internal static void SearchPage(int MenuIndex)
        {
            Console.Clear();
            Console.WriteLine("Choose the way of searching:\n" +
                              "\n1.By phone number" +
                              "\n2.By email" +
                              "\n3.By country\n");

            int.TryParse(Console.ReadLine(), out MenuIndex);

            switch (MenuIndex)
            {
            case 1:
                Console.Clear();
                Console.WriteLine("Enter user's phone number:\n");

                var               number  = Console.ReadLine();
                UserDTO           user    = null;
                List <AddressDTO> address = null;

                try
                {
                    user    = users.GetByNumber(number);
                    address = addresses.GetByUserId(user.UserId);
                }
                catch (NullReferenceException)
                {
                    Console.WriteLine("\nAn error occured. User with this number does not exist.");
                    DefaultNavigation(MenuIndex);

                    return;
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"\nAn error occured.\n{ex.Message}");
                    DefaultNavigation(MenuIndex);

                    return;
                }

                OutputHelper.OutputUserTableData();
                OutputHelper.OutputUser(user, address.FirstOrDefault());
                OutputHelper.OutputUnderline();

                ChangeUserStatus(out MenuIndex);

                switch (MenuIndex)
                {
                case 2:
                    if (OutputHelper.IsActivated)
                    {
                        OutputHelper.OutputActivationInfo(user, users, activatingData);

                        break;
                    }

                    OutputHelper.ActivationConfirmation(user, users, activatingData);

                    break;

                case 3:
                    if (OutputHelper.IsBlocked)
                    {
                        OutputHelper.OutputBlockingInfo(user, users, blockingData);

                        break;
                    }

                    OutputHelper.BlockingConfirmation(user, users, blockingData);

                    break;

                case 4:
                    OutputHelper.OutputUserAddresses(user, addresses);

                    break;
                }

                DefaultNavigation(MenuIndex);

                break;

            case 2:
                Console.Clear();
                Console.WriteLine("Enter user's email:\n");

                var email = Console.ReadLine();

                try
                {
                    user    = users.GetByEmail(email);
                    address = addresses.GetByUserId(user.UserId);
                }
                catch (NullReferenceException)
                {
                    Console.WriteLine("\nAn error occured. User with this email does not exist.");
                    DefaultNavigation(MenuIndex);

                    return;
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"An error occured.\n{ex.Message}");
                    DefaultNavigation(MenuIndex);

                    return;
                }

                OutputHelper.OutputUserTableData();
                OutputHelper.OutputUser(user, address.FirstOrDefault());
                OutputHelper.OutputUnderline();

                ChangeUserStatus(out MenuIndex);

                switch (MenuIndex)
                {
                case 2:
                    if (OutputHelper.IsActivated)
                    {
                        OutputHelper.OutputActivationInfo(user, users, activatingData);

                        break;
                    }

                    OutputHelper.ActivationConfirmation(user, users, activatingData);

                    break;

                case 3:
                    if (OutputHelper.IsBlocked)
                    {
                        OutputHelper.OutputBlockingInfo(user, users, blockingData);

                        break;
                    }

                    OutputHelper.BlockingConfirmation(user, users, blockingData);

                    break;

                case 4:
                    OutputHelper.OutputUserAddresses(user, addresses);

                    break;
                }

                DefaultNavigation(MenuIndex);

                break;

            case 3:
                Console.Clear();
                Console.WriteLine("Enter country:\n");

                var country            = Console.ReadLine();
                List <AddressDTO> adrs = null;

                try
                {
                    adrs = addresses.GetByCountry(country);
                }
                catch (NullReferenceException)
                {
                    Console.WriteLine("\nNo users were found with this address.");
                    DefaultNavigation(MenuIndex);

                    return;
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"An error occurred.\n{ex.Message}");
                    DefaultNavigation(MenuIndex);

                    return;
                }

                List <UserDTO> usrs = new List <UserDTO>();

                OutputHelper.OutputUserTableData();

                foreach (var u in adrs)
                {
                    user = users.GetById(u.UserId);
                    var userAdr = user.tblAddresses.Where(uu => uu.UserId == user.UserId);
                    usrs.Add(users.GetById(u.UserId));

                    Console.WriteLine($" {user.FirstName} {user.LastName}".PadRight(20) +
                                      $"| {user.PhoneNumber}".PadRight(15) + $"| {user.Email}".PadRight(30) +
                                      $"| {(user.DateOfBirth != null ? "" + $"{user.DateOfBirth.Value.Day}.{user.DateOfBirth.Value.Month}.{user.DateOfBirth.Value.Year}" : "-")}".PadRight(15) +
                                      $"| {(user.IsFemale != null ? (user.IsFemale == null ? "Female" : "Male") : "-")}".PadRight(9) +
                                      $"| {$"{u.City}, {u.Country}, {u.HouseNumber} {u.Street}"}".PadRight(40) +
                                      $"| {(user.IsAdmin == true ? "Admin" : "User")}".PadRight(11) +
                                      $"| {(user.IsActivated == true ? "Activated" : "Not activated")}".PadRight(17) +
                                      $"| {(user.IsBlocked == true ? "Blocked" : "Not blocked")}".PadRight(15) +
                                      $"| {(user.FirstName == "Anna" && user.LastName == "Bagriy" ? " (you)" : "")}");
                }

                OutputHelper.OutputUnderline();

                DefaultNavigation(MenuIndex);

                break;

            default:
                OutputHelper.OutputError();

                DefaultNavigation(MenuIndex);

                break;
            }
        }