static void Main(string[] args)
{
//PrintToConsole("hello there!");
DelegateToPrint functionToPrint = PrintToConsole;
functionToPrint("hello there!");
}
static void Main(string[] args)
{
Console.WriteLine(DateTime.Now.Second);
System.Threading.Thread.Sleep(2000);
Console.WriteLine(DateTime.Now.Second);
Console.WriteLine();
Program.PrintToConsole("Hello World!");
DelegateToPrint functionToPrint = PrintToConsole;
functionToPrint("Hello World From a delegate function!");
Action <string> actionPrint = PrintToConsole1;
DelegateToPrint functonDoNothing = DoNothing;
functonDoNothing("Nothing");
Program.PrintStringByFunction(functionToPrint, "Hello from delegate passed as a parameter");
Console.WriteLine();
DelegateToPrint delegateToPrint1 = PrintToConsole1;
delegateToPrint1("Hello");
DelegateToPrint delegateToPrint2 = PrintToConsole2;
delegateToPrint2("Hello");
Console.WriteLine();
DelegateToPrint delegateToPrintChain = PrintToConsole1;
delegateToPrintChain += PrintToConsole2;
delegateToPrintChain += PrintToConsole3;
delegateToPrintChain("Hello");
delegateToPrintChain += PrintToConsole2;
delegateToPrintChain -= PrintToConsole2;
Console.WriteLine();
var functionsUsedByDelegate = delegateToPrintChain.GetInvocationList();
foreach (var del in functionsUsedByDelegate)
{
Console.WriteLine(del);
}
Console.WriteLine();
delegateToPrint1.Invoke("Invoke method used");
delegateToPrint1?.Invoke("Not null");
}
private static void PrintStringByFunction(DelegateToPrint delegateToPrint, string stringToPrint)
{
delegateToPrint(stringToPrint);
}