.NET: How to have background thread signal main thread data is available?

Question

What is the proper technique to have ThreadA signal ThreadB of some event, without having ThreadB sit blocked waiting for an e

Answer 1

You can use an AutoResetEvent (or ManualResetEvent). If you use AutoResetEvent.WaitOne(0, false), it will not block. For example:

AutoResetEvent ev = new AutoResetEvent(false);
...
if(ev.WaitOne(0, false)) {
  // event happened
}
else {
 // do other stuff
}