示例#1
0
        public static void initialize(BL_imp bl)
        {
            #region nanny 1 definition
            Nanny n1 = new Nanny();
            n1.Address         = "21, havaad haleumi, jerusalem, israel";
            n1.First_Name      = "Zelda P.";
            n1.Family_Name     = "Tzudkevotsky";
            n1.Birth_Date      = DateTime.Now.AddYears(-23);
            n1.Elevator_Exists = true;
            n1.Id                  = 234234564;
            n1.Hourly_Price        = 23;
            n1.Hourly_Price_Exists = true;
            n1.Max_Children        = 20;
            n1.Max_Child_Age       = 18;
            n1.Min_Child_Age       = 5;
            n1.Vacation_Like_Tamat = true;
            n1.Works_On_Day        = new bool[] { true, true, true, true, true, false, false };
            n1.Work_Hours          = new TimeSpan[2, 6] {
                { new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0) }
                , { new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0) }
            };
            n1.Experience_Years = 1;
            n1.Lang             = Language.YIDDISH;
            n1.Recommendations  = "Zelda is the Besat! We love her! from Pesha";
            n1.Telephone_Number = "058-432-1109";
            n1.Rating           = 5;
            bl.add_nanny(n1);
            #endregion

            #region nanny 2 definition
            Nanny n2 = new Nanny();
            n2.Address         = "27, Hapisga St., jerusalem, israel";
            n2.First_Name      = "Fruma Tova";
            n2.Family_Name     = "Bombalovski";
            n2.Birth_Date      = DateTime.Now.AddYears(-19).AddMonths(-5).AddDays(19);
            n2.Elevator_Exists = true;
            n2.Id                  = 312509871;
            n2.Hourly_Price        = 26;
            n2.Hourly_Price_Exists = true;
            n2.Monthly_Price       = 1400;
            n2.Max_Children        = 15;
            n2.Max_Child_Age       = 12;
            n2.Min_Child_Age       = 3;
            n2.Vacation_Like_Tamat = true;
            n2.Works_On_Day        = new bool[] { false, true, true, true, true, true, false };
            n2.Work_Hours          = new TimeSpan[2, 6] {
                { new TimeSpan(8, 30, 0), new TimeSpan(8, 30, 0), new TimeSpan(8, 30, 0), new TimeSpan(8, 30, 0), new TimeSpan(8, 30, 0), new TimeSpan(8, 30, 0) }
                , { new TimeSpan(14, 0, 0), new TimeSpan(14, 0, 0), new TimeSpan(14, 0, 0), new TimeSpan(14, 0, 0), new TimeSpan(14, 0, 0), new TimeSpan(14, 0, 0) }
            };
            n2.Experience_Years = 3;
            n2.Lang             = Language.YIDDISH;
            n2.Recommendations  = "Fruma Fruma , What we do without her! She is the #1 ganenet!";
            n2.Telephone_Number = "052-987-1908";
            n2.Rating           = 4;
            bl.add_nanny(n2);
            #endregion

            #region nanny 3 definition
            Nanny n3 = new Nanny();
            n3.Address         = "35, Nahal Dolev, Beit Shemesh, israel";
            n3.First_Name      = "Tova";
            n3.Family_Name     = "Cohen";
            n3.Birth_Date      = DateTime.Now.AddYears(-52).AddDays(100);
            n3.Elevator_Exists = false;
            n3.Id                  = 112324543;
            n3.Hourly_Price        = 32;
            n3.Monthly_Price       = 1700;
            n3.Hourly_Price_Exists = true;
            n3.Max_Children        = 26;
            n3.Max_Child_Age       = 24;
            n3.Min_Child_Age       = 10;
            n3.Vacation_Like_Tamat = false;
            n3.Works_On_Day        = new bool[] { true, true, true, true, true, true, false };
            n3.Work_Hours          = new TimeSpan[2, 6] {
                { new TimeSpan(7, 15, 0), new TimeSpan(7, 15, 0), new TimeSpan(7, 15, 0), new TimeSpan(7, 15, 0), new TimeSpan(7, 15, 0), new TimeSpan(7, 15, 0) }
                , { new TimeSpan(17, 0, 0), new TimeSpan(17, 0, 0), new TimeSpan(17, 0, 0), new TimeSpan(017, 0, 0), new TimeSpan(17, 0, 0), new TimeSpan(17, 0, 0) }
            };
            n3.Experience_Years = 31;
            n3.Lang             = Language.HEBREW;
            n3.Recommendations  = "Tova was my grandmothers ganenet, my ganent and now my daughters ganenet. She loves the children like her own. We highly recommend her!";
            n3.Telephone_Number = "02-995-1128";
            n3.Rating           = 4.7;
            bl.add_nanny(n3);
            #endregion

            #region child 1 definition
            Child c1 = new Child();
            c1.Birth_Date    = DateTime.Now.AddDays(-450);
            c1.First_Name    = "Moishy";
            c1.Id            = 311478632;
            c1.Mother_Id     = 334151678;
            c1.Special_Needs = true;
            c1.Needs         = "Is being toilet trained. needs special care!";
            bl.add_child(c1);
            #endregion

            #region child 2 definition
            Child c2 = new Child();
            c2.Birth_Date    = DateTime.Now.AddDays(-250);
            c2.First_Name    = "Shmuley";
            c2.Id            = 313486930;
            c2.Mother_Id     = 334151678;
            c2.Special_Needs = true;
            c2.Needs         = "Is jeleous of his brother who is being toilet trained. needs special care!";
            bl.add_child(c2);
            #endregion

            #region child 3 definition
            Child c3 = new Child();
            c3.Birth_Date    = DateTime.Now.AddDays(-292);
            c3.First_Name    = "Hassan";
            c3.Id            = 345908476;
            c3.Mother_Id     = 245674839;
            c3.Special_Needs = false;
            bl.add_child(c3);
            #endregion

            #region child 4 definition
            Child c4 = new Child();
            c4.Birth_Date    = DateTime.Now.AddDays(-387);
            c4.First_Name    = "Dora";
            c4.Id            = 345987610;
            c4.Mother_Id     = 142365876;
            c4.Special_Needs = false;
            bl.add_child(c4);
            #endregion

            #region child 5 definition
            Child c5 = new Child();
            c5.Birth_Date    = DateTime.Now.AddDays(-123);
            c5.First_Name    = "Shirli";
            c5.Id            = 388765612;
            c5.Mother_Id     = 339876879;
            c5.Special_Needs = true;
            c5.Needs         = "Shirli is elergic to penuts";
            bl.add_child(c5);
            #endregion

            #region child 6 definition
            Child c6 = new Child();
            c6.Birth_Date    = DateTime.Now.AddDays(-388);
            c6.First_Name    = "Sasha";
            c6.Id            = 389765429;
            c6.Mother_Id     = 339876879;
            c6.Special_Needs = false;
            bl.add_child(c6);
            #endregion

            #region child 7 definition
            Child c7 = new Child();
            c7.Birth_Date    = DateTime.Now.AddDays(-448);
            c7.First_Name    = "Problematic_kid";
            c7.Id            = 338490123;
            c7.Mother_Id     = 123412341;
            c7.Special_Needs = true;
            c7.Needs         = "I need to be watched all day!";
            bl.add_child(c7);
            #endregion

            #region mother 1 definition
            Mother m1 = new Mother();
            m1.Id                  = 334151678;
            m1.First_Name          = "Sarah";
            m1.Family_Name         = "Levi";
            m1.Home_Address        = "Nahal Refaim 38, Beit Shemesh, Israel";
            m1.Max_Travel_Distance = 10;
            m1.Needs_On_Day        = new bool[] { true, true, true, true, true, false, false };
            m1.Needs_Hours         = new TimeSpan[2, 6] {
                { new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0) }
                , { new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0) }
            };
            m1.Searching_Address = "Nahal Refaim 38, Beit Shemesh, Israel";
            m1.Telephone_Number  = "02-991-3245";
            bl.add_mother(m1);
            #endregion

            #region mother 2 definition
            Mother m2 = new Mother();
            m2.Id                  = 245674839;
            m2.First_Name          = "Shrik";
            m2.Family_Name         = "Abu Hamda";
            m2.Home_Address        = "21 Yafo St., Jerusalem, Israel";
            m2.Max_Travel_Distance = 100;
            m2.Needs_On_Day        = new bool[] { false, false, true, true, false, false, false };
            m2.Needs_Hours         = new TimeSpan[2, 6] {
                { new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(10, 0, 0), new TimeSpan(10, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0) }
                , { new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0) }
            };
            m2.Searching_Address = "21 Yafo St., Jerusalem, Israel";
            m2.Telephone_Number  = "055-253-9487";
            bl.add_mother(m2);
            #endregion

            #region mother 3 definition
            Mother m3 = new Mother();
            m3.Id                  = 142365876;
            m3.First_Name          = "Tohar";
            m3.Family_Name         = "Mizrachi";
            m3.Home_Address        = "10 Beit Hadfus, Jerusalem, Israel";
            m3.Max_Travel_Distance = 50;
            m3.Needs_On_Day        = new bool[] { false, true, true, true, true, true, false };
            m3.Needs_Hours         = new TimeSpan[2, 6] {
                { new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0) }
                , { new TimeSpan(16, 0, 0), new TimeSpan(16, 0, 0), new TimeSpan(0, 16, 0), new TimeSpan(16, 0, 0), new TimeSpan(16, 0, 0), new TimeSpan(16, 0, 0) }
            };
            m3.Searching_Address = "10 King George, Jerusalem, Israel";
            m3.Telephone_Number  = "02-553-3981";
            bl.add_mother(m3);
            #endregion

            #region mother 4 definition
            Mother m4 = new Mother();
            m4.Id                  = 123412341;
            m4.First_Name          = "Shula";
            m4.Family_Name         = "Zaken";
            m4.Home_Address        = "22 Kanfei Nesharim, Jerusalem, Israel";
            m4.Max_Travel_Distance = 100;
            m4.Needs_On_Day        = new bool[] { true, true, true, true, true, true, true };
            m4.Needs_Hours         = new TimeSpan[2, 6] {
                { new TimeSpan(0, 0, 0), new TimeSpan(0, 0, 0), new TimeSpan(0, 0, 0), new TimeSpan(0, 0, 0), new TimeSpan(0, 0, 0), new TimeSpan(0, 0, 0) }
                , { new TimeSpan(23, 59, 59), new TimeSpan(23, 59, 59), new TimeSpan(23, 59, 59), new TimeSpan(23, 59, 59), new TimeSpan(23, 59, 59), new TimeSpan(23, 59, 59) }
            };
            m4.Home_Address     = "20 Malchei Yisrael, Jerusalem, Israel";
            m4.Telephone_Number = "02-544-9475";
            bl.add_mother(m4);
            #endregion

            #region mother 4 definition
            Mother m5 = new Mother();
            m5.Id                  = 339876879;
            m5.First_Name          = "Nafta";
            m5.Family_Name         = "Shluk";
            m5.Home_Address        = "20 Malchei Yisrael, Jerusalem, Israel";
            m5.Max_Travel_Distance = 30;
            m5.Needs_On_Day        = new bool[] { true, true, true, true, true, false, false };
            m5.Needs_Hours         = new TimeSpan[2, 6] {
                { new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0), new TimeSpan(8, 0, 0) }
                , { new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0), new TimeSpan(15, 0, 0) }
            };
            m5.Home_Address     = "20 Malchei Yisrael, Jerusalem, Israel";
            m5.Telephone_Number = "02-543-0781";
            bl.add_mother(m5);
            #endregion
        }
示例#2
0
        static void Main(string[] args)
        {
            BL_imp bl = new BL_imp();

            initialize(bl);
            Console.WriteLine("\n\n\n");
            Console.WriteLine("***************************************************************************");
            Console.WriteLine("****************** WELCOME TO NANNY - CHILD MATCHER APP *******************");
            Console.WriteLine("***************************************************************************");
            Console.WriteLine("\n\n\n");

            int menuchoice = 1;

            while (menuchoice != 0)
            {
                try
                {
                    Console.WriteLine("\n" + "MENU");
                    Console.WriteLine("1. Add a nanny");
                    Console.WriteLine("2. Delete a nanny");
                    Console.WriteLine("3. Update a nanny");
                    Console.WriteLine("4. Add a mother");
                    Console.WriteLine("5. Delete a mother");
                    Console.WriteLine("6. Update a mother");
                    Console.WriteLine("7. Add a child");
                    Console.WriteLine("8. Delete a child");
                    Console.WriteLine("9. Update a child");
                    Console.WriteLine("10. Add a contract");
                    Console.WriteLine("11. Delete a contract");
                    Console.WriteLine("12. Update a contract");
                    Console.WriteLine("13. Get a list of all nannys");
                    Console.WriteLine("14. Get a list of all mothers");
                    Console.WriteLine("15. Get a list of all children");
                    Console.WriteLine("16. Get a list of all contracts");
                    Console.WriteLine("0. Exit");
                    Console.WriteLine("");

                    menuchoice = int.Parse(Console.ReadLine());
                    Console.Clear();

                    switch (menuchoice)
                    {
                    case 0:
                        break;

                    case 1:
                        Console.WriteLine("1. Add a nanny");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the new nanny data");
                        Nanny temp = new Nanny();
                        Console.WriteLine("Id: ");
                        temp.Id = int.Parse(Console.ReadLine());
                        Console.WriteLine("First Name: ");
                        temp.First_Name = Console.ReadLine();
                        Console.WriteLine("Family Name: ");
                        temp.Family_Name = Console.ReadLine();
                        Console.WriteLine("Address: ");
                        temp.Address = Console.ReadLine();
                        Console.WriteLine("Birth date: ");
                        temp.Birth_Date = Convert.ToDateTime(Console.ReadLine());
                        Console.WriteLine("Telephone Number: ");
                        temp.Telephone_Number = Console.ReadLine();
                        Console.WriteLine("Is Elevator? Enter true or false ");
                        temp.Elevator_Exists = (Console.ReadLine().ToLower() == "true");
                        Console.WriteLine("Experience years: ");
                        temp.Experience_Years = int.Parse(Console.ReadLine());
                        Console.WriteLine("Floor: ");
                        temp.floor = int.Parse(Console.ReadLine());
                        Console.WriteLine("Hourly price exists? Enter true or false ");
                        temp.Hourly_Price_Exists = (Console.ReadLine() == "true");
                        if (temp.Hourly_Price_Exists)
                        {
                            Console.WriteLine("Enter the hourly price");
                            temp.Hourly_Price = double.Parse(Console.ReadLine());
                        }
                        else
                        {
                            Console.WriteLine("Enter the monthly price");
                            temp.Monthly_Price = double.Parse(Console.ReadLine());
                        }
                        Console.WriteLine("Language: ");
                        string   language = Console.ReadLine();
                        Language l        = (Language)Enum.Parse(typeof(Language), language.ToUpper());
                        Console.WriteLine("How many children she can take?: ");
                        temp.Max_Children = int.Parse(Console.ReadLine());
                        Console.WriteLine("Maximum children age she can take: ");
                        temp.Max_Child_Age = int.Parse(Console.ReadLine());
                        Console.WriteLine("Minimum children age she can take: ");
                        temp.Min_Child_Age = int.Parse(Console.ReadLine());
                        Console.WriteLine("Recomendations: ");
                        temp.Recommendations = Console.ReadLine();

                        for (int i = 0; i < 6; i++)
                        {
                            Week w = (Week)i + 1;
                            Console.Write("Dos she works in ");
                            Console.Write(w);
                            Console.WriteLine("? Enter true or false");
                            string choice = Console.ReadLine();
                            if (choice.ToLower() == "true")
                            {
                                temp.Works_On_Day[i] = true;
                            }
                            if (choice.ToLower() == "false")
                            {
                                temp.Works_On_Day[i] = false;
                            }
                            if (temp.Works_On_Day[i])
                            {
                                Console.Write("Enter the hour she begins to work in ");
                                Console.Write(w);
                                Console.WriteLine("? Enter hh:mm");
                                temp.Work_Hours[i, 0] = TimeSpan.Parse(Console.ReadLine());
                                Console.Write("Enter the hour she finishes to work in ");
                                Console.Write(w);
                                Console.WriteLine("? Enter hh:mm");
                                temp.Work_Hours[i, 1] = TimeSpan.Parse(Console.ReadLine());
                            }
                        }
                        bl.add_nanny(temp);
                        break;

                    case 2:
                        Console.WriteLine("2. Delete a nanny");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the id of the nanny you want to delete");
                        int id = int.Parse(Console.ReadLine());
                        bl.delete_nanny(id);
                        break;

                    case 3:
                        Console.WriteLine("3. Update a nanny");
                        Console.WriteLine("");
                        UpdatingNanny(bl);
                        break;

                    case 4:
                        Console.WriteLine("4. Add a mother");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the new mother data");
                        Mother addMother = new Mother();
                        Console.WriteLine("Id: ");
                        addMother.Id = int.Parse(Console.ReadLine());
                        Console.WriteLine("First Name: ");
                        addMother.First_Name = Console.ReadLine();
                        Console.WriteLine("Family Name: ");
                        addMother.Family_Name = Console.ReadLine();
                        Console.WriteLine("Home Address: ");
                        addMother.Home_Address = Console.ReadLine();
                        Console.WriteLine("Second Address: ");
                        addMother.Second_Address = Console.ReadLine();
                        Console.WriteLine("Max travel distance: ");
                        addMother.Max_Travel_Distance = (int)double.Parse(Console.ReadLine());
                        Console.WriteLine("Telephone Number: ");
                        addMother.Telephone_Number = Console.ReadLine();

                        for (int i = 0; i < 6; i++)
                        {
                            Week w = (Week)i + 1;
                            Console.Write("Dos she needs in ");
                            Console.Write(w);
                            Console.WriteLine("? Enter true or false");
                            string s = Console.ReadLine();
                            if ((s.ToLower() == "true"))
                            {
                                addMother.Needs_On_Day[i] = true;
                            }
                            else
                            {
                                addMother.Needs_On_Day[i] = false;
                            }
                            if (addMother.Needs_On_Day[i])
                            {
                                Console.Write("Enter the hour she brings the child in ");
                                Console.Write(w);
                                Console.WriteLine("? Enter hh:mm");
                                addMother.Needs_Hours[i, 0] = TimeSpan.Parse(Console.ReadLine());
                                Console.Write("Enter the hour she takes the child in ");
                                Console.Write(w);
                                Console.WriteLine("? Enter hh:mm");
                                addMother.Needs_Hours[i, 1] = TimeSpan.Parse(Console.ReadLine());
                            }
                        }

                        bl.add_mother(addMother);

                        break;

                    case 5:

                        Console.WriteLine("5. Delete a mother");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the id of the mother you want to delete");
                        int idMother = int.Parse(Console.ReadLine());
                        bl.delete_mother(idMother);
                        break;

                    case 6:
                        Console.WriteLine("6. Update a mother");
                        Console.WriteLine("");
                        UpdatingMother(bl);
                        break;

                    case 7:
                        Console.WriteLine("7. Add a child");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the new child data");

                        Child addChild = new Child();
                        Console.WriteLine("Id: ");
                        addChild.Id = int.Parse(Console.ReadLine());
                        Console.WriteLine("Mother id: ");
                        addChild.Mother_Id = int.Parse(Console.ReadLine());
                        Console.WriteLine("First Name: ");
                        addChild.First_Name = Console.ReadLine();
                        Console.WriteLine("Birth date: ");
                        addChild.Birth_Date = Convert.ToDateTime(Console.ReadLine());
                        Console.WriteLine("Does the child need special needs? Enter true or false ");
                        string b = Console.ReadLine().ToLower();
                        if (b == "true")
                        {
                            addChild.Special_Needs = true;
                        }
                        else
                        {
                            addChild.Special_Needs = false;
                        }
                        if (addChild.Special_Needs)
                        {
                            Console.WriteLine("What is the child's special needs? ");
                            addChild.Needs = Console.ReadLine();
                        }


                        bl.add_child(addChild);
                        break;

                    case 8:
                        Console.WriteLine("8. Delete a child");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the id of the child you want to delete");
                        int idChild = int.Parse(Console.ReadLine());
                        bl.delete_child(idChild);
                        break;

                    case 9:
                        Console.WriteLine("9. Update a child");
                        Console.WriteLine("");
                        UpdatingChild(bl);
                        break;

                    case 10:
                        Console.WriteLine("10. Add a contract");
                        Console.WriteLine("");
                        AddContract(bl);
                        break;

                    case 11:
                        Console.WriteLine("11. Delete a contract");
                        Console.WriteLine("");
                        Console.WriteLine("Enter the id of the contract you want to delete");
                        int idContract = int.Parse(Console.ReadLine());
                        bl.delete_contract(idContract);
                        break;

                    case 12:
                        Console.WriteLine("12. Update a contract");
                        Console.WriteLine("");
                        UpdatingContract(bl);
                        break;

                    case 13:
                        Console.WriteLine("13. Get a list of all nannys");
                        Console.WriteLine("");
                        List <Nanny> all_nannys = new List <Nanny>();
                        all_nannys = bl.get_nanny_list();
                        if (all_nannys.Count != 0)
                        {
                            foreach (Nanny n in all_nannys)
                            {
                                string print = n.ToString();
                                Console.WriteLine(print);
                            }
                        }
                        else
                        {
                            Console.WriteLine("There are no nannys registered.");
                        }
                        break;

                    case 14:
                        Console.WriteLine("14. Get a list of all mothers");
                        Console.WriteLine("");
                        List <Mother> all_mothers = new List <Mother>();
                        all_mothers = bl.get_mother_list();
                        if (all_mothers.Count != 0)
                        {
                            foreach (Mother m in all_mothers)
                            {
                                Console.WriteLine(m.ToString());
                            }
                        }
                        else
                        {
                            Console.WriteLine("There are no mothers registered.");
                        }
                        break;

                    case 15:
                        Console.WriteLine("15. Get a list of all children");
                        Console.WriteLine("");
                        List <Child> all_children = new List <Child>();
                        all_children = bl.get_child_list();
                        if (all_children.Count != 0)
                        {
                            foreach (Child c in all_children)
                            {
                                Console.WriteLine(c.ToString());
                            }
                        }
                        else
                        {
                            Console.WriteLine("There are no children registered.");
                        }
                        break;

                    case 16:
                        Console.WriteLine("16. Get a list of all contracts");
                        Console.WriteLine("");
                        List <Contract> all_contracts = new List <Contract>();
                        all_contracts = bl.get_contract_list();
                        if (all_contracts.Count != 0)
                        {
                            foreach (Contract c in all_contracts)
                            {
                                Console.WriteLine(c.ToString());
                            }
                        }
                        else
                        {
                            Console.WriteLine("There are no contracts registered.");
                        }
                        break;

                    default:
                        Console.WriteLine("Sorry, invalid selection!");
                        break;
                    }
                }
                catch (Exception exception)
                {
                    Console.WriteLine("\nError: " + exception.Message + "\nTry again...\n");
                }
            }
        }