title: Windows Workflow Custom Sequence Activity
body: <p>I'm working with Windows Workflow 4, and I need to create a C# activity that, basically, inherits from the Sequence activity.  I want it to look just like the Sequence activity, so a user can drag and drop other activities onto it from the designer.  But, it acts differently in the code (maybe I want to run them in a different order, or do special actions between each one, it shouldn't matter).</p>
  
  <p>How can I do this?  I see a <a href="https://stackoverflow.com/questions/2208190/windows-wf-3-5-how-to-drop-activity-on-custom-composite-activity-in-workflow">similar question was asked</a> about this, and only one person responded with a suggestion that only applies to Windows Workflow 3.  In version 4, a sequence activity can't be inherited from, to say the least.</p>
  
  <p>This doesn't seem like a very far fetched concept.  A Sequence activity is provided as a built in activity. So, it seems logical that it should be reproducible, or at least inheritable, so I can have a customized version of a Sequence activity.</p>
  
  <p>Anyone have any ideas?</p>