title: Tortoise - is it possible to ignore new folder before committing it?
body: <p>I just added a class library project to my .NET solution. When I built it, it created the <code>bin</code> and <code>obj</code> folders, which I want to exclude from version control.</p>
  
  <p>However, Tortoise won't let me ignore the folders before the first commit. It gives the following message.</p>
  
  <blockquote>
    <p>Cannot add bin to the ignore list!</p>
  </blockquote>
  
  <p>I have to check the whole lot in, and then choose <code>Delete and add to ignore list</code> for the two folders.</p>
  
  <p>How do I prevent them being checked in at all, and ensure Tortoise knows to ignore them?</p>