Checkbox disappears after flattening the PDF form.

Question

Hi,Im flattening a PDF document that contains 2 pages with a checkbox field, the resulted PDF is missing the checkbox field in the second page. The first page gets flattened just fine.             PdfDocument.Merge(finalDocument, pdfList)            finalDocument.Form.Flatten = True            finalDocument.Save("flattened.pdf")            finalDocument.Close(True)Attachment: pdf_with_checkboxes_a01c795b.zip

Gowthamraj Kumar · Answer

Hi Ricardo, 
 
Thank you for using Syncfusion products. 
  
We have tried to reproduce the reported issue in our end, but it is working properly. We have created a sample and load the provided pdf document and flatten it, the output document contains the checkbox field at the second page. We were not able to reproduce the issue and we have shared the sample with output document for your reference. Kindly please run the sample in your end and let us know the result. 
 
Sample:  https://www.syncfusion.com/downloads/support/forum/160450/ze/SampleVB-1315645290  
 
Please refer the below link for more information, 
UG: https://help.syncfusion.com/file-formats/pdf/working-with-forms  
 
If still you are facing an same issue, kindly provide more details such as modified sample, output document, complete code snippet, product version to check the issue in our end. So, that it will be helpful for us to analyze and assist you further on this. 
 
Regards, 
Gowthamraj K