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Is it possible to run LINQPad with Mono (Mac)

Posted by: admin November 30, 2017 Leave a comment


I have installed Mono 2.6.7 in Snow Leopard and would like to run LINQPad. I’ve gotten LINQPad (v2.21) to start but immediately get a FileNotFoundException. Has anyone been able to run it successfully?

I assume the exception is because it’s trying to read/write a config file or something but hopefully there is some workaround.


Building Mono with “Olive” (required for WPF):

In Terminal:

svn co svn://anonsvn.mono-project.com/source/trunk/olive
cd /Users/(your user name)/olive
./configure --prefix=/Users/(your user name)/olive --with-glib=embedded
make install

Now navigate in Finder to:

/Users/(your user name)/olive/lib/mono/gac

Copy those folders (ex: PresentationCore, PresentationFramework) into:

(Current Mono version is 2.6.7 but this obviously may be different)

Edit: Unfortunately, now I’m getting this when running LINQPad:

WARNING **: The class
could not be loaded, used in LINQPadcould not be loaded, used in LINQPad

Edit: Xamarin Workbooks recently released 1.0 (https://developer.xamarin.com/workbooks/) and is the closest I’ve seen to LINQPad on macOS.

Edit (September 2017):
This is still speculative!

Running most Windows applications (including GUI apps) might be possible with Docker and Windows Subsystem for Linux (WSL):

Animated demo of cmd.exe running on Ubuntu

See the blog post at https://blog.jessfraz.com/post/windows-for-linux-nerds/ for a detailed walkthrough.


LINQPad doesn’t work in Mono primarily because it relies on ActiPro’s SyntaxEditor which does some Win32 interop. LINQPad itself also does some interop.

An early prototype of LINQPad used a TextBox instead of a syntax editor – this might be what was tested against Mono.


I also wanted to get LINQpad running under OSX and have found after using the above linked 0.92 version from Joe that it does not seem possible.

Although the app starts up under mono and displays the familiar LINQPad screen if you try and run any query it simply crashes and disappears.

Reason being is that there seems to be some use of a WebBrowser control in that LINQPad version and according to the errors displayed in the terminal window it would appear that libgluezilla is required. From doing some digging about libgluezilla I’ve seen a few replies from Mono devs that it isn’t and won’t be available for mac, which is a shame.

Error for reference:

mono linqpad.exe
libgluezilla not found. To have webbrowser support, you need libgluezilla installed


If you look at the Mono documentation, it says that LINQPad is one of the applications they use to test their WinForms implementation:

Winforms Samples – Mono

That said, I have to imagine that they’ve been able to get it to work themselves.