void Load_all()
{
FileProduct file = new FileProduct();
if (file.Total_number_records() != 0)
{
file = new FileProduct("Book");
IEnumerable <Product> rez = file.Load_all();
LoadAllItem?.Invoke(rez);
file = new FileProduct("AddProducts");
Product[] mass = file.Load_all();
if (mass != null)
{
Product[] massMagazine = new Product[mass.Length];
Product[] massСhancellery = new Product[mass.Length];
for (int i = 0; i < mass.Length; i++)
{
if (mass[i] is Magazine)
{
massMagazine[i] = mass[i];
}
if (mass[i] is Сhancellery)
{
massСhancellery[i] = mass[i];
}
}
massMagazine = massMagazine.Where(x => x != null).ToArray();
massСhancellery = massСhancellery.Where(x => x != null).ToArray();
LoadAllItem?.Invoke(massMagazine);
LoadAllItem?.Invoke(massСhancellery);
}
}
}
