How to start/stop gps.GpsMove?

[tictoc]

Hi,

i do have one main thread with the windows forms ui and a start/stop button.
I do start a gps.GpsMove in a separate task or thread (tried both). I do use CancelMoveTo() to stop moving.
But it works only one time. If i try to start the next gps.GpsMove nothing happens.

Any idea what i may have missed?

/tictoc

 

[alcor75]

Hi.
Are you aborting the thread? is it background? join?

trowing some bone, not really idea of what is going on there...

 

[Will]

U can abort other thread, or use gps.SuspendGpsMove();

 

[tictoc]

Everything works fine the first time i do start and stop. But after that i cannot start a gpsMove again.

 

[alcor75]

try .Abort the thread that start the gps..

 

[Will]

        Thread _threadMove;

        private void GoToPoint(string point)
        {
            StopThreadMove();
            _threadMove = new Thread(() =>
            {
                while (!_gps.GpsMove(point))
                    Thread.Sleep(100);
            });

            _threadMove.Start();
        }

        private void StopThreadMove()
        {
            if (_threadMove != null &&
                _threadMove.IsAlive &&
                _threadMove.ThreadState != ThreadState.Stopped)
            {
                _threadMove.Abort();
                _threadMove.Join();
            }
        }

now, bind your Start button to GoToPoint(name) method, and your Stop button to StopThreadMove method.. it will work

 

[tictoc]

Thanks a lot for this example. I will try it out.
What i have not used so far is the .Join()

And i do start GpsMove whithout such a while loop.
Can you explain why we do need it?

 

[tictoc]

Based on this code i have rewritten mine and now it works fine. Thanks again!

What i did need to add is "CancelMoveTo()". Without this i do keep running up to the next gps point before the movement stops.

 

[Will]

Can you explain why we do need it?

Just an extra to ensure the code after that line will execute only after toon reach destination.