public string ToJSONString()
{
string dateFormat = "dd-MMM-yyyy";
string amountFormat = "00.00";
return(string.Format("$!$\r\n \"invoiceType\": \"{0}\",\r\n \"supplierNumber\": \"{1}\",\r\n \"supplierSiteNumber\": \"{2}\",\r\n \"invoiceDate\": \"{3}\",\r\n \"invoiceNumber\": \"{4}\",\r\n \"invoiceAmount\": {5},\r\n \"payGroup\": \"{6}\",\r\n \"dateInvoiceReceived\": \"{7}\",\r\n \"dateGoodsReceived\": \"{8}\",\r\n \"remittanceCode\": \"{9}\",\r\n \"specialHandling\": \"{10}\",\r\n \"nameLine1\": \"{11}\",\r\n \"nameLine2\": \"{12}\",\r\n \"addressLine1\": \"{13}\",\r\n \"addressLine2\": \"{14}\",\r\n \"addressLine3\": \"{15}\",\r\n \"city\": \"{16}\",\r\n \"country\": \"{17}\",\r\n \"province\": \"{18}\",\r\n \"postalCode\": \"{19}\",\r\n \"qualifiedReceiver\": \"{20}\",\r\n \"terms\": \"{21}\",\r\n \"payAloneFlag\": \"{22}\",\r\n \"paymentAdviceComments\": \"{23}\",\r\n \"remittanceMessage1\": \"{24}\",\r\n \"remittanceMessage2\": \"{25}\",\r\n \"remittanceMessage3\": \"{26}\",\r\n \"glDate\": \"{27}\",\r\n \"invoiceBatchName\": \"{28}\",\r\n \"currencyCode\": \"{29}\",\r\n \"invoiceLineDetails\": [$!$\r\n \"invoiceLineNumber\": {30},\r\n \"invoiceLineType\": \"{31}\",\r\n \"lineCode\": \"{32}\",\r\n \"invoiceLineAmount\": {33},\r\n \"defaultDistributionAccount\": \"{34}\",\r\n \"description\": \"{35}\",\r\n \"taxClassificationCode\": \"{36}\",\r\n \"distributionSupplier\": \"{37}\",\r\n \"info1\": \"{38}\",\r\n \"info2\": \"{39}\",\r\n \"info3\": \"{40}\"\r\n $&$]\r\n$&$",
InvoiceType,
SupplierNumber,
SupplierSiteNumber.ToString("000"),
InvoiceDate.ToLocalTime().ToString(dateFormat),
InvoiceNumber,
InvoiceAmount.ToString(amountFormat),
PayGroup,
DateInvoiceReceived.ToLocalTime().ToString(dateFormat),
DateGoodsReceived.HasValue ? DateGoodsReceived.Value.ToLocalTime().ToString(dateFormat) : "",
RemittanceCode,
(SpecialHandling ? "D" : "N"),
NameLine1,
NameLine2,
AddressLine1,
AddressLine2,
AddressLine3,
City,
Country,
Province,
PostalCode = !string.IsNullOrEmpty(PostalCode) ? PostalCode.Replace(" ", ""): string.Empty,
QualifiedReceiver,
Terms,
PayAloneFlag,
PaymentAdviceComments,
RemittanceMessage1,
RemittanceMessage2,
RemittanceMessage3,
GLDate.HasValue ? GLDate.Value.ToLocalTime().ToString(dateFormat) : "",
InvoiceBatchName,
CurrencyCode,
InvoiceLineNumber,
InvoiceLineType,
LineCode,
InvoiceLineAmount.ToString(amountFormat),
DefaultDistributionAccount,
Description,
TaxClassificationCode,
DistributionSupplier,
Info1,
Info2,
Info3
).Replace("$!$", "{").Replace("$&$", "}"));
}