public static void CreateAndRaiseV2()
{
Pub2 p = new Pub2();
p.OnChange += (sender, e)
=> Console.WriteLine($"Event raised: {e.Value}");
p.Raise();
}
private void UsingEventHandlerDelegateWithEvent()
{
Console.WriteLine("Using Event Handler delegate instead of Action");
Console.WriteLine("Event handler by default takes a sender object and some event arguments");
Pub2 pub = new Pub2();
pub.onChange += (sender, e) => Console.WriteLine("1st Event raised: {0} by :{1}", e, sender);
pub.onChange += (sender, e) => Console.WriteLine("2nd Event raised: {0} by :{1}", e, sender);
pub.Raise();
}
public void CreateAndRaise2()
{
Pub2 p2 = new Pub2();
p2.OnChange += () => Console.WriteLine("Event raised to method 1");
p2.OnChange += () => Console.WriteLine("Event raised to method 2");
//p2.OnChange = () => Console.WriteLine("Accidently removed subscriptions of methods 1 & 2"); // Accidently have used assignment operator. **But** prevented when use Event keyword.
p2.Raise();
// The Pub class is unaware of any subscribers, it just raises the event.
// If no subscribers to an event, the OnChange property would be null.
}
private void UsingEventHandlerDelegateWithEvent()
{
Console.WriteLine("Using Event Handler delegate instead of Action");
Console.WriteLine("Event handler by default takes a sender object and some event arguments");
Pub2 pub = new Pub2();
pub.onChange += (sender, e) => Console.WriteLine("1st Event raised: {0} by :{1}", e, sender);
pub.onChange += (sender, e) => Console.WriteLine("2nd Event raised: {0} by :{1}", e, sender);
pub.Raise();
}
