title: WPF Datagrid: updated too often - selection gets lost
body: <p>I have a Datagrid with a data Binding to the data. I implemented the interface INotifyPropertyChanged and it works pretty good.</p>
  
  <p>One Thing I noticed was, when the user now selects a row in the datagrid and the data is updated, the selection is lost. Since the update occurs frequently, the user can't really select/change something.</p>
  
  <p>My first approach is to reduce the updates to a minimum - still that's at least one update per second. So every second the selection is lost.</p>
  
  <p>Is there a way to keep the user selection despite of the updates? How do you guys deal with that?</p>
  
  <p>Thanks in advance for any input! </p>