In my gui, i need to perform two task simultaneous.One is send a file via serial port communication and other is display the status of communication on GUI as static text .Both done in a single button control.For this whether i need to create separate thread?
I try this without threading.First i send the some fixed size of file and then show the status and continue the same for full file size.But when i open other application like calculator,the status display going hangs.but the file transfer is progressed.

Help required