Exporting specific documents with fields to PDF causes NullReferenceException.

After Excel introduced the dynamic array support, files produced with the older Excel versions have formulas that may be displayed with @ in some contexts. For example a file that had the following:

=SUM(IF(A1:A10=1, B1:B10, 0))

Will be displayed like so:

=SUM(IF(@A1:A10=1, B1:B10, 0))

This is done in order to preserve the behavior of the files created in older versions of Excel.

The files created by SpreadProcessing are also treated by Excel as if they are created by pre-dynamic array Excel. Please, introduce support for the new behavior.

Importing an XLS document containing _xlfn.SINGLE defined name causes an InvalidOperationException.

Add support for digital signature in the XLSX format.

The ImageInline class in the WordsProcessing library has a Description available as a property of the Image property. The FloatingImage class also has an Image property but it is internal and its Description property is not available for users of the SpreadProcessing library.

If the same rule, which uses a formula, is applied on more than one range the result data validation is incorrect, because the formula is translated wrong. E.g. if a custom rule with a formula =IsNumber(A1) is applied on A1:C6 and F1:F6, the rule for cell A1 would be =IsNumber(F1) instead of IsNumber(A1)

The th tag should be imported with a heading style.

When importing a document containing a Plain Text SDT with multiple paragraphs an exception is thrown:

Telerik.Windows.Documents.Flow.Model.Annotations.StructuredDocumentTags.Builders.SdtBuilderFailureException: "This content control type cannot be inserted around multiple paragraphs."

The SUMPRODUCT function is currently not implemented.

Using the COUNTIF function throws an exception if the criteria parameter is set to "<>".

When a format string of type: _ * # ##0_ ;_ * -# ##0_ ;_ * "-"??_ ;_ @_  is set through code and the culture settings of the machine are set so that the number grouping symbol is space, the resulting format string comes out incorrect on export: _,*,# ##0_,;_,*,-# ##0_,;_,*,"-"??_,;_,@_, 

This will happen every time the symbols in-between and after _ and * coincide with the number group separator.

An exception is thrown when the file contains the following format string 

"      PE @ "??0.0;-"      PE @ "??0.0;"      PE @   New";"      PE @ "_0_0@

The exception is thrown in the ValidateNumberFormatDescriptors method.

 Implement text orientation when importing/exporting to/from HTML

Currently EULA requires Telerik assemblies to be protected against unauthorized redistribution, by following specific guidelines for the different types of technology:
- for WPF: https://docs.telerik.com/devtools/wpf/installation-and-deployment/deploying-telerik-ui/protecting-telerik-assembly
- for ASP.NET AJAX: https://docs.telerik.com/devtools/aspnet-ajax/deployment/protecting-the-telerik-asp.net-ajax-assembly
- for WinForms: https://docs.telerik.com/devtools/winforms/installation-deployment-and-distribution/redistributing-telerik-ui-for-winforms

When the guidelines for WinForms or AJAX are followed (namely the call to ValidatePassPhrase() is uncommented in AssemblyProtection.IsValid() method, the following license message is added to the generated documents:
"This document was generated by a copy of Telerik Document Processing licensed for use only by '<MyApp>'."

Workaround: Set the application name as resource in the Application.Current, using the following code:

new System.Windows.Application();
System.Windows.Application.Current.Resources.Add("Telerik.Windows.Controls.Key", "MyApp");
where 'MyApp' should be replaced with the actual application name. References to PresentationFramework and WindowsBase .NET Framework assemblies should be added in order for this approach to work.

Testing Tracked Forum

The NuGet packages don't differ .Net Core projects from .Net Core with Desktop Compatibility Pack. This leads to incorrect resolving of the dependencies and the .Net Core projects targeting .Net Core 3.0 cannot be built.

Workaround: An option applicable for all the libraries is to extract the assemblies from the .nupkg files. For PdfProcessing and ZipLibrary you can use the assemblies directly from the pdfviewer installation folder.

I'm trying to use RadWordsProcessing

to replace text in .docx documents.

when i try to open a document i have an error:

BadImageFormatException: Could not load file or assembly 'PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Reference assemblies should not be loaded for execution.  They can only be loaded in the Reflection-only loader context. (0x80131058)

Allow to export the documents to image.

Being able to generate a thumbnail for example.

The auto row height is not working when the row is merged. This is only valid if the merged cell range contains a single row.