Visual Studio Project: How to include a reference for one configuration only?

Question

Env.: VS2008 C# project

I need to build my app for use in 2 different environments. In one of those environments, I need to use a 3rd party DLL assembly.

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Answer 1

Unload the project and open it as .XML

Locate the reference item tag and add a Condition attribute.

For instance:

  
    3.5
  
  
  
  

  

Notice the last reference now has a condition.