WinForms Controls v23.1.2 Maintenance Release

Announcements Forum

Posted 9 months ago by Actipro Software Support - Cleveland, OH, USA

A new WinForms Controls maintenance release is now available.

Detailed Update List


  • Fixed an issue where dragging a tool window over an outer dock guide that was positioned over a tool window would dock to the outside of the tool window instead of the main host.
  • Fixed an issue where floating a tool window tab within a container could cause a layout issue when using ToolWindowInnerFill MDI mode if it was not the last tool window in the container.


  • Improved the display speed of large completion lists.
  • Updated OverlayPaneCollection.AddSearch to close any existing overlay panes before adding the SearchOverlayPane.
  • Fixed an issue with view line offset to character index calculation logic.
.NET Languages Add-on
  • Updated the C# grammar with improved error handling within block statements.
  • Updated the VB grammar to support a first optional argument in an argument list.
  • Updated the binary assembly reflection logic to handle a possible exception when examining obfuscated assemblies.
  • Fixed C# grammar not recognizing a throw expression used within the lambda body of a switch expression.
  • Fixed an issue where the assembly repository cache mechanism wasn't working properly in .NET Core 3.1 or later applications.
Python Language Add-on
  • Fixed an issue where the package repository cache mechanism wasn't working properly in .NET Core 3.1 or later applications.


  • Fixed Office 2007 Black color scheme to use a dark color for menu border.


  • Fixed possible cross-thread exception that might be raised when invalidating elements if a UIRenderer property was changed on a different thread than the one that created the control.

Actipro Software Support