TransactionId Property
Id of the transaction for which the Instant Payment Notification was sent.
Syntax
public String getTransactionId();
Remarks
This property will be filled after calling either the FillFormVars or VerifyIPN method.
The value of this property is parsed out of the Instant Payment Notification data that was posted by PayPal to your webserver. If you are passing the entire post data to FillFormVars, this will save you having to parse each form variable separately.
This property is read-only.
Default Value
""