The signature field preserves information about the time of signing through the TimeOfSigning property of Signature.Properties. However, the DateTime object doesn't keep info about the time zone the document has been signed in. Some customers need to obtain this information.

The customers should have the ability to change the symbol used as a delimiter and the symbol used as a quote for a CSV document.

Handle the import of documents that have an invalid boolean value for the PrintScaling property of ViewerPreferences. The expected value of the /PrintScaling entry is a PDF name object:

/PrintScaling /None

/PrintScaling /AppDefault

When importing such documents, the following exception is thrown: 

InvalidCastException: 'Unable to cast object of type 'Telerik.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfBool' to type 'Telerik.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfName'.'

This missing functionality may be workaround by implementing and registering custom IPdfFilter implementation that decodes JPEG2000 images. The custom decoder may be registered with FiltersManager class and its implementation may be similar to RadPdfViewers JpxDecoder SDK example implementation:

- https://github.com/telerik/xaml-sdk/blob/master/PdfViewer/CustomDecoder/JpxDecoder.cs
- Use a custom JPXDecode filter with RadPdfViewer

Add support for culture-dependent number formats across consecutive calls.

Currently:

CultureInfo.CurrentCulture = new CultureInfo("de-DE");
BuiltInNumberFormats.GetNumber3(); // Returns correct: #.##0,00
CultureInfo.CurrentCulture = new CultureInfo("en-US");
BuiltInNumberFormats.GetNumber3(); // Returns wrong: #.##0,00 (should be #,##0.00)

Workaround:

var thread1 = Task.Run(() =>
{
CultureInfo.CurrentCulture = new CultureInfo("de-DE");
var format = BuiltInNumberFormats.GetNumber3();
 
Console.WriteLine($"Thread 1: {format}");
});
 
var thread2 = Task.Run(() =>
{
CultureInfo.CurrentCulture = new CultureInfo("en-US");
var format = BuiltInNumberFormats.GetNumber3();
 
Console.WriteLine($"Thread 2: {format}");
});
 
await Task.WhenAll(thread1, thread2);

Import archives without an end-of-central-directory record.

Although it is mandatory according to the specification, it seems like other applications don't require this record. Trying to open such an archive with RadZipLibrary currently throws an InvalidDataException.