How do I map a list of objects to return a specific property in my ASP.NET API application?

Question

I've made a basic Web API and I'm working on a list of games and their platforms. When I hit my API endpoint with postman, I see the following information.

[
    { 
        Title: "God of War, 
        Platform: "Xbox"
    },
    { 
        Title: "Grand Theft Auto", 
        Platform: "Xbox"
    }
]

However, I don't need to return the platform from my API, only the title. So the array should look like this when my API endpoint is hit:

[ 
    "God of War", 
    "Grand Theft Auto" 
]

If this was JavaScript then you could easily map this but with C# I'm not sure how. Below is my code starting with the controller:

[HttpGet]
[Route("/v1/api/games")]
public IEnumerable<Games> GetGames()
{
    List<Games> games = new()
    {
        new Games
        {
            Title = "Hunted",
            IsPrimary = false
        },
        new Games
        {
            Title = "Grand Theft Auto",
            IsPrimary = false
        }
    };

    //var test = games.Select(x => x.Title).ToArray(); Doesn't seem to work
       
    return games;
}

The model:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace MyProject
{
    public class Games
    {
        public string Title { get; set; }
        public bool? IsPrimary { get; set; }
    }
}

My question is, how can I map my list to return only the titles in the way I've shown?

Answer 1

You can simply change your method signature to

IEnumerable<string> GetGames()

and return

games.Select(x => x.Title);

Or mark the Platform property on Game class with attribute [Ignore] if you want to ignore it completely in your overall application.