public bool IsFullPaid()
{
decimal totalInvoiceAmount = SalesInvoiceLines.Sum(a => a.Amount);
decimal totalPaidAmount = 0;
decimal totalAllocation = CustomerAllocations.Sum(a => a.Amount);
foreach (var line in SalesInvoiceLines)
{
totalPaidAmount += line.GetAmountPaid();
}
return((totalPaidAmount + totalAllocation) >= totalInvoiceAmount);
}
private decimal GetAvailableAmountToAllocate()
{
return(SalesReceiptLines.Sum(a => a.AmountPaid) - CustomerAllocations.Sum(a => a.Amount));
}
