Some test text!

Type conversionkeyboard_arrow_down

Type Conversion

PDFTron type conversion allows you to call C functions directly from C#.

Managed type and binding types

PDFTron for Xamarin SDK takes advantage of PInvoke which allows calling C functions from C# directly. This applies to all core classes that are shared between Xamarin.Android and Xamarin.iOS. However, the PDFViewCtrl class and PDFViewCtrlTools library are direct Xamarin bindings from the source code. This article will walk you through how to deal with managed type and binding types.

Key concepts:

  • All managed types are in pdftron namespace
  • All binding types are in pdftronprivate namespace

A TypeConvertHelper class is provided to convert between managed types and binding types. For example:


From pdftronprivate.PDF.PDFDoc to pdftron.PDF.PDFDoc:

var pdfDoc = TypeConvertHelper.ConvPdfDocToManaged(privatePdfDoc);

From pdftron.PDF.PDFDoc to pdftronprivate.PDF.PDFDoc:

var privatePdfDoc = TypeConvertHelper.ConvPDFDocToNative(pdfDoc);


From pdftronprivate.PDF.Annot to pdftron.PDF.Annot:

var annot = TypeConvertHelper.ConvAnnotToManaged(privateAnnot);

From pdftron.PDF.Annot to pdftronprivate.PDF.Annot:

var privateAnnot = TypeConvertHelper.ConvAnnotToNative(annot);

Get the answers you need: Support


Free Trial

Get unlimited trial usage of PDFTron SDK to bring accurate, reliable, and fast document processing capabilities to any application or workflow.

Select a platform to get started with your free trial.

Unlimited usage. No email address required.