title: What QuickBooks SDK 13.0 namespace is required to instantiate QBSessionManager?
body: <p>I have downloaded QuickBooks SDK 13.0 and am trying to build a very simple C# application that connects to <code>QuickBooks</code> via <code>QBSessionManager</code>.</p>
  
  <p>I am using Visual Studio Express 2013.  I have the following lines of code in the Load function of my very simple Form.</p>
  
  <pre><code>QBSessionManager sessionManager = new QBSessionManager();
  sessionManager.OpenConnection("", "Application");
  </code></pre>
  
  <p>When I try to compile, I get</p>
  
  <blockquote>
    <p>The type or namespace name 'QBSessionManager' could not be found (are you missing a using directive or an assembly reference?)"</p>
  </blockquote>
  
  <p>I see lots of sample code that starts with instantiating <code>QBSessionManager</code>, but nothing that identifes the namespace or reference I need to specify.</p>
  
  <p>Am I missing something really obvious?</p>