private void ListPhieuThanhToan(int IDKhachHang)
{
var KhachHang = DBDataProvider.DB.khKhachHangs.Where(x => x.IDKhachHang == IDKhachHang).FirstOrDefault();
memoNoiDungTT.Text = "";
memoNoiDungTT.Text = "THANH TOÁN: " + KhachHang.HoTen.ToUpper();
var ListNhapHang = DBDataProvider.ListPhieuNhapHang(IDKhachHang);
ccbPhieuThanhToan.DataSource = ListNhapHang;
ccbPhieuThanhToan.DataBind();
}