.NET 7.0 compatibility, Failed to find dll "DlibDotNetNative", for processor architecture AMD64

[gallianne]

Summary of your issue

I got the Following exception at runtime System.Exception: 'Failed to find dll "DlibDotNetNative", for processor architecture AMD64.'
Is there any known limitation on .Net 7.0 ?

Environment

.NET 7.0 on a WPF application running on windows 11 with a x64 build
DlibDotNetNative.dll and DlibDotNetNativeDnn.dll are in [projectFolder]\bin\x64\Debug\net7.0-windows10.0.17763.0\runtimes\win-x64\native and are both x64 dll
DlibDotNet.dll is in [projectFolder]\bin\x64\Debug\net7.0-windows10.0.17763.0

What did you do when you faced the problem?

It crash at runtime as soon as i call a DlibDotNet method

Output:

System.Exception: 'Failed to find dll "DlibDotNetNative", for processor architecture AMD64.'

What did you intend to be?

DlibDotNet seams to work on an empty .NET 7 application but Always crash in my Solution.
I would like know if there is a know limitation with .NET 7.0 x64 build for windows.

Thanks a lot

[Megadino]

I also faced this issue and found that a path where Dlib searches for native assemblies depends on run conditions.

If I have .NET 6 Core Console app, and run it in Debug mode with VS attached or run as stand-alone from CMD, everything works as expected.

But then I have .NET Core desktop WinForms app, and this is where the fun begins. If I run the app stand-alone, all works and Dlib looks for native Dlls in the folder [projectFolder]\bin\x64\Debug\net7.0-windows10.0.17763.0\runtimes\win-x64\native

If I run that desktop Winforms app from VS with the attached debugger, then suddenly, Dlib looks for native DLLs in the folder
[projectFolder]\bin\x64\Debug\net7.0-windows10.0.17763.0\dll\x64

How did I find that - I used the ProcessMonitor app to track all disk activity of my app and saw that it looks for Dlib native DLLs in that weird '\dll\x64' path.

[gallianne]

Thanks @Megadino ! It solved my issue.