Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Luke Walz
Luke Walz
5,271 Points

Can't figure out Challenge Task 1

I tried

foreach (var vg in VideoGame)
{
return vg;
}

as well but I keep getting syntax errors.

VideoGamesRepository.cs 
using Treehouse.Models;

namespace Treehouse.Data
{
    public class VideoGamesRepository
    {
        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 + ")";
            }
        }
    }
}

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

:point_right: It looks like you're missing a few bits yet.

First, you need to create a public method like you did for GetVideoGames. Then, inside the method you may want to use a loop to look through the list of games, but you should use _videoGames as the source.

Also, your loop above just returns the very first object, but you really need to check each one to see if the Id field matches the id passed in as an argument. Only when you find a match will you then return the object.

Luke Walz
Luke Walz
5,271 Points

The instructions say I am not to use any parameters. What is the difference between a parameter here and an argument.

        public VideoGame[] GetVideoGames()
        {
            foreach (var vg in _videoGames)
            {
                return vg;
            }
        }
James Churchill
STAFF
James Churchill
Treehouse Teacher
James Churchill
James Churchill
Treehouse Teacher

Luke,

I'm confused by your original post. Are you trying to solve task 1 or 2 of the code challenge? You say your stuck on task 1, but the code that you posted for the VideoGamesRepository.cs file contains the correct solution for task 1.

Regarding your question about the difference between a "parameter" and an "argument"...

Given the following code:

public void Test(string name)
{
}

Test("John Smith");

name is a parameter and the value that we pass to the method, "John Smith", is the argument.

Thanks, James