LINQ query error on Inner Join

Question

In my ASP.NET Core app, I'm getting the following error on the following query:

Error CS0119 : 'products' is a type, which is not valid in the given context

NOTE: The above error is on the line join prod in products on..... of the following query

LINQ Query :

using System.Linq;
    var innerJoinQuery =
        from category in categories
        join prod in products on category.ID equals prod.ID
        select new { ProductName = prod.Name, Category = category.Name };

category :

public class category
    {
        [Key]
        public int ID { get; set; }
        public string Name { get; set; }
        public string categoryNumber { get; set; }
    }

product :

public class product
    {
        [Key]
        public int ID { get; set; }
        public string Name { get; set; }
        public string productNumber { get; set; }
    }

NOTE : This is a code first application that has the above model classes among others.

Answer 1

var db = new ProjNameDbContext();
var innerJoinQuery =
    from category in db.categories
    join prod in db.products on category.ID equals prod.CategoryID
    select new { ProductName = prod.Name, Category = category.Name };