title: C#: copy dependency of dependency when building project
body: <p>I have a C# project (e.g. Project.exe) which depends on a.dll, and a.dll depends on b.dll.</p>
  
  <p>When I build Project.exe, a.dll gets built and copied into the output folder for Project.exe - but b.dll does not get copied over into the output folder.</p>
  
  <p>How can I get both a.dll AND b.dll copied into Project.exe's output folder when Project.exe gets built?</p>
  
  <p>EDIT: I think it is important to point out, that I want to keep Project.exe and b.dll decoupled from each other. That is the point of having a.dll in the first place.</p>