We had promised a X# 2.13 release "end of July"
We were about to release this build to our beta testers, but we found some last minute issues, mostly in the VS integration.

Since some of our team members are going for a short, well deserved, holiday, we will delay this build for a couple of weeks.
If you are "deperately" waiting for some of the new features, please contact us.
We can still give you the current installer, but there are a few "known issues" that some people may see as "show stoppers".

Comments (1 Comment)

We think it is time for a progress update and a preview of what you can expect the rest of this year from us.

When What
End of July 2022 A new build X# 2.13 for our FOX subscribers.
This build will have some changes to the compiler, mostly in the area of the handling of DEFINES and numeric conversions and the /vo4 and /vo11 compiler options.
No real new features are planned for the compiler.
The runtime contains some fixes for FoxPro code and contains some small enhancements.
The VS Integration contains improvements in the formatting and intellisense, Windows Forms editor
End September 2022 We plan to release a new build (most likely called X# 3.0) that is compatible with .Net 5 and beyond.
This requires changes to the build system and VS integration and some changes to the compiler.
We will also additional compile the X# runtime for .Net 5 and beyond.
This build will also no longer be "binary compatible" with X# 2, so new versions of 3rd party components will be needed.
Of course we will still support .Net Framework 4.x
We also plan to release the first version of the VFP Xporter  that takes a VFP project file and converts that to a .Net solution.
October 2022 We hope to meet many of you during our X# summit in Memmingen.
And you can still register for this event.
We will also present a session on Virtual FoxFest about converting FoxPro apps to .Net.
December 2022 We plan to release the final version of the AnyCpu/Unicode VO Compatible GUI Classes and the AnyCpu/Unicode VO Compatible SQL Classes.
A first beta version of the X# SQL RDD is also planned for this month
These runtime components will be for FOX subscribers only.
Comments (18 Comments)

Today we have released a public installer for XSharp Cahors 2.12.

The what's new document describing all the changes can be found here:

XSharp 2.12.2 what's new
Popular 552.55 KB

The public installer can be downloaded here.

{rsfiles path="installers/XSharpSetupPublic2.12.2.0.zip"}

We have also updated the installer for the FOX version of 2.12.

{rsfiles path="fox/Compiler/XSharpSetupFox2.12.2.1.zip"}

We have made the following changes in this installer (these changes are also included in the public version)

  • Restored support for VS 2022, versions 17.0 and 17.1
  • Fixed an issue in the VS integration that would cause problems with TFS
  • The runtime help for functions and methods with CLIPPER calling convention (such as the Str() function) has been updated.

If you have downloaded before and you do not use VS 2022 version 17.0 or 17.1 and you do not use TFS then you do not need to download this update, unless you want to get the updated help file.

Comments (5 Comments)

Peter Monadjemi from the EurekaFach team has written an article about their migration from a Visual Objects application to X#.

Please look here for this story

Comments (9 Comments)

Today we have released an installer for our FOX subscribers only for XSharp Cahors 2.12 which contains some fixes for problems reported with X# 2.11, and some new features.

The what's new document describing all the changes can be found here:

XSharp 2.12.2 what's new
Popular 552.55 KB

{rsfiles path="fox/Compiler/XSharpSetupFox2.12.2.1.zip"}

A public release is planned for next week.


Comments (1 Comment)

Bernhard Mayer from MotionData (Austria) has written a description of the application that his company migrated to X#.
See https://www.xsharp.eu/links/examples/motiondata-dms for more information.
If you have a similar story, please share that with us. We would love to hear from you.

Comments (0 Comments)

You have not heard from us in a while, but that does not mean that we have been idle.
We are finalizing the 2.12 build of X# at this moment that comes with several changes that people have asked for:


  • TEXT .. ENDTEXT support in all dialects. We have change how this command is implemented to make it as flexible as possible. The TEXT .. ENDTEXT is a UDC that is translated to a #text .. #endtext preprocessor directive. You will have the ability to change how this command works.
  • We have added a new compiler option (/vo17) to make the BEGIN SEQUENCE commands more compatible with Visual Objects. Commands with a RECOVER USING statement were "swallowing" exceptions in the past. With this option the exceptions will be sent to a special function (FUNCTION _SequenceError(e AS Exception) AS USUAL)) that you can override in your code. The default implementation of this function calls the runtime error handler.
    And when there is NO RECOVER USING then the compiler will generate one and will call a runtime function that you can also override (FUNCTION _SequenceRecover(uBreakValue AS USUAL) AS VOID).) Of course "real" exceptions will also call the _SequenceError that was mentioned above.
  • We fixed several issues in the compiler


  • We fixed several issues in the runtime

Visual Studio integration

  • Many issues were fixed in the editor.
  • We have added a new options page (Tools/Options/Text Editor/X#) where you can control which suggestions the editor will suggest in "general" code completion list. Code completion after a colon or dot will show namespaces, types, members etc. And codecompltion after AS or IS will show types and namespaces. But for example code completion after the := operator may show locals, fields & properties of the current class, Globals, Functions etc. You can control where the editor looks for these entries.
  • You can now control the indenting settings from the .editorconfig file.

The new version will be tested by a small group of beta testers this week. We plan to release it to the rest of the subscribers next week, and a new public version will most likely be released a week after that.

Comments (1 Comment)

X# Summit Memmingen 2020


In October 2022 we are organizing our first European conference in years. We first tried to do this in 2020, but due to the international Covid crisis that event had to be cancelled.

Since we are a small open source project and we have limited financial resources, we have chosen to organize this as a relatively low budget event. We have also chosen a location in the south of  Germany, so developers from Switzerland, Austria and North Italy are also able to come with a reasonable travel time.

The main audience for this event is XSharp developers with  VO/Vulcan background. However we will also spend ample time on the other dialects.

We will present the current state of the X# development and show how to migrate your apps to XSharp. We will also discuss the internals of X# and how you can extend X#. Finally we will discuss our future plans, such as our support for next versions of .Net and will show some of the work in progress

With the help of our local partner Karl Faller we have selected a venue for the event.

This summit is structured to encourage open and facilitated face-to-face discussion and idea sharing amongst all attendees. Refreshments will be provided all day with scheduled lunch and snack breaks.


The event will take place at the following hotel:

   Hotel Weisses Ross       Hotel Weisses Ross
Kalchstr. 16
87700 Memmingen


We plan to have 2 days with 10 different sessions that will not be repeated. The detailed list of sessions will be published later.

(Call for) Speakers

On behalf of the X# development team there will be 2 or 3 members giving sessions. We also plan to do a session in which customers can demonstrate applications that were migrated to X# showing apps "before" and "after" the migration with a short description of how the conversion went. If you are willing to demonstrate your app, please contact us.
We are also looking for other speakers. If you are interested in speaking, please send your session proposals to before June 1, 2022.  We expect you to prepare a whitepaper or presentation about your subject with practical examples. Sessions should be code centric.
Speakers will get free admittance to the event.


To register for this event, please send an email to .

We have the following registration fee for the event:

Description FOX
- Early bird (book before September 2022) 350* 400*
- Normal price (starts September1, 2022) 450* 500*
  • This includes the refreshments, lunch and dinner on the 6th and refreshments and lunch on the 7th.
  • We expect people to arrive on Wednesday October 5.
  • We have negotiated a special discounted hotel room price of EUR 90 per person per night including breakfast for a Single room. Double rooms are available at EUR 137 per night including breakfast. Local taxes may apply. You can book directly with the hotel https://www.hotelweissesross.de/. and tell them that you are part of the X# Summit group.
  • Room are available from Wednesday 5th until Saturday 8th.
  • For those attendees that are staying until Saturday 8th, we plan to go out and have dinner together on Friday 7th in a restaurant in Memmingen.
  • Please note that all prices are excluding 21% VAT for EU residents. If you register as a Company and let us know your VAT number then we will not have to charge the VAT.


Comments (0 Comments)