It seems that the issue is related to the deployment of the Project5.dll file. Here are some suggestions that may help:
- Make sure that the Project5.dll file is included in the setup project as a file that needs to be installed along with the application.
- Check if the Project5.dll file is being copied to the output folder of Project2 during the build process. You can do this by checking the properties of the reference to Project5.dll in Project2. Make sure that the "Copy Local" property is set to true.
- If Project2 is being built as a class library, try adding the Project5.dll file as an embedded resource in the class library project. This will include the DLL in the compiled output of Project2, which can then be used by Project1.
- You can also try to use a tool like Fusion Log Viewer to help diagnose the issue. Fusion Log Viewer can show you the locations where the .NET runtime is looking for the Project5.dll file, and can help you determine why it is not being found.
- To identify that Project5.dll is a reference of Project2, you can check the references of Project2 in Visual Studio. If Project5.dll is listed as a reference, it means that it is being used by Project2.
I hope one of these suggestions helps you resolve the issue with the deployment of Project5.dll.
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