title: Executing WorkflowInstance more then once
body: <p>If I have have a <code>WorkflowInstance</code> can I executed twice in a row?</p>
  
  <pre><code>WorkflowInstance instance = workflowRuntime.CreateWorkflow(typeof(...));
  instance.start();
  instance.start();
  </code></pre>
  
  <p>When I do this I get and exception telling me that I don't have a persistence service configured. However my question is: after I execute the <code>WorkflowInstance</code> once can a instance be run a second time, or dos it become unusable? Do I have to create another instance everytime I want to executed?</p>