How to find out PDF Certificate was signed by

[RIA HANTORO]

Hii. Does Syncfusion have library to find out the PDF files that have certificate was signed by anyone ? and how many people signed it ?

Is it possible with Syncfusion library?

[Sowmiya Loganathan]

Hi Ria, 

Thank you for contacting Syncfusion support. 

We can find whether the PDF document that contains signed with certificates or not, by using IsSigned property available in the PdfLoadedSingatureField instance and also we can find out the count of the signed fields.  Please find the below sample to illustrate this,  

https://www.syncfusion.com/downloads/support/directtrac/148384/ze/DigitalSignatureSample1477747902  

Please try the above sample in your end and let us know whether is satisfies your requirement.  

Regards, 

Sowmiya Loganathan