LINQPad 9 - Early Preview now available

JoeAlbahari

@drocx - I think I've found the issue. Let me know if it's not fixed in 9.3.12.

@JeffMercado - This will be fixed in 9.3.12.

JeffMercado

The unhandled error happened again and checked the event log, nothing terribly useful for me, maybe helps find a cause?

To be clear, LP9 continued to run normally. This only stopped the script from running the first time after an update to the code. Rerunning again (with no further changes) runs as expected.

Source: .NET Runtime

Application: LINQPad9.exe
CoreCLR Version: 9.0.1025.47515
.NET Version: 9.0.10
Description: The process was terminated due to an unhandled exception.
Exception Info: exception code c0000008, exception address 00007FFD48C45CEA
Stack:

Source: Application Error

Faulting application name: LINQPad9.exe, version: 1.0.8.0, time stamp: 0x68524449
Faulting module name: ntdll.dll, version: 10.0.26100.6899, time stamp: 0x234c0f50
Exception code: 0xc0000008
Fault offset: 0x0000000000165cea
Faulting process id: 0x43FC
Faulting application start time: 0x1DC500FE9B40307
Faulting application path: C:\Program Files\LINQPad9\LINQPad9.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: 88ad5cb6-e961-4a89-9797-a1bbca24f2c9
Faulting package full name: 
Faulting package-relative application ID: 

This might indicate an issue with my OS files, ran a scan and it made some repairs... we'll see if it happens again.

sgmoore

Convert to class/Convert to record.

Sometimes you slip in new features with just a casual little mention and I almost missed this one.

That will get used a lot!

Thanks (yet again).

Hegi

There seems to be some lag with copy-paste in the new version. The paste part works just as expected, but both copy and cut freezes the app for a second or so. Check the gif for an example. (It's the same behavior with shortcuts, however you can see it more clearly with the
context menu)

P.S. Sorry if this is the wrong place to post it. I haven't found an explicit >>report-a-bug-here<< place for LinqPad 9.

JoeAlbahari

When this delay occurs, does the clipboard operation succeed? Can you paste the text into another application besides LINQPad?

sgmoore

FYI - The new sample "Demo - Using Mermaid to draw diagrams.linq" contains a connection to your "Licensing database"

Sample runs fine when I remove the connection.

JoeAlbahari

Thanks - will clean this up.

JeffMercado

Got a different error this time:

Script ended unexpectedly.

Nothing in the event logs. Only other thing I could find is the exit status for the script process:

Script process ended with exit code -1073741816.

---

I've also seen a third variation of the unknown error. Nothing in the logs still, but "Script successful" in the status bar.

Script ended because an uncatchable exception was thrown. To debug, press Ctrl+U to enable breaking on exceptions.

Rerunning again runs normally. In this case, I had just logged back in after taking a lunch break and there was likely a background scan while I was out.

JoeAlbahari

Do you have third-party antivirus software installed?

JeffMercado

Yes, work laptop so I don't have much control over that. Trend Micro. Scans are scheduled to run Mondays at noon so it wouldn't have been running at the time. But I do have the LINQPad install directories to be excluded from scans, I'm not sure if that includes its realtime scanner.

Winlin

The entire codebase is now WPF/XPF.

@JoeAlbahari is it Avalonia XPF (as for linqpad 8 macos)? If so - any chance you provide a Linux version as this is now supported with latest Avalonia/net10?

Thanks

JoeAlbahari

@Winlin There are a couple of blocking issues for Linux support:

• Low demand
• No embedded web browser support yet in XPF/Avalonia

Winlin

• No embedded web browser support yet in XPF/Avalonia

wasn't aware that parts are running in the webview ... but yes, that is currently not working well on linux. Thanks for your answer

sgmoore

I seem to have lost most of my autosaved files and they appear to be really gone (not just in another session folder)

I got prompted to restart to installed a new version (9.3.21) and on restart was immediately told me that there was another new version (9.3.22) and I restarted to install it.

The log for today has a lot of errors.

9.3.21 (X64) 2025-11-18T08:02:32.4546043+00:00 ArgumentException - You must specify a file path if includeHeader is null

Source=LINQPad.Runtime

-LINQPad.QueryCore Boolean WriteTo(System.IO.StreamWriter, System.String, System.Nullable`1[System.Boolean], Boolean, System.String[], LINQPad.NuGetPackageRef[], Boolean) offset: 0x22
-LINQPad.AutoBackup+AutoBackupToken Void Save(Boolean, Boolean, Int32, Int32) offset: 0x129

9.3.21 (X64) 2025-11-18T08:02:32.4757967+00:00 ArgumentException - You must specify a file path if includeHeader is null

Source=LINQPad.Runtime

-LINQPad.QueryCore Boolean WriteTo(System.IO.StreamWriter, System.String, System.Nullable`1[System.Boolean], Boolean, System.String[], LINQPad.NuGetPackageRef[], Boolean) offset: 0x22
-LINQPad.AutoBackup+AutoBackupToken Void Save(Boolean, Boolean, Int32, Int32) offset: 0x129

9.3.21 (X64) 2025-11-18T08:02:32.5422438+00:00 About to call PatchCaller

Plus about 25 more of the ArgumentException error and finally

9.3.22 (X64) 2025-11-18T08:03:58.6653150+00:00 About to call PatchCaller

JoeAlbahari

My apologies. There was a glitch in 9.3.21 that could cause this. It's been fixed in the subsequent build.

Hegi

@JoeAlbahari said:
When this delay occurs, does the clipboard operation succeed? Can you paste the text into another application besides LINQPad?

Sorry for the late reply; I got side-tracked somewhat. While the delay is happening I can't paste anything; anywhere. Like if I copy bbbb to my clipboard, then I type in aaaa to LinqPad and I cut that to the clipboard, I can't paste anything (neither bbbb nor aaaa) in any application. After the cut/copy completes in LinqPad and the delay is done; I can paste the text from LinqPad.

Very odd experience. I was able to capture it with notepad and the context menu. Note how the paste option in notepad is blank when I right click there a second time:

craig04

There are a couple of blocking issues for Linux support ... Low demand

Well then allow me to express my vehement support of a full Linux version of this great software. I'm currently a paid customer, and I'd GLADLY pay an extra fee to get a Linux version, as I am currently switching to being a full-time Linux user (having been a devout Windows user ever since I got my first computer as a teen in 1996, I am NOT happy with the direction Microsoft is taking Windows in these days, and I no longer feel I can trust that my files and personal data are safe with them). Problem is, I still need to support many LINQPad scripts, both for myself personally and for work. Thx.

Edit: Heck, I'd pay for a whole new license; in advance, if you want to crowdfund it.