WixToolset distributed iText7 application has "unknown PDFException" error while works fine in VB debug mode

Question

In a VB.net 64x project, I used itext7(installed through Nuget) to save PDF files. Everything works fine in debug mode(VS2022, framwork4.8). Then I made a installation package with WixToolset(version4.0). Installation on PC works well as I can see the exe application file with needed dll files in the same C:\program files\ folder. But when run this installed program, an error "unknown PDFException" happens. I believe I distributed all the necessary dlls as shown below. Can anyone help?

iText.Kernel.dll 
iText.Layout.dll 
iText.IO.dll 
iText.Pdfa.dll 
itext.bouncy-castle-connector.dll 
iText.commons.dll 
itext.bouncy-castle-adapter.dll 
itext.bouncy-castle-fips-adapter.dll

first get all the infoation form the code so add around the code line a try catch , you nee to find the dll thaz is missing good chnaces that they are in the debud/release folder — nbk
– nbk, Commented Jan 24 at 19:21
I have added all needed dlls. Usually if I missed any, there was a message like some dll is missed, after I added it the error gone. But now the message is "unknown PDFException". Yesterday I had the same error inside VB.net debug mode. After I added bouncy-castle-adapter.dll, it runs well inside VB.net debug without error. But after I used WixToolset to make a installation to distribute, this error came up again. I suspect some dependency is missed, but don't know which one. — user22248229
– user22248229, Commented Jan 24 at 21:01
maybe this will help stackoverflow.com/questions/76260218/… — nbk
– nbk, Commented Jan 24 at 21:22

user22248229 · Accepted Answer · 2025-01-25 01:45:01Z

0

I figured it out adding Microsoft.Extensions.Logging.Abstractions.dll,Microsoft.Extensions.Logging.dll and Microsoft.Extensions.Options.dll solved the problem. I don't know why, but seems iText7 use them for logging or some other purpose. I post here in case someone encounter the similar problem.

answered Jan 25 at 1:45

user22248229

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