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

Aftab Bashir
Aftab Bashir
1,830 Points
Posted by Aftab Bashir
Aftab Bashir
1,830 Points

How can I return a private static field in a public method?

Cannot implicitly convert type Treehouse.Models.VideoGame[]' to Treehouse.Models.VideoGame' Compilation failed: 1 error(s), 0 warnings

VideoGamesRepository.cs 
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
            }
        };
    }
}
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 + ")";
            }
        }
    }
}

3 Answers

Severin Haselmann
Severin Haselmann
24,517 Points

ok. You were close at start but here is the code to get the challenge complete:

using Treehouse.Models;

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

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

        }


        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
            }
        };
    }
}
Aftab Bashir
Aftab Bashir
1,830 Points
Aftab Bashir
Aftab Bashir
1,830 Points

you know what I tried it after asking for your help and I almost had it.. and this time I was just adding VideoGame[] instead of VideoGame. Thanks for your help. :)

Severin Haselmann
Severin Haselmann
24,517 Points
Severin Haselmann
Severin Haselmann
24,517 Points

You forgot the brackets . HINT: Check where _videoGames comes from ; )

Aftab Bashir
Aftab Bashir
1,830 Points
Aftab Bashir
Aftab Bashir
1,830 Points

well adding brackets work but in the next task I'm having another error. The Task 2 is: The GetVideoGame method should accept an id parameter of type int. The GetVideoGame method should return the VideoGame object instance from the _videoGames private static field array of VideoGame objects whose Id property matches the provided id parameter value.

after doing this it says Task 1 is no longer passing :( Am I forgetting something again! 

    public VideoGame[] GetVideoGame(int id)
    {
        VideoGame videoGameToReturn = null;
        foreach (var videoGame in _videoGames)
        {
            if (videoGame.Id == id)
            {
                videoGameToReturn = videoGame;

                break;
            }
        }
        return _videoGames;
    }
Severin Haselmann
Severin Haselmann
24,517 Points
Severin Haselmann
Severin Haselmann
24,517 Points

I basically did the same thing and I posted it here : https://teamtreehouse.com/community/repository-code-challenge-2 Just read Steven Parker's explanation ; )

Notice that there are 2 comments where you should add the methods. They have slightly different names

Aftab Bashir
Aftab Bashir
1,830 Points
Aftab Bashir
Aftab Bashir
1,830 Points

didn't get it that much .. help me out

    public VideoGame[] GetVideoGames()
    {
        return _videoGames; 
    }

    public VideoGame[] GetVideoGame(int id)
    {   
        return _videoGames;
    }

Error: Does VideoGamesRepository.GetVideoGame return VideoGame?