InfoPath Dev

Hi. I have a SharePoint 2007 InfoPath form library , which contains multiple attachment as base64 . Now it has moved to SharePoint Online as Document library . To support existing functionality I have to save and update the existing XML ( using SPFX REACT pnp ) . Now to upload the attachment I am able to convert the file to Base64 , but it does not match with existing uploaded file . I want to know the logic how InfoPath convert file to base64 and save it to XML . Please help . Thank you .

Here's a link with some sample code that may point you in the right direction: https://support.microsoft.com/en-nz/help/2517906/how-to-encode-and-to-decode-a-file-attachment-programmatically-by-usin

Thank you . It was helpful .