Aspose.PDF loading invalid documents resulting in program crashing

Aspose.PDF Product Family
1

Hi team,

I have an issue with Aspose PDF (version 20.6.0.0) .NET Core version under Linux when Aspose PDF loads invalid documents, it returns a Document object with one page and that page is null. When I check if the page is null (seems causing Aspose.PDF to load the page), the program crashes.

My sample code:
Aspose.Pdf.Document document = new Aspose.Pdf.Document(inputFile);
if(document.Pages[1] != null) // the program crashes here
{ }

Here is the sample file sample.zip (1.4 KB)

Could you please help investigate and fix the issue?

Thanks.

2

@dunghnguyen

I request you to explain that do you want to check if the page is blank or if you want to check if there is any page in the PDF document?

3

Hi @mudassir.fayyaz,

Thank you for checking this issue.
I would like to check if the page is blank.

Regards

4

@dunghnguyen

You can check blank page of a PDF with the following code:

Document pdfDocument = new Document(dataDir + "Before.pdf");
foreach(Page page in pdfDocument.Pages)
{
    Console.WriteLine(page.Number + " is blank = " + page.IsBlank(0.01d));
}