How to set up a "Details" page when parsing from XML file in MVC.NET

I have an MVC VS2013 project querying an XML document.

The index action on my controller returns a list of Restaurants, and I need to be able to click the individual restaurants and open a details page which will show the respective properties of that Restaurant.

In previous projects querying from a sql database I would just call the db context, for example

Restaurant restaurant = db.Restaurants.Find(id);

but I am uncertain what the XML querying equivalent is.

Here is what I have so far.

Model:

        [XmlRoot("EstablishmentCollection")]
        public class Restaurant
        {
        [Key]
        [XmlElement("FHRSID")]
        public int? FHRSID { get; set; }
        [XmlElement("BusinessName")]
        public string BusinessName { get; set; }
        [XmlElement("RatingValue")]
        public int? RatingValue { get; set; }
        [XmlElement("Hygiene")]
        public int? HygieneScore { get; set; }
 }

Controller:

  public ActionResult Index()
    { 
        IQueryable<Restaurant> Res = null;

        try
        {
            var qy = xmlDoc.Descendants("EstablishmentDetail").Select(n => new  Restaurant()
            {
                FHRSID = (int)n.Element("FHRSID"),
                BusinessName = n.Element("BusinessName").Value,
                RatingValue = RValue(n),
                HygieneScore = HScores(n)
            });

            Res = qy.AsQueryable();
            }
        catch (Exception ex)
        {
            string message;
            message = ex.Message.ToString();
            return View(message);
        }
        return View(Res);
       }


        public ActionResult Details (int? id)
       {
        try
        {
            var qy = xmlDoc.Descendants("EstablishmentDetail").Select(n => new Restaurant()
            {
                FHRSID = (int)n.Element("FHRSID"),
                BusinessName = n.Element("BusinessName").Value,
                RatingValue = RValue(n),
                HygieneScore = HScores(n)
             });

           //What goes here???

         }
         catch (Exception ex)
        {
            string message;
            message = ex.Message.ToString();
            return View(message);
        }




        return View();
    }

Details View:

 @model WebApplication3.Models.Restaurant


 <h2>Details</h2>
 <h6>@Model.FHRSID</h6>
 <h6>@Model.BusinessName</h6>
 <h6>@Model.HygieneScore</h6>
 <h6>@Model.RatingValue</h6>

Still a bit new to programming, so any help would be appreciated!