static void Main(string[] args) { /* UC6:- Refactor to add multiple Address Book to the System. * Each Address Book has a unique Name * - Use Console to add new Address Book * - Maintain Dictionary of Address Book Name to Address Book */ Console.WriteLine("**** Welcome To Address Book System ****"); AddressBookDetails addressBookDetails = AddressBookDetails.ReadFromFile(); bool flag = true; while (flag) { Console.Write("\n1.Add Address Book System" + "\n2.Show Address Book System Name" + "\n3.Delete Address Book" + "\n4.Search Person in City or State " + "\n5.Show all Record in City or State" + "\n6.Count of Record City or State" + "\n7.Exit\nEnter Your Choice: - "); int choice = Convert.ToInt32(Console.ReadLine()); switch (choice) { case 1: addressBookDetails.AddAddressBook(); // add new Address book break; case 2: addressBookDetails.ViewAllAddressBooks(); //view all address book names break; case 3: addressBookDetails.DeleteAddressBook(); //delete an address book break; case 4: try { /* UC8:- Ability to search Person in a City or State across the multiple AddressBook * - Search Result can show multiple person in the city or state */ Console.Write("1.City\n2.State\nEnter Choice:-"); //print int choice2 = Convert.ToInt32(Console.ReadLine()); //take input and convert int32 if (choice2 == 1) //check condition { addressBookDetails.SearchInCity(); //search city } else if (choice2 == 2) { addressBookDetails.SearchInState();//search State } } catch (Exception ex) { Console.WriteLine(ex.Message); } break; case 5: try { /* UC8:- Ability to search Person in a City or State across the multiple AddressBook * - Search Result can show multiple person in the city or state */ Console.Write("1.City\n2.State\nEnter Choice:-"); //print int choice3 = Convert.ToInt32(Console.ReadLine()); //take input and convert int32 if (choice3 == 1) { addressBookDetails.ViewAllByCity(); // view all contact in a city } else if (choice3 == 2) { addressBookDetails.ViewAllByState(); // view all contact in a State } } catch (Exception ex) { Console.WriteLine(ex.Message); } break; case 6: try { /* UC10:- Ability to get number of contact persons i.e. count by City or State. * - Search Result will show count by city and by state. */ Console.Write("1.City\n2.State\nEnter Choice:-"); //print int choice4 = Convert.ToInt32(Console.ReadLine()); //take input and convert int32 if (choice4 == 1) { addressBookDetails.CountAllByCity(); //get count of contacts in City } else if (choice4 == 2) { addressBookDetails.CountAllByState(); //get count of contacts in state } } catch (Exception ex) { Console.WriteLine(ex.Message); } break; case 7: flag = false; break; default: Console.WriteLine("Please Enter Valid Option"); break; } } // UC 13 Writing to the previously stored records. addressBookDetails.WriteToFile(); }