Converting simple Sql query to Linq

Question

Im working on my school project and im new in writing LINQ query's so its hard for me to convert this SQL query to LINQ. I have problem with writing linq query for top 10 best selling products. I have table for Products and table for Selling item.

My SQL query works good.

I tried with this:

  List<Proizvodi> proizvodi = db.Proizvodi.
            OrderByDescending(x => db.IzlazStavke.Where(y => y.ProizvodID == x.ProizvodID).
            Sum(t => t.Cijena)).Take(10).ToList();

But result is not good, any help please.

Answer 1

I'll try something like this:

List<Proizvodi> proizvodi = db.Proizvodi
        .OrderByDescending(x => db.IzlazStavke
             .Where(y => y.ProizvodID == x.ProizvodID)
             .GroupBy(a=>a.ProizvodID)
             .Select(grp=>grp.Sum(z=>z.Kolicina))
        .Take(10)
        .ToList();