title: Outlook Add-In and Windows Form collaboration
body: <p>I'm developing an outlook add in that collaborates with SharePoint. I've added a new item to the Outlook add in: a Windows Form. When a button is being clicked in the Windows Form, I want to perform an action with Outlook, like this:</p>
  
  <pre><code>Outlook.NameSpace outlookNameSpace = this.Application.GetNamespace("MAPI");
  </code></pre>
  
  <p>This isn't working, because I'm in the Windows Form instead of in the Outlook Add In. I'm not sure how to let those though collaborate.</p>