Excel-DNA Version 0.30 Released

Excel-DNA Version 0.30 has now been released on CodePlex. The download
is available from http://exceldna.codeplex.com/releases/view/95861.

This version implements support for RTD-based asynchronous worksheet
functions based on a thread-safe RTD base class – ExcelRtdServer. The
asynchronous support is designed to (optionally) integrate with
the .NET 4.0 Task-based operations, as well as the Reactive Extensions
library, allowing IObservables to be exposed as ‘live’ worksheet UDFs
– (thus ‘RxExcel’). The language-specific support for asynchronous
functions found in C# 5, Visual Basic 11 and F# 2.0 can be easily
integrated with the Excel-DNA asynchronous interfaces. Some examples
experimenting with the new async features are available in the

Various bug fixes have also accumulated over the last 18 months, and
are collected in this release.

As always, I greatly appreciate any feedback on this version, and on
Excel-DNA in general. Any comments or questions are welcome on the
Google group or by contacting me directly.

Changelist – Version 0.30 (12 December 2012)

* Fixed LoadComAddIn error when using a direct ExcelComAddIn-derived
* Fixed (Ribbon Helper) display in ribbon tooltips.
* Fixed RTD / array formula activation bug.
* Fixed IsMacroType=true reference argument sheet error
(ExcelReference pointed to active sheet instead of current sheet).
* Fixed array marshaling pointer manipulation concern under 64-bit
* Fixed check for derived attributes too – for backward compatibility
with v. 0.25.
* Fixed assembly multiple-loading problem for packed assemblies.
* Fixed persistent COM registration (Regsv32.exe /
ComServer.DllRegisterServer) to allow HKCR registration whenever
possible (for UAC elevation issue).
* Fixed Excel version check when COM / RTD Server loads before add-in
is loaded – ribbon would not load.
* Fixed IntPtr OverflowException in high-memory 32-bit processes.
* Fixed custom task panes UserControl activation – do HKCR
registration whenever possible (for UAC elevation issue).
* Fixed double[0,1] array marshaling memory allocation error with
potential access violation.
* Allow abstract base classes in ExcelRibbon class hierarchy. Now
loads the first concrete descendent of ExcelRibbon as the ribbon
* Remove Obsolete class ExcelDna.Integration.Excel. (Use ExcelDnaUtil
instead.) Allows smooth XlCall usage.
* Allow external SourceItem packing.
* Add ExcelAsyncUtil for async macro calls.
* Add thread-safe RTD server base class ExcelRtdServer.
* Add async function helper as ExcelAsyncUtil.Run.
* Add support for Reactive Extensions via RTD via
ExcelAsyncUtil.Observe and related interfaces.
* Change ExcelRibbon and ComAddIn loading to use declared ProgId and
Guid if _both_ attributes are present. Fixed Ribbon QAT issue.
* Revisit caching of Application object.
* Rename ExcelDna.Integration.Integration to
* Implement macro shortcuts (from ExcelCommand attributes).
* Changed re-open via File->Open to do full AppDomain unload and add-
in reload.

This entry was posted in Uncategorized and tagged . Bookmark the permalink.