title: WPF Keep column sorting with Datagrid
body: <p>I have several datagrid where I need to update the informations. Things is, since more than one person works on the system at the same time, the datagrid need to be refreshed on a regular basis. When I refresh, I lose the sorting that user had. </p>
  
  <p>Is there a way to keep it?</p>
  
  <p>thanks</p>