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Kevin Huang
Kevin Huang
5,806 Points

Address book challange, please review my code , any bad practice I have done in my code and suggestions?

https://github.com/yizhouh/addressbook Please let me know the bad practice I have done in my code here. I havent add any exception handle in this program, since I couldnt define any exception could be done.

1 Answer

Allan Clark
Allan Clark
10,810 Points

The main thing here that could be considered bad practice is having so much of your code in the Main() method of the program. Generally we want the main method to be as small and simple as possible. To accomplish this I would suggest adding 2 classes. AddressBook (to manage all interactions with the list of AddressBookEntries) and UserInterface (to handle all the calls to Console.ReadLine/WriteLine).


  • List<AddressBookEntry> (this shouldn't be static in this context since anytime you new up an Addressbook you would want a new list as well)
  • Search() and Add() methods should be here


  • Greeting() prints greeting and options
  • ProcessUserInput() the case switch to call other functions
  • possibly have the Addressbook you are working on reside here as a property

Bonus Points if you can override the ToString method on AddressBookEntry to keep from having to repeat this line:

Console.WriteLine("Name: {0},  Phone number: {1},  Email: {2}", item.FirstName + " " + item.LastName, item.PhoneNumber, item.EmailAddress);

These are just my initial thoughts with giving the code a once over. Not sure how far along you are or even what course so some of this you may not have gone over yet. If you have any questions feel free to ask :)

Hope this helps, Happy Coding!!