How do I handle dependency DLLs that aren't referenced by my code but are required to be in the bin?

I'm developing a series of plugins for a 3rd part application, and the vendor gives us all of their plugin assemblies along with some helper assemblies for working with their system.

Our code usually references thes开发者_StackOverflow中文版e helper assemblies, but the their plugin assemblies still need to be copied to the external bin/debug or bin/release directory. Normally I would make this a post-build event on the main project, but since this project is a collection of individual projects with their own dependencies I am not sure what to do.

What are some recommendations (or best practices) for handling this situation in Visual Studio?

Add the DLLs to your project in a folder with a descriptive name (libs, third-party etc...).

Set the Copy to Output Directory property on them (F4) to Copy if Newer or Copy Always.