Using the Patagames.Pdf after preview some files we're receiving the error below:

System.AccessViolationException occurred
HResult=-2147467261
Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source=Patagames.Pdf
StackTrace:
at Patagames.Pdf.Pdfium.FPDF_GetPageSizeByIndex_native(IntPtr document, Int32 page_index, Double& width, Double& height)
at Patagames.Pdf.Pdfium.FPDF_GetPageSizeByIndex(IntPtr document, Int32 page_index, Double& width, Double& height)
at Patagames.Pdf.Net.Controls.Wpf.PdfViewer.GetRenderSize(Int32 index)
InnerException:


Code:

PatagamesAccessViolation.png (112kb) downloaded 42 time(s).

Thank you for your support

Yes, we're using these versions:

Patagames.Pdf.dll - 3.7.7.2704

Patagames.Pdf.Wpf.dll - 3.5.7.0

Pdfium - 3.7.2.2704

Thank you

Hi Paul,

Yes, we're using the PdfViewer without changes for debug purposes.

By now we don't have a minimal app to send. However, the scenario we have is this:

1. We get a modified byte array from the Aspose (with highlighted text) and give to Pdfium.
   
2. It works good most of the time.
   
3. Switching between a list of documents then the error appears. However, is randomic.

Thank you.

We're doing test with a version using the MemoryStream.

One question regarding the dispose:

Is the MemoryStream being disposed by pdfium on its own or do we still need to dispose of it manually?

We're passing the MemoryStream wrap at PdfDocument.Load and doing the PdfDocument.Dispose.
Do I need to store a pointer to the MemoryStream and do close/dispose of it even after that? Is that what you mean?

Thank you Paul. We're using the MemoryStream version and solved the problem for us until now.