Invalidate() - NotSupportedException

Invalidate() - NotSupportedException

• Gane

  This smells like a bug, post a report on the Microsoft Product Feedback Center with code to reproduce it.
  
  

• RCN

  I have re-aranged my code since then, but I remember trying it a few places before posting here.  One of them was in a datareceived event method on a SerialPort object.  I ended up havin to use CreateGraphics to get around it, but playing around tonight found that indeed Update()/Refresh() work now so who knows, but i won't be testing it it back in the serial port thing.  This was before I knew about threads or invoke.
  
  

• ernesto che

  Hi Adiraz,
  
  Note that SerialPort events are handled by a ThreadPool thread so if you need to update any properties for a GUI control, you would need to use Control.Invoke() instead of setting them directly.
  
  Cheers,
  Anthony
  

• PatriotB

  Adiraz,
  
  From which method in your Form are you calling Invalidate() Are you on a different thread Just prior to calling Invalidate(), what does this.InvokeRequired return
  
  
  
  
• Invalidate() - NotSupportedException