public static void NoMain()
{
//a)Anonymous Method
Worker worker = new Worker();
worker.workPerformedeve += delegate(object sender, WorkPerformedEventArgs e) { Console.WriteLine("Hours worked in a day" + e.Hours + " " + e.Work); };
AddNumbers addDel = (x, y) => x + y; //Anonymous method's data type will be figured out by compiler depending on type of delegate it is assigned to
int result = addDel(1, 1); //this is assumed to return value though return keyword not used as our delegate return int
//b)If a Delegate is without Parameter, How to Use Lamda there
LogDelegate log = () => { return(true); };
//c) Using Worker Class //No need of Anonymous method
worker.workPerformedeve += (s, e) => { Console.WriteLine("Hours worked" + e.Hours + " " + e.Work); }; // With { } we can write multiple lines of code.
//d) Following business rule, not hardcoging the handler method
RulesDel adddel = (x, y) => x + y;
RulesDel muldel = (x, y) => x * y;
Process pc = new Process();
pc.ProcessData(2, 3, adddel);//Call a method which invokes RulesDel delegate
//e) Inbuilt Action Delegate
Action <int, int> actAdd = (x, y) => Console.WriteLine(x + y);
Action <int, int> multAct = (x, y) => Console.WriteLine(x * y);
pc.ProcessActionData(2, 3, multAct);
//f) Func delegate(last T is out type)
Func <int, int, int> addFuc = (x, y) => x + y;
Func <int, int, int> mulFunc = (x, y) => x * y;
pc.ProcessFuncData(2, 3, mulFunc);
//Other way to understand Func
string[] strArr = new string[10];
Func <string, bool> funcDel;
if (strArr.Length > 5)
{
funcDel = LogToEvent;
}
else
{
funcDel = LogToFile;
};
}
public void ProcessData(int x, int y, RulesDel rules)
{
var result = rules(x, y);
Console.WriteLine(result);
}
