// note we have to pass in
public Person(string name, clockTower tower)
{
_name = name;
_tower = tower; // has ref to tower
// wireup a anonymous method, method, lambda,...
_tower.Chime += () => Console.WriteLine("{0} heard the clock chime", _name);
// example two - have to take in two parameters
_tower.Chime2 += (object sender, EventArgs args) => Console.WriteLine("{0} heard the clock chime", _name);
// example three - using custom event args
_tower.Chime3 += (object sender, ClockTowerEventArgs args) => {
Console.WriteLine("{0} heard the clock chime", _name);
switch (args.Time)
{
case 6:
Console.WriteLine("{0} is waking up.", _name);
break;
case 17:
Console.WriteLine("{0} is going home.", _name);
break;
}
};
}
// add functionality to a class where you do not have access to the source
private static void Example1()
{
var ct = new clockTower(); // ignore this, im using the person class used in another example to reduce code
var p = new Person("John", ct);
p.SayHello();
var op = new Person("Sally", ct);
p.SayHelloToOtherPerson(op);
}
/// <summary>
/// Steps:
/// Example 1: Create a delegate "EventHandler"
/// Create a instance of this event handler in the object dispatching the event ie., clock tower
/// Pass a reference of this instance to the objec that will listen
/// Use this reference to "wire up" code to respond using anonymous methods, lambda expression,...
/// </summary>
private static void Example1()
{
var tower = new clockTower();
#if DEBUG
#pragma warning disable 0219
#endif
var john = new Person("John", tower);
#if DEBUG
#pragma warning restore 0219
#endif
tower.ChimeFivePM();
tower.ChimeSixAM();
// cannot differentiate between the two chimes, see Example 2
}
