private static void Main(string[] args)
{
var customers = new List <Customer>
{
new Customer {
City = "Phoenix", FirstName = "John", LastName = "Doe", ID = 1
},
new Customer {
City = "Phoenix", FirstName = "Jane", LastName = "Doe", ID = 500
},
new Customer {
City = "Seattle", FirstName = "Suki", LastName = "Pizzoro", ID = 3
},
new Customer {
City = "New York City", FirstName = "Michelle", LastName = "Smith", ID = 4
}
};
var pxhCustomers = customers
.Where(c => c.City == "Phoenix" && c.ID < 500)
.OrderBy(c => c.FirstName);
foreach (var cust in pxhCustomers)
{
Console.WriteLine($"{cust.LastName}, {cust.FirstName} from {cust.City }");
}
BizRulesDeleate addDel = (x, y) => x + y;
BizRulesDeleate multiplyDel = (x, y) => x * y;
var data = new ProcessData();
data.Process(2, 3, addDel);
data.Process(2, 3, multiplyDel);
Action <int, int> myAction = (x, y) => Console.WriteLine("add action " + (x + y));
Action <int, int> myMultiplyAction = (x, y) => Console.WriteLine("multiply action " + (x * y));
data.ProcessAction(2, 3, myAction);
data.ProcessAction(2, 3, myMultiplyAction);
Func <int, int, int> functionAddDelegate = (x, y) => x + y;
Func <int, int, int> functionMultiplyDelegate = (x, y) => x * y;
data.ProcessFunction(3, 2, functionAddDelegate);
data.ProcessFunction(3, 2, functionMultiplyDelegate);
var worker = new Worker();
// worker.WorkPerformed += new EventHandler<WorkPerformedEventArgs>(WorkPerformed);
// worker.WorkCompleted += new EventHandler(WorkCompleted);
// delegate inference:
// worker.WorkPerformed += WorkPerformed;
// worker.WorkCompleted += WorkCompleted;
// to remove the delegate from the handler:
// worker.WorkCompleted -= WorkCompleted;
// anonymous methods:
// worker.WorkPerformed +=
// delegate (object o, WorkPerformedEventArgs e)
// {
// Console.WriteLine($"Work Performed: {e.Hours} hour(s) of {e.WorkType}");
// };
// worker.WorkCompleted += delegate(object o, EventArgs e) { Console.WriteLine("Work completed"); };
// lambdas
worker.WorkPerformed += (o, e) =>
{
Console.WriteLine($"Work Performed: {e.Hours} hour(s) of {e.WorkType}");
Console.WriteLine("This line just shows how you can have multiple lines of code in a lambda.");
};
worker.WorkCompleted += (o, e) => Console.WriteLine("Work completed");
worker.Dowork(8, WorkType.GenerateReports);
}
public void Process(int x, int y, BizRulesDeleate del)
{
var result = del(x, y);
Console.WriteLine(result);
}
