I’m using a thread in C# where I’ve set the IsBackground property to true. The thread is running some code in a loop until the application closes. When the application is closed the thread also stops executing (because I’ve set IsBackground = true).
How does the application kill the thread? It seems that it doesn’t do it by calling abort because I don’t get a ThreadAbortException. Does it happen behind the scenes? I’d like to do some rollback in my finally block of the loop.
I know I could just call abort on the thread myself, but I want to know how the application closes my background thread and if I can react on it from inside the thread. I know I can subscribe to the Application.ApplicationExit event, but I’m running this code in both a service and a winform and I’d prefer catching an exception inside the loop so I’m able to rollback in the finally statement.
It does, the CLR has two ways to abort a thread. The “normal” way, invoked through Thread.Abort(), the thread can see a ThreadAbortException. But there’s also a rude abort, works the same way. But minus the TAE and no finally blocks execute. You can’t observe it.