Linq. Select from multiple tables

Question

In project I have this tables:

1. Product(id,catalogId, manufacturerId...)
2. Catalog
3. Manufacturer

Also Product model

Answer 1

To combine results from multiple tables without explicitly joins:

from p in Product
from c in Catalog
from m in Manufacturer
where c.Id == p.CatalogId && m.Id == p.ManufacturerId && p.Active == 1
select new 
    { 
        p.Name,
        p.CatalogId,
        p.ManufacturerId,
        c.Name,
        m.Name 
    };