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C# ASP.NET MVC Basics Modeling and Presenting Data Adding Repository Methods

Posted by Severin Haselmann
Severin Haselmann
24,517 Points

Repository code Challenge 2

Can someone help explain the logic of this exercise? I cant seem to return the same type.

VideoGamesRepository.cs 
using Treehouse.Models;

namespace Treehouse.Data
{
    public class VideoGamesRepository
    {
        // TODO Add GetVideoGames method
        public VideoGame[] GetVideoGames(int id)
        {   
            VideoGame[] videoToReturn= null;

            foreach (var videoGame in _videoGames)    
            {
                if (videoGame.Id == id)
                {
                    videoToReturn = videoGame;
                    break;
                }
            }
            return videoToReturn;

        }
        // TODO Add GetVideoGame method

        private static VideoGame[] _videoGames = new VideoGame[]
        {
            new VideoGame()
            {
                Id = 1,
                Title = "Super Mario 64",
                Description = "Super Mario 64 is a 1996 platform video game developed and published by Nintendo for the Nintendo 64.",
                Characters = new string[]
                {
                    "Mario",
                    "Princess Peach",
                    "Bowser",
                    "Toad",
                    "Yoshi"
                },
                Publisher = "Nintendo",
                Favorite = true
            },
            new VideoGame()
            {
                Id = 2,
                Title = "Mario Kart 64",
                Description = "Mario Kart 64 is a 1996 go-kart racing game developed and published by Nintendo for the Nintendo 64 video game console.",
                Characters = new string[]
                {
                    "Mario",
                    "Princess Peach",
                    "Bowser",
                    "Toad",
                    "Yoshi"
                },
                Publisher = "Nintendo",
                Favorite = false
            }
        };
    }
}
VideoGame.cs 
namespace Treehouse.Models
{
    // Don't make any changes to this class!
    public class VideoGame
    {
        public int Id { get; set; }
        public string Title { get; set; }
        public string Description { get; set; }
        public string[] Characters { get; set; }
        public string Publisher { get; set; }
        public bool Favorite { get; set; }

        public string DisplayText
        {
            get
            {
                return Title + " (" + Publisher + ")";
            }
        }
    }
}

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

You put a lot of code in there, but what the challenge asked for is way simpler. Remember, the challenge gave you two objectives:

  1. The GetVideoGames method shouldn't accept any parameters. — but you wrote it to accept an int named "id".
  2. The GetVideoGames method should return the _videoGames private static field. — but you wrote code to search for and return a specific item.

Your code looks a good deal like what will be needed for task 2. Did you perhaps overwrite your task 1 function with the code for task 2? The task 2 function should be added to the class below the one created for task 1 (and the name is slightly different).

Severin Haselmann
Severin Haselmann
24,517 Points

Oh my....Didnt realize I need to add another method -.- . Thanks again Steven!

Saula Sautia
Saula Sautia
1,634 Points
Saula Sautia
Saula Sautia
1,634 Points

Hi Steve,

Please what does the "return the _videoGames private static field" means?

Noah Yasskin
Noah Yasskin
23,947 Points
Noah Yasskin
Noah Yasskin
23,947 Points 
using Treehouse.Models;

namespace Treehouse.Data
{
    public class VideoGamesRepository
    {
        // TODO Add GetVideoGames method
        public VideoGame[] GetVideoGames()
        {                        
            return _videoGames;
        }

        // TODO Add GetVideoGame method

        private static VideoGame[] _videoGames = new VideoGame[]
        {
            new VideoGame()
            {
                Id = 1,
                Title = "Super Mario 64",
                Description = "Super Mario 64 is a 1996 platform video game developed and published by Nintendo for the Nintendo 64.",
                Characters = new string[]
                {
                    "Mario",
                    "Princess Peach",
                    "Bowser",
                    "Toad",
                    "Yoshi"
                },
                Publisher = "Nintendo",
                Favorite = true
            },
            new VideoGame()
            {
                Id = 2,
                Title = "Mario Kart 64",
                Description = "Mario Kart 64 is a 1996 go-kart racing game developed and published by Nintendo for the Nintendo 64 video game console.",
                Characters = new string[]
                {
                    "Mario",
                    "Princess Peach",
                    "Bowser",
                    "Toad",
                    "Yoshi"
                },
                Publisher = "Nintendo",
                Favorite = false
            }
        };
    }
}