Stopping thread gracefully

[mce]

I have a thread started using this way, and ThreadFunc keep sending data to a serial port.

   ThreadStart l_startThread = new ThreadStart(ThreadFunc);
            Thread myThread = new Thread(l_startThread);
            myThread.Start();

   
 public void ThreadFunc()    
{

     //writing to com port for as long as it wants
}

My problem is how to stop and restart this thread? I can use myThread.Abort(), but i read that this is not a graceful way to stop a thread.

I tried the following :- (but object disposed exception is thrown) or sometimes my pc application just got hanged when i step through the followings.

myThread.Interrupt();
myThread.Join();

I want to be able to stop and restart the thread above (which send data to COM port constinuously, until the user decided to stop the thread.