static void Main(string[] args)
{
#region Singleton
UserState user = UserState.GetSingleton();
user.LoginName = "imanizadeh.me";
user.Age = 28;
UserState user2 = UserState.GetSingleton();
Console.WriteLine(user2.LoginName);
Console.WriteLine(user2.Age);
Console.WriteLine(user == user2);
#endregion
Console.ReadKey();
}