title: MS Expression Blend: Sketchflow - Populating a sub datagrid with data upon selecting a specific row of a master datagrid?
body: <p>I've recently started using Expression Sketchflow to prototype some user interface designs. I currently have a master datagrid at the top of the page, which I would like to allow the user when selecting a particular grid row to see a sub-datagrid below be populated with specific data relevant to that specific row of master data.</p>
  
  <p>Could anyone shed some light on the subject!?</p>
  
  <p>Help greatly appreciated.</p>