The problem with messages in c #, how to receive messages from multiple message sources to determine?

迷途精灵

I have encountered the same problem as you before, consider using the class method to solve it, instantiate a class, a class is a serial port

hyukio35

Let's take a look at the classes I use
 class threadCom
    {
        private string _com;
        private IntPtr _handle;

        public threadCom ()
        {

        }

        public threadCom (string com, IntPtr handle)
        {
            this._com = com;
            this._handle = handle;
        }

        private void openCom ()
        {
             operateCom.OpenComm (_com, _handle);
        }

        public void startThread ()
        {
            ThreadStart thr_star_fun = new ThreadStart (openCom);
            Thread fthread = new Thread (thr_star_fun);
            fthread.Start ();
        }

    }
Called in the main function
  foreach (string s in avaliableEquipment) where s is com1 and com2
            {
              threadCom tCom = new threadCom (s, this.Handle);
                tCom.startThread ();
            }
But I still can't receive the first com port message, I can only receive com2, I don't know what happened?

hyukio35

Please help

迷途精灵

You will know if you execute it in a single step.Com1 has finished executing com2. Finally, only com2 exists, and com2 covers com1.

hyukio35

So what should I do?

hyukio35

I changed the program to the following or not
  threadCom [] tcom = new threadCom [avaliableEquipment.Length];
            int i = 0;

            foreach (string s in avaliableEquipment)
            {
                tcom [i] = new threadCom (s, this.Handle);
              // threadCom tCom = new threadCom (s, this.Handle);
                tcom [i] .startThread ();
            }

迷途精灵

Put operations on the serial port such as open, close, send, and receive data in a class.Each time a class is instantiated, it is equivalent to generating a serial port, so you can have multiple serial ports to send and receive at the same time.
C # is object-oriented. Use object-oriented thinking to consider problems. A form is also a class. You can instantiate multiple forms. The operations between multiple forms do not affect each other. Right, then you can instantiate Multiple serial ports will not interfere with each other.

hyukio35

Can you tell me more in detail? I still don't quite understand this

hyukio35

I am just a beginner, so I hope everyone can give more detailed instructions, thank you in advance!

hyukio35

Masters please come, brothers are really not broken now.