ANHAdmin.AsyncOperation.AcknowledgeCancel C# (CSharp) Method

        protected void AcknowledgeCancel()
        {
            lock (this)
            {
                cancelAcknowledgedFlag = true;
                isRunning = false;

                // Pulse the event in case the main thread is blocked
                // waiting for us to finish (e.g. in CancelAndWait or
                // WaitUntilDone).
                Monitor.Pulse(this);

                // Using async invocation to avoid a potential deadlock
                // - using Invoke would involve a cross-thread call
                // whilst we still held the object lock.  If the event
                // handler on the UI thread tries to access this object
                // it will block because we have the lock, but using
                // async invocation here means that once we've fired
                // the event, we'll run on and release the object lock,
                // unblocking the UI thread.
                FireAsync(Cancelled, this, EventArgs.Empty);
            }
        }