title: How do I find all namespaces in my Visual Studio solution?
body: <p>I ask this question because I'm getting a compilation error in my solution:
  'GiftCard' is a 'namespace' but is used like a 'type'</p>
  
  <p>I tried adding a using directive like:
  using GiftCard.Data.Entity;</p>
  
  <p>which is the correct namespace where GiftCard is found, but the error does not go away. When I add the fully qualified name in my code, i.e. GiftCard.Data.Entity.GiftCard</p>
  
  <p>...then the error goes away, and code compiles.</p>
  
  <p>But I'm wondering why the using directive does not work. I don't want to clutter my code with the fully qualified name every time I need to use the type. Somehow the error message is saying that I have GiftCard defined as a namespace somewhere. So how can I find all the namespaces in my solution so that I know where it is defined because I need to either remove or rename the GiftCard namespace.</p>