As far as I understand backgroundworker in .Net runs on a separate threat than in GUI. And Thread.Sleep is not recommended since it freezes the GUI.
Now if one uses Thread.Sleep inside backgroundworker's DoWork, would GUI freeze or this time Sleep will only sleep the BW's thread? Is it still not recommended?
(I tried to give 1 second pauses inside DoWork by Thread.Sleep(1000) seems it doesnt interfere with GUI. Is there another way to give pause inside BW rather than Thread.Sleep? await Task needs sync method which BW is not:()
Now if one uses Thread.Sleep inside backgroundworker's DoWork, would GUI freeze or this time Sleep will only sleep the BW's thread?
Thread.Sleep, like all other methods, runs on the current thread. So Thread.Sleep causes the current thread to sleep. If it's called from the BGW's DoWork, then it will cause the BGW's thread to sleep.
Is there another way to give pause inside BW rather than Thread.Sleep?
No, but you could replace the BackgroundWorker completely with Task.Run, and then you could use await Task.Delay instead of Thread.Sleep.