Aspose.PDF for .NET/ PDF Deleting a page will throw exceptions

Aspose.PDF Product Family
1

Hi Aspose team,

We recently encountered a problem while using Aspose.Pdf. We have a test file. If we try to delete pages, then save file, then delete, then save, repeat these operations several times, an exception will be thrown.

We took a screenshot of the thrown exceptions.
1629969281783_CB653D3B-528A-4220-A42E-F765DDA73EC4.png (38.1 KB)
exception2.png (46.8 KB)

This is the sample code we wrote, which simplifies the original code:

var doc = new Aspose.Pdf.Document(@"C:\Users\User\Desktop\TestFile.pdf");
while (true)
{
    var pages = new int[] { 1 };
    string newPath = @"C:\Users\User\Desktop\New\" + doc.Pages.Count + ".pdf";
    if (doc.Pages.Count > 1)
    {
        doc.Pages.Delete(pages);
        doc.Save(newPath);
    }
    else
    {
        break;
    }
}

But if add a line “doc = new Aspose.Pdf.Document(newPath);” after “doc.Save(newPath);” then no exception will be thrown.

This is our test file:
TestFile.pdf (2.2 MB)

Please take a look, thank you.

2

@Glority_Developer

A ticket with ID PDFNET-50442 has been created in our issue tracking system to further investigate the issue on our end. This thread has been linked with the issue so that you may be notified once the issue will be fixed.

3

Hi @mudassir.fayyaz,

Has this issue been resolved? It was created last year.

4

@Glority_Developer

We regret to share with you that there is no update available on this issue at the moment. We will be sure to inform you once there is an update available on it.

5

@Glority_Developer

Please use the following code example to avoid the shared issue. Hope this helps you.

var doc = new Aspose.Pdf.Document(@"C:\Users\User\Desktop\TestFile.pdf");
doc.IsLinearized = false;
while (true)
{
    var pages = new int[] { 1 };
    string newPath = @"C:\Users\User\Desktop\New\" + doc.Pages.Count + ".pdf";
    if (doc.Pages.Count > 1)
    {
        doc.Pages.Delete(pages);
        doc.Save(newPath);
    }
    else
    {
        break;
    }
}