Detecting when you're in/out of the main thread in Xamarin.iOS
I don't know much about Monotouch, but in iOS +[NSThread isMainThread] might be what you're looking for.
Occasionally when writing multithreaded code, I will put in an assert like this:
NSAssert([NSThread isMainThread], @"Method called using a thread other than main!");
The only problem with NSAssert([NSThread isMainThread], errorDesc) is that you BETTER be in the main thread when making this call. If you happen to be in a secondary thread and make the call then your application crashes! So it's kind of pointless.
It's better just to simply use [NSThread isMainThread] then assess the BOOL value it returns.
You can do like this in Monotouch / Xamarin.ios
if (NSThread.Current.IsMainThread) { //You are in the MainThread } This check is very useful to avoid the error that might occur when trying to modify the UI from a background Thread. Something Like this can be done:
if (NSThread.Current.IsMainThread){ DoSomething();}else{ BeginInvokeOnMainThread(() => DoSomething());}