MultiThread save changes

repository.cs

public void SaveChangesParallel(List<objeto> objetos)
        {
            var saveList = new List<List<objeto>>();
            var count = 0;
            while (count < objetos.Count)
            {
                var partialSaves = objetos.Skip(count).Take(250).ToList();
                count += partialSaves.Count;
                saveList.Add(partialSaves);
            }

            if (saveList.Count < 1)
            {
                throw new BadRequestException("faltam objetos");
            }
            
            Parallel.ForEach(saveList, file =>
            {
                using var context = new Context();
                context.objetos.UpdateRange(file);
                context.SaveChanges();
            });
        }