// /Home/Index.cshtml contains a link to /Title/<titleId>
// Clicking on the link gives an HTTP 404 error
// URL: http://localhost:50359/Title/1/

public class TitleController : BaseController
{
    // GET: Title
    public ActionResult Index(int TitleId)
    {
        // load the DbContext
        ForumEntities Db = new ForumEntities();

        // get a list of Threads for the selected Title
        List<Thread> DbThreads = new List<Thread>();
        DbThreads = Db.Threads.Where(x => x.Id == TitleId && x.Deleted == false).ToList();

        // build a ViewModel for each thread and add it to a list
        List<ThreadViewModel> Threads = new List<ThreadViewModel>();
        foreach (Thread Thread in DbThreads)
        {
            Threads.Add(new ThreadViewModel
            {
                Author = Db.Users.FirstOrDefault(x => x.Id == Thread.UserId).Username,
                Id = Thread.Id,
                Date = Thread.CreatedOn,
                Name = Thread.Name,
                PostCount = Db.Posts.Where(x => x.ThreadId == Thread.Id && x.Deleted == false).Count()
            });
        }

        // build the ViewModel for this particular view which contains the requested threads
        ListThreadsViewModel ThreadList = new ListThreadsViewModel
        {
            TitleName = Db.Titles.FirstOrDefault(x => x.Id == TitleId).Name,
            Threads = Threads
        };

        return View(ThreadList);
    }
}