static public void SortByFhone(PhoneBook book)
{
ListSort.Sort(book, (client1, client2)
=> client1.foneNumber > client2.foneNumber);
}
static public void SortByadress(PhoneBook book)
{
ListSort.Sort(book, (client1, client2) => string.Compare(client1.adress, client2.adress) < 0);
}
static public void SortByLastName(PhoneBook book)
{
ListSort.Sort(book, (client1, client2) => string.Compare(client1.lastName, client2.lastName) < 0);
}