Linq To Sql and identity_insert

Question

I am trying to do record inserts on a table where the Primary Key is an Identity field.

I have tried calling
mycontext.ExecuteCommand("S

Answer 1

just simple reseed identity key (with custom id) every time you add new record, eg:

    using (var desDb = new DesDbContext())
    {
        // del-table-all --------------------------------------------------------
        desDb.Database.ExecuteSqlCommand("DELETE FROM [Products]");

        foreach (var desItem in desList) //desList is List of Product
        {
            // reseed identity key
            desDb.Database.ExecuteSqlCommand("DBCC CHECKIDENT('Products', RESEED," 
                + (desItem.ProductID - 1) + ");");

            // and record
            desDb.Products.Add(desItem);                        

            // save-db                    
            desDb.SaveChanges();

        }
    }