title: Cannot build my class library on Release, only on Debug
body: <p>I've right clicked the project in Visual Studio and selected properties. Then I changed the Build configuration to Release. But even after hitting <code>Control+Shift+B</code> to build my library, I still find the /Release/ folder empty.</p>
  
  <p><img src="https://i.stack.imgur.com/uZQlH.png" alt="enter image description here"></p>
  
  <p>If I close the properties window and re open it, I see the option has switched back to <code>Active(debug)</code></p>
  
  <p>What am I missing?</p>