C# (CSharp) Person.ELeft Exemples

Exemple #1

 public void AddUser(Person user)
 {
     if (user != null)
     {
         Come?.Invoke(user, user.Arrival);
     }
     Come += user.SayHi;
     Left += user.SayGoodbye;
 }

Exemple #2

 public void LeftUser(Person user)
 {
     Come -= user.SayHi;
     Left -= user.SayGoodbye;
     if (user != null)
     {
         Left?.Invoke(user);
     }
 }