// create Invoice public MonetaSdkResult sdkMonetaCreateInvoice(string payer, long payee, decimal amount, string clientTransaction, bool isRegular) { MonetaSdkResult result = new MonetaSdkResult(); try { InvoiceRequest invoiceRequest = new InvoiceRequest(); if (String.Compare(payer, "") != 0) { invoiceRequest.payer = payer; } invoiceRequest.payee = payee; invoiceRequest.amount = amount; invoiceRequest.clientTransaction = clientTransaction; OperationInfo operationInfo = new OperationInfo(); List <KeyValueAttribute> mntAttributes = new List <KeyValueAttribute>(); if (isRegular) { KeyValueAttribute monetaAtribute = new KeyValueAttribute(); monetaAtribute.key = "PAYMENTTOKEN"; monetaAtribute.value = "request"; mntAttributes.Add(monetaAtribute); } operationInfo.attribute = mntAttributes.ToArray(); invoiceRequest.operationInfo = operationInfo; response = client.Invoice(invoiceRequest); result = prepareResult(); } catch (Exception e) { result.error = true; result.errorMessage = e.Message; } return(result); }