriteLine);
Console.ReadKey();
MethodClass.Method3(new int[] { 3, 4, 5, 6 }, MethodClass.ShowOdd);
Console.ReadKey();
#endregion
#region 7 - Anonymous Methods
MyPrint print = delegate(int val) {
Console.WriteLine("Inside Anonymous method. Value: {0}", val);
};
print(100);
#endregion
#region 8 - Eventos
FileLogger fl = new FileLogger(@"c:\temp\Process.log");
MyClass myClass = new MyClass();
// Subscribe the Functions Logger and fl.Logger
myClass.Log += new MyClass.LogHandler(MyClass.Logger); //Event Handlers
myClass.Log += new MyClass.LogHandler(fl.Logger);
// The Event will now be triggered in the Process() Method
myClass.Process();
fl.Close();
#endregion
#region 10 - Events Handler
Counter c = new Counter(new Random().Next(10));
c.ThresholdReached += c_ThresholdReached;
Console.WriteLine("press 'a' key to increase total");
while (Console.ReadKey(true).KeyChar == 'a')
{
Console.WriteLine("adding one");
c.Add(1);
}
#endregion
#region 9 - Eventos
// Create a new clock
Clock theClock = new Clock();
// Create the display and tell it to subscribe to the clock just created
DisplayClock dc = new DisplayClock();
dc.Subscribe(theClock);
// Create a Log object and tell it to subscribe to the clock
LogClock lc = new LogClock();
lc.Subscribe(theClock);
// Get the clock started
theClock.Run();
#endregion
}