Digital signature in PDF

[inyazar]

Hi,

How can i access a digital signature in PDF file from VB.NET?
I need to access to the information on it, for example the date of where it was signed

Thanks.

Best regards.
Galder

[amy.zhao]

Hi Galder,

Thanks for your posting.
Please refer to the following code.

Code: Select all

 
Dim signatures As New List(Of PdfSignature)()
        Using doc = New PdfDocument(temp)
            Dim form = DirectCast(doc.Form, PdfFormWidget)
            For i As Integer = 0 To form.FieldsWidget.Count - 1
                Dim field = TryCast(form.FieldsWidget(i), PdfSignatureFieldWidget)

                If field IsNot Nothing AndAlso field.Signature IsNot Nothing Then
                    Dim signature As PdfSignature = field.Signature
                    Dim dataTime As DateTime = signature.[Date]
                End If

            Next
        End Using

Best Regards,
Amy
E-iceblue support team

[inyazar]

Thanks.

It wrows great for me.

Best regards

[amy.zhao]

Hi,

Thanks for your feedback.
Welcome to write to us again if you have further problems.

Best Regards,
Amy
E-iceblue support team