Inconsistent AssemblyVersion of Microsoft.Extensions.Logging.Abstractions between .NET and .NET462

[newbienewbie]

The latest stable Microsoft.Extensions.Logging.Abstractions.8.0.2.nupkg has an AssemblyVerion of 8.0.0.0 for .NET8 while attributing anther AssemblyVersion (8.0.0.2) for .NET462.)

This may lead confusing runtime error in some scenario.

Background

• I have a .NET8.0 library project A that uses some 3rd-party lagecy technology and must targets .NET472. This project has a referece on Microsoft.Extensions.Logging.Abstractions.8.0.2.nupkg.
• I have another .NET8.0 App B that refereces the above project A and also other .NET projects. The other projects also references the same Microsoft.Extensions.Logging.Abstractions.8.0.2.nupkg
• The App B compiles. However it throws at runtime due to the mismatch Assembly version :

unable to load one of requested types,
unable to load file or assembly "Microsoft.Extensions.Logging.Abstractions, Version=8.0.0.2"

Troubleshooting

The version 8.0.0. is suspicious. After inspecting the dlls in the debug folder, I find this dll AssemblyVersion is inconsistent between .NET and .NET462.

• download the Microsoft.Extensions.Logging.Abstractions.8.0.2
• unzip the nupkg and change directory to the lib/ folder
• disassemly the dll under the net8.0/ folder and we can get the AssemblyVersion is 8.0.0.0
• disassemly the dll under the net6.0/ folder and we can get the AssemblyVersion is 8.0.0.0
• disassemly the dll under the net462/ folder and we can get the AssemblyVersion is 8.0.0.2

So I guess here's the reason why my app B crash at runtime:

• The project A, which targets net472, use the info that the Microsoft.Extensions.Logging.Abstractions.dll is coming from lib/net462/, and thus believe that the AssemblyVersion is 8.0.0.2
• The project B, which targets net8.0, finally copies the dll from lib/net8/, however, this dll's AssemblyVersion is 8.0.0.0 . And finally, it throws and complains that there's no assembly "Microsoft.Extensions.Logging.Abstractions, Version=8.0.0.2".

Is it better to make the AssemblyVersion the same regardless of .NET or .NET Framework ?

[tarekgh]

@newbienewbie could you please provide a simple repro project we can look at?

[newbienewbie]

@newbienewbie could you please provide a simple repro project we can look at?

Hi @tarekgh , here's a minimal demo .