How to reference/store assemblies from relative path

I have asked the question again ,because in the previous post (http://www.c-sharpcorner.com/forums/how-to-referencestore-assemblies-from-relative-path)  reply was not working for me & there was no option to add the comment or edit the post. 

How can i changes this logic to store/reference the dll's from relative path.

. I am new to dotnet & windows application .

The above application will be installed in client machine in Windows 10 OS & the dll's will be copied to program files application path , Since users have permission issues for storing the dll's with this path. We want to change the location of dll's to appdata path( \User\xxxx\AppData ) so that with normal account application can be installed.

Can it be possible to have logic which is generic & to reference the assembly from generic path & not to hard code the path of the assembly in app config .