Publish single file doesn't load the leptonica dll (Exception has been thrown by the target of an invocation)

[w4po]

Hello,
I can't get my app to work if I publish it as a single file using the visual studio Publish tool.

I think the issue is somehow can't locate the runtime folder (x86, x64),
even though I made sure that both of them and the tessdata folder are located in the same folder as the executable.

BTW, The app works just fine if not built as a single file.

To reproduce the issue:

Either build as a single file or move the runtime files (leptonica-1.82.0.dll, tesseract50.dll) anywhere other than the (x86, x64) folder.

How to fix:

I think if you allow specifying a custom location for the runtime folders (x86, x64) that should fix it.

Stack Trace:

at System.Reflection.ConstructorInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, Object[] args)
at InteropDotNet.InteropRuntimeImplementer.CreateInstance[T]()
at Tesseract.Interop.LeptonicaApi.Initialize()
at Tesseract.Interop.TessApi.Initialize()
at Tesseract.Interop.TessApi.get_Native()
at Tesseract.TesseractEngine..ctor(String datapath, String language, EngineMode engineMode, IEnumerable`1 configFiles, IDictionary`2 initialOptions, Boolean setOnlyNonDebugVariables)
at Tesseract.TesseractEngine..ctor(String datapath, String language, EngineMode engineMode)

[w4po]

I found a fix:

TesseractEnviornment.CustomSearchPath = Environment.CurrentDirectory;

But you still have to put the x86 and x64 in the same folder of your executable.

[charlesw]

You can set the search path to anything however you do still need to deploy the tesseract and leptonica DLLs these can't be bundled into a single managed exe as they're native DLLs not dotnet.

…

On Thu, 23 Feb 2023, 08:05 w4po, ***@***.***> wrote: I found a fix: TesseractEnviornment.CustomSearchPath = Environment.CurrentDirectory; But you still have to put the x86 and x64 in the same folder of your executable. — Reply to this email directly, view it on GitHub <#636 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAB7HSHX7EG6L2W6CCMHZMDWYZ5SJANCNFSM6AAAAAAVEU2SAE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[benquan]

Charles, On a .NET application these files get added and bundled to the project automatically. On framework you must add them manually. Is there a way to add them automatically like in .NET?