public static void TongDoanhThu()
{
Console.WriteLine($"\t\t\t Doanh Thu Ca Nam: ");
QuanLiHoaDon.DanhSachHoaDon(QuanLiHoaDon.lHoaDon);
Console.WriteLine("\t\t\t ---------------------------------------------------");
Console.WriteLine($"\t\t\t Tong: | {QuanLiHoaDon.TinhTien(QuanLiHoaDon.lHoaDon), -12}");
Console.WriteLine("\t\t\t ---------------------------------------------------");
}
public static void DoanhThuTheoThang(string Thang)
{
List <HoaDon> lHD = QuanLiHoaDon.lHoaDon.FindAll(x => x.ThoiGian.Month.ToString() == Thang);
if (lHD.Count != 0)
{
Console.WriteLine($"\t\t\t Doanh Thu Thang {Thang}: ");
QuanLiHoaDon.DanhSachHoaDon(lHD);
Console.WriteLine("\t\t\t ---------------------------------------------------");
Console.WriteLine($"\t\t\t Tong: | {QuanLiHoaDon.TinhTien(lHD), -12}");
Console.WriteLine("\t\t\t ---------------------------------------------------");
}
else
{
Console.WriteLine($"Thang {Thang} Khong Co Doanh Thu");
}
}