Add watermark in PDF document using Aspose.PDF for .NET - Invalid array format

Aspose.PDF Product Family
1

Hello there:
When we use Aspose.Total for .NET to watermark a PDF file, it will report “Invalid array format. What is the reason for this? What should I do to eliminate this error?”
hope to get your reply
best wishes

2

@xiangliling,

Thanks for contacting support.

Can you please share source file along with sample code and complete error details. We will investigate this scenario in our environment to help you out.

3

Error code: pdfDocument.Pages [Page_counter] .ArtBox reports an error directly
Error message:
‘pdfDocument.Pages [Page_counter] .ArtBox’ threw an exception of type ‘System.ArgumentException’

Code example:
Aspose.Pdf.Document pdfDocument = new Aspose.Pdf.Document (stream);
for (int Page_counter = 1; Page_counter <= pdfDocument.Pages.Count; Page_counter ++)
{
Ranch
string width = pdfDocument.Pages [Page_counter] .ArtBox.Width;
string height = pdfDocument.Pages [Page_counter] .ArtBox.Height;
}

4

@xiangliling,

Can you please share complete working sample code along with source file as well to further investigate.