title: How can I reject all changes in a Linq to SQL's DataContext?
body: <p>On Linq to SQL's DataContext I am able to call SubmitChanges() to submit all changes.</p>
  
  <p>What I want is to somehow reject all changes in the datacontext and rollback all changes (preferable without going to the database).</p>
  
  <p>Is this possible?</p>