Well, to be able to update the chart, as is true of any Winform UI, you must do it on the main UI thread (that is, the thread on which the UI is created). Now all operations on the main thread will be sequential, and as such, though you send as many update request as you want from the background thread, they will all be executed only once the previous one is finished on the main thread.
Imported from legacy forums. Posted by André (had 2719 views)