为什么一个.net库需要引用其他.net库的依赖关系

Question

I am facing a weird problem. I have multiple .net standard class projects in my solution. There is one .net standard 2.0 class library project called Messaging ( .csproj ) which uses ActiveMQ to push and read data from it. This project reference to Apache.NMS library. Now I have another project called Core ( .csproj ) which references to the Messaging project. During the constructor call of the class inside Messaging project in Core project, I get the error that System could not find Apache.NMS dll. If I add this reference in the Core project then everything works fine but I really do not understand why this is happening. With a pure .net framework thing, I never faced this issue. Separate projects with their own references and working independently. Can anyone help with it? I have added all references from nuget

Answer 1

After lot of research i found the solution of this problem. What was happening is in the bin folder of the .NET framework / standard project the dependent dll of the referenced projects were not getting copied.

Solution for .NET Framework project: Open .csproj file and add below line in the first tag

<RestoreProjectStyle>PackageReference</RestoreProjectStyle>

Solution for .NET Standard / Core project: Open .csproj file and add below line the first tag

<CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>

Now compile the projects and you will see all the required dll's are present in the bin folder. Hope this help someone else who is facing the same issue.