Replacement for PDFDocumentSource?

[Johnathan]

   I have a PDF file that's been imported into a MemoryStream object and now I need to display it using the Telerik UI for WPF pdfViewer control.  The existing documentation says that you can create a PdfDocumentSource object and bind the pdfViewer.DocumentSource to that.  However, either PdfDocumentSource no longer exists, or I can't figure out what the correct Namespace is.

   I'm using TelerikUI for WPF v2024 Q2.  However changelogs for 2020 (https://docs.telerik.com/devtools/wpf/controls/radpdfviewer/changes-and-backward-compatibility/backward-compatibility)  say that: 

Changed
Obsolete constructors of Telerik.Windows.Documents.Fixed.PdfDocumentSource:

PdfDocumentSource(Uri uri, FormatProviderSettings settings)
PdfDocumentSource(Stream stream, FormatProviderSettings settings)
What to do now
Use the overloads that accept Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.PdfImportSettings instead.

   I've also read that there is some kind of merge going on trying to replace the previous PDF code with Telerik.Windows.Documents.Fixed .  In any case, I can't seem to figure out how to go from a MemoryStream to something that the pdfViewer.DocumentSource likes.  

   Can anyone help with a very basic code sample to take a PDF as a memorystream and create something that pdfView.DocumentSource will accept?  Thank you!

 

[Dimitar]

Hi Johnathan,

Directly passing the memory stream works on my side. Here is an example: 

var bytes = File.ReadAllBytes("..\\..\\..\\lorem.pdf");
var str = new MemoryStream(bytes);
this.pdfViewer.DocumentSource = new PdfDocumentSource(str);

Another approach is to directly set the document: 

var bytes = File.ReadAllBytes("..\\..\\..\\lorem.pdf");
var str = new MemoryStream(bytes);
PdfFormatProvider provider = new PdfFormatProvider();
RadFixedDocument document = provider.Import(str);
pdfViewer.Document = document;

I hope this helps. Should you have any other questions do not hesitate to ask.

Regards,
Dimitar
Progress Telerik

[Johnathan]

Thank you Dimitar!  Where do you get PdfDocumentSource?  Documentation (https://docs.telerik.com/devtools/wpf/api/telerik.windows.documents.fixed.pdfdocumentsource) says it's TELERIK.WINDOWS.DOCUMENTS.FIXED, however it doesn't appear to be there anymore:

[Dimitar]

Hi Johnathan,

The assembly is Telerik.Windows.Controls.FixedDocumentViewers. On the left side, you can see the namespace. The assembly is at the bottom (see attached). 

Let me know if I can be of further assistance.

 

[Johnathan]

Thank you very much Dimitar!