UI Freeze while transmitting via RS232

[chanseng738]

Hi all,
I'm having a problem, my UI freeze while I transmit and receiving data thru RS232. The program works just that the UI freeze for a while. It return to normal after the Tx/Rx completed in RS232. I wonder why. I try many things like Update the UI thru invalidata and updatewindow method in the function that sends the data but it doesnt help at all. Pls help, tq.

[VictorN]

You should move your code for RS232 communications to the secondary thread(s)

[MrViggy]

Ditto. You need to create a worker thread for the transmitting/receiving of the data.

Viggy