public static void ShowMediator()
{
var mediator = new SimpleMediator();
var normalUser = new NormalUser(mediator);
var premiumUser = new PremiumUser(mediator);
mediator.AddUser(normalUser);
mediator.AddUser(premiumUser);
normalUser.ChangeSubscription();
}
/// <summary>
/// Mediators this instance.
/// </summary>
public void Mediator()
{
////creating the object of ChatMediator class
IChatMediator chatMediator = new ChatMediator();
////create users and add them to chat mediator's user list
IUser paramesh = new BasicUser(chatMediator, "paramesh");
IUser manju = new PremiumUser(chatMediator, "manju");
IUser karan = new PremiumUser(chatMediator, "karan");
chatMediator.AddUser(paramesh);
chatMediator.AddUser(manju);
chatMediator.AddUser(karan);
//// send message
karan.SendMessage("Hello Everyone!");
Console.WriteLine("===============================================");
paramesh.SendMessage("hiii");
Console.ReadLine();
}