private void SafeRaiseEvent(EmptyDelegate del)
{
if (del == null)
{
return;
}
var invocationList = del.GetInvocationList();
foreach (var current in invocationList)
{
((EmptyDelegate)current).BeginInvoke(_emptyDelegateAsyncCallback, current);
}
}
static void Main(string[] args)
{
Converter converter = new Converter();
Int2StringDelegate del = new Int2StringDelegate(converter.ConvertToString);
//variabile di tipo implicito
var del2 = new Int2StringDelegate(converter.ConvertToString);
//creazione implicita delegate
Int2StringDelegate isdel = converter.ConvertToString;
Int2StringDelegate del3 = (Int2StringDelegate)Delegate.CreateDelegate(typeof(Int2StringDelegate), converter, "ConvertToString");
del3(123);
string str = isdel(123);
str = isdel.Invoke(123);
//ottenere informazioni
Console.WriteLine("ottenere informazioni sul delegate");
var method = isdel.Method;
Console.WriteLine(method.Name);
var target = isdel.Target;
Console.WriteLine(target.ToString());
Console.WriteLine("ottenere informazioni sul delegate con metodo statico");
isdel = Converter.StaticConvertToString;
Console.WriteLine(isdel.Method);
Console.WriteLine(isdel.Target);
UseDelegate(Converter.StaticConvertToString, 1, 2, 3);
EmptyDelegate multicast = Metodo1;
multicast += Metodo2;
multicast += Metodo2; //un metodo può essere aggiunto più volte
multicast();
multicast -= Metodo2;
Delegate[] list = multicast.GetInvocationList();
foreach (Delegate delInstance in list)
{
Console.WriteLine("invoco {0}", delInstance.Method);
(delInstance as EmptyDelegate).Invoke();
//delInstance.DynamicInvoke();
}
multicast = (EmptyDelegate)Delegate.Combine(new EmptyDelegate(Metodo1), new EmptyDelegate(Metodo2));
multicast -= Metodo1;
multicast -= Metodo2;
if (multicast != null)
{
multicast.Invoke();
}
Int2StringDelegate multi = converter.ConvertToString;
multi += converter.RaddoppiaNumero;
Console.WriteLine(multi(10));
int x = 1;
RefDelegate multiref = Raddoppia;
multiref += Triplica;
multiref(ref x);
Console.WriteLine(x);
ConvertOriginToDest <int, string> siconvert = converter.StringToInt;
int i = siconvert("123");
ConvertOriginToDest <string, int> isconvert = converter.Int2String;
string s = isconvert(123);
Func <int, int> func = Fattoriale;
int n = EvaluateFunction <int>(func, 10);
Func <double, double> funcRadice = Math.Sqrt;
double radice = EvaluateFunction <double>(funcRadice, 144);
double log = EvaluateFunction(Math.Log10, 100.0);
//stampo l'errore
OperazionePericolosa(PrintError);
//covarianza func
Func <string> funcHello = Hello;
Func <object> funcObj = funcHello;
object obj = funcObj();
//controvarianza Action
Action <object> actObj = UseObject;
Action <string> actStr = actObj;
actStr("Hello");
}
