Hi Martin,
Thank you for your interest in Syncfusion PDF.
Calculating File creation/closing Time
We can calculate file creation and its closing time using DateTime class. Here is the sample code snippet to calculate the time creation time,
Dim FileCreationTime As DateTime = DateTime.Now
'Create a new PDF Document. The pdfDoc object represents the PDF document.
Dim pdfDoc As PDFDocument = New PDFDocument()
'Save the PDF Document to disk.
pdfDoc.Save("Sample.pdf")
Dim endTime As DateTime = DateTime.Now
' File creation Time.
Dim time As TimeSpan = endTime.Subtract(FileCreationTime)
Please do find the sample which demonstrates the above mentioned feature and let me know if this helps,
http://www.syncfusion.com/uploads/redirect.aspx?file=Sample_80005_2b134314.zip&team=supportRegards,
Suba