static void Main(string[] args)
{
var video = new Video()
{
Title = "My Vidoe!"
};
var videoEncoder = new VideoEncoder(); // publisher
var mailService = new MailService(); // subscriber
var msgService = new MessageService(); // subscriber
videoEncoder.videoEncoded += mailService.OnVideoEncoded;
videoEncoder.videoEncoded += msgService.OnVideoEncoded;
videoEncoder.Encode(video);
}
static void Main(string[] args)
{
var video = new Video()
{
Title = "bbbbb1"
};
var videoEncoder = new VideoEncoder(); //publisher
var mailService1 = new MailService1(); //subscriber 1
var mailService2 = new MailService2(); //subscriber 2
//var mailService3 = new MailService3();//subscriber 3 can be easily added by just adding new class
videoEncoder.VideoEncoded += mailService1.OnVideoEncoded; // publisher & subscriber signature must match
videoEncoder.VideoEncoded += mailService2.OnVideoEncoded; // publisher & subscriber signature must match
videoEncoder.Encode(video);
Console.WriteLine("Done");
Console.ReadLine();
}
static void Main(string[] args)
{
var videoFormatter = new VideoEncoder();
videoFormatter.VideoEncoded += new EmailService().SendEmail;
videoFormatter.VideoEncoded += new MessageService().SendText;
videoFormatter.Encode(new Video()
{
Name = "My Video"
});
Console.ReadLine();
//Lambda Expression
AreaCalculator areaOfCircleCalculater = (r) => 3.14 * r * r;
double area = areaOfCircleCalculater(20);
System.Console.WriteLine($"Area of circle {area}");
//Func delegate
Func <int, double> areaOfCircleFunc = (r) => 3.14 * r * r;
double areaFunc = areaOfCircleFunc.Invoke(20);
System.Console.WriteLine($"Area of circle using Func {area}");
//Action delegate
Action <int> areaOfCircleAction = (r) =>
{
Console.WriteLine($"Area of circle using Action {3.14 * r * r}");
};
areaOfCircleAction.Invoke(20);
//Predicate delegate
Predicate <int> isAreaGreaterThanRadius = (r) => r > (3.14 * r * r);
bool isAreaGreater = isAreaGreaterThanRadius.Invoke(20);
System.Console.WriteLine($"Is Area greater than radius, {isAreaGreater}");
Console.ReadLine();
}
