ASP.NET MVC problem med att hämta specifika produkter ifrån en kategori

public ActionResult Browse(string category)
        {       
            var categoryModel = db.Category.Include("Product")
                .Single(c => c.CategoryType == category);

            return View(categoryModel);
        }

@model OnlineStore.Models.Category

@{
    ViewBag.Title = "Browse";
}

<h2>Browsing Category: @Model.CategoryType</h2>
<ul>
    @foreach (var product in Model.Product)
    {
        <li>
            @product.Title
        </li>
    }
</ul>

@model IEnumerable<OnlineStore.Models.Category>

@{
    ViewBag.Title = "Index";
}

<h2>Store</h2>

<ul>
    @foreach (var category in Model)
    {
        <li>
            @Html.ActionLink(category.CategoryType, "Browse", new { category.CategoryType })
        </li>
    }
</ul>

namespace OnlineStore.Models
{
    [MetadataType(typeof(Metadata_Product))]
    public partial class Product
    {
        
        public class Metadata_Product
        {
            public int ProductID { get; set; }
            public int CategoryID { get; set; }
            public int MakerID { get; set; }
            [Display(Name="Namn")]
            public string Title { get; set; }
            [Display(Name = "Pris")]
            public decimal Price { get; set; }
            [Display(Name = "Beskrivning")]
            public string Description { get; set; }

            public virtual Category Category { get; set; }
            public virtual Manufacturer Manufacturer { get; set; }
        }
    }
}

namespace OnlineStore.Models
{
    [MetadataType(typeof(Metadata_Category))]
    public partial class Category
    {
        

        public  class Metadata_Category
        {
            public int CategoryID { get; set; }
            [Display(Name = "Kategori")]
            public string CategoryType { get; set; }

            public virtual ICollection<Product> Product { get; set; }
        }
    }
}