void HoaDonClient_HoaDon_GetItemCompleted(object sender, HoaDon_GetItemCompletedEventArgs e)
 {
     HoaDonInfo HoaDon = e.Result;
     PhongClient = new PhongSVCClient();
     PhongClient.TinhTrang_Phong_EditCompleted += new EventHandler<System.ComponentModel.AsyncCompletedEventArgs>(PhongClient_TinhTrang_Phong_EditCompleted);
     PhongClient.TinhTrang_Phong_EditAsync(HoaDonID,(int)cbxPhong.SelectedValue);
 }
 void HoaDon_HoaDon_GetItemCompleted(object sender, HoaDon_GetItemCompletedEventArgs e)
 {
     try
     {
         HoaDonInfo item = e.Result;
         txtNgayVao.Text = DateToNumberConverter.Date2Vietnamese(item.NgayVao);
         txtGioVao.Text = item.GioVao.ToString();
         txtPhutVao.Text = item.PhutVao.ToString();
         txtNgayRa.Text =DateToNumberConverter.Date2Vietnamese(item.NgayRa);
         txtGioRa.Text = item.GioRa.ToString();
         txtPhutRa.Text = item.PhutRa.ToString();
         TienTraTruoc = item.KhuyenMai;
         txtKhuyenMai.Text = Format_NumberVietnamese(item.KhuyenMai.ToString());
         txtKhoanKhac.Text = item.KhoanKhac.ToString();
         txtGhiChu.Text = item.GhiChu;
         TenKhachHang = item.TenKhachHang;
         int GioVao_So = int.Parse(item.GioVao.ToString() + item.PhutVao.ToString());
         int GioRa_So = int.Parse(item.GioRa.ToString() + item.PhutRa.ToString());
         int LoaiThue = item.LoaiThue;
         int Ca = item.Ca;
         switch (LoaiThue)
         {
             case 0:
                 TinhTienTheoGio(item.GioVao, item.PhutVao, item.GioRa, item.PhutRa,Ca);
                 break;
             case 1:
                 TinhTienTheoNgay(item.NgayVao_So, item.NgayRa_So);
                 break;
             case 2:
                 TinhTienQuaDem(item.NgayVao_So, item.NgayRa_So, item.GioRa, item.PhutRa);
                 break;
             case 3:
                 TinhTienTheoThang(item.NgayVao_So, item.NgayRa_So);
                 break;
         }
         //Hien Thong Tin Hoa Don
         if (txtKhoanKhac.Text == "")
         {
             KhoanKhac = 0;
         }
         else
         {
             KhoanKhac = decimal.Parse(txtKhoanKhac.Text.ToString());
         }
         txtTongThanhToan.Text = Format_NumberVietnamese((DichVu + TongTienPhong + KhoanKhac - TienTraTruoc).ToString());
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
 }