According to PDF specification, the resources used for the dynamic appearance of fields are defined globally in AcroForm "DR" PDF property. However, there are some invalid documents which define these resources locally in the field node which causes exception in PdfProcessing implementation. As there are several such documents we may consider handling such scenario instead of throwing the exception.

Available in R3 2017 SP1 Official Release.

The PDF format includes a general multimedia framework allowing users to insert and play/visualize different media types. The feature is described on page 755 from PDF Reference 1.7.

Implement the Exponential Interpolation Function in PdfProcessing. Currently, NotSupportedFunctionTypeException is thrown with a message "Function type 2 is not supported."

The field name should be preserved on an import-export scenario. However, in some cases when the field name contains non-ASCII characters then the field name is exported with different value compared to the imported one.

Fix available in LIB Version 2017.3.1009.

This operator is used for drawing shading patterns.

Currently, NotSupportedEncryptionException is thrown when PdfFileSource is initialized with an encrypted PDF file.

Available in R2 2018 Official Release Version.

A NullReferenceException is thrown when trying to clone the Signature property of the field.

Available in LIB Version 2018.1.312.

Although this is not a valid postscript scenario we should not throw exceptions and we should instead skip the invalid dictionary end characters.

Fix available in LIB Version 2018.1.312.

Stencil color has to be preserved for images with ImageSource when ImageMask property set to true. Not preserving it results in wrong colors (for instance the image may be visualized as a black rectangle).

Available in R1 2019 Official Release Version.

For some documents, the clippings and colors of the geometries are modified on an import-export scenario.

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In this case, we should use a default alpha source value which is the opacity source.

Usually, the entries are on neighboring rows. However, some producers introduce some extra blank rows between entries and this causes exception in RadPdfProcessing implementation.

Fix available in LIB Version 2018.2.625.

The exception is thrown by System.Linq.Enumerable.Max method during the CidSet calculations.

Fix available in LIB Version 2018.2.730.

The exception is reproduced only with specific custom fonts and is thrown by the ComputeSubset() method of the GlyphTypeface class with the following message: "file does not conform to the expected file format specification". However, we can handle the exception and export the font data using the base class.

Fix available in LIB Version 2018.2.828.

This happens only in cases when the Radio flag is not set and there are multiple widgets with different "ON" state names.

A font descriptor can be used by several fonts. However, when first a TrueType font is imported, later trying to import a Cid font leads to InvalidCastException with the message: "Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.Fonts.FontDescriptor' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.Fonts.CidFontDescriptor'."

Fix available in R3 2018 SP1 release.

This type of fields is currently not supported: https://feedback.telerik.com/Project/184/Feedback/Details/249205 . However, the fields can be skipped and the other content can be imported without throwing an exception.

Fix available in R3 2018 SP1 release.

When the string contained in a PdfHexString instance is empty, invoking ToString() leads to IndexOutOfRangeException.

Available in R3 2018 SP1 release version.

The tj operator is responsible for drawing text content. When such operator is left empty, the import throws NullReferenceException because of the missing operands.

Available in LIB Version 2018.3.1022.