Is Print() involed with threading?

[ETFVoyageur]

I have the following code:

            if (message.Length != 0) s += "\n" + leadingTabs + message;
            Print(s);

"s" is a local string variable. The second line (Print(s) just got a threading exception:

ThreadAbortException was unhandled
An unhandled exception of type 'System.Threading.ThreadAbortException' occurred in WindowsBase.dll

This is the first time I have seen this exception, so I doubt I can supply a test case. It may be happening now because I am using the VS debugger and that alters timing.

Am I doing anything wrong? Do I need to take any steps to ensure that Print() statements are thread safe?

--EV

[NinjaTrader_DaveI]

As far as I have seen, this should not be an issue. If it is not reproducible outside of the VS Debugging scenario, then I would say that you are probably correct in identifying this as the cause. If you can reproduce this without VS Debugging attached, please let me know.

As a test, you might try nesting the Print statement inside Owner.Dispatcher.Invoke to ensure it's called on the main UI thread of the calling object, but as I noted, this should not be a requirement under normal circumstances.

[ETFVoyageur]

I have now seen it repeatedly in VS, but only when I put a breakpoint nearby. Otherwise no problem running the code in VS. It sure looks as if either VS has a bug, or else VS alters something enough to tickle an NT bug. I've never seen the problem outside of VS, and then only when I have a nearby breakpoint.

--EV