public List <InvoiceViewModel> FetchInvoicesByAppointmentId(List <Appointment> appointments)
{
foreach (var appointment in appointments)
{
Invoice invoice = patientBusinessLayer.GetInvoice(appointment.Id);
if (invoice != null)
{
invoicelist = new InvoiceViewModel();
invoicelist.InvoiceId = invoice.Id;
invoicelist.PatientName = patientBusinessLayer.GetPatientNameByAppointmentId(appointment.Id);
invoicelist.AppointmentDate = Convert.ToDateTime(patientBusinessLayer.GetAppointmentDate(appointment.Id));
invoicelist.Total = patientBusinessLayer.GetTotalBill(appointment.Id);
invoiceListViewModel.Add(invoicelist);
}
}
return(invoiceListViewModel);
}