Code explanation for C # read COM port

C # Read COM PORT

An example of MSDN is referenced:

Https://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx

Or do not work, you need to add this line of code:

Myserialport.dtrenable = true;

Description of the Dtrenable property:

Gets or sets a value that enables the Data Terminal ready (DTR) signal during serial communication.

Demo Code:

public class Comportlistener {private static ILog logger = Logmanager.getlogger (typeof (Comportlistener)); #region Single Instance Private Comportlistener () {} static Comportli                Stener () {} private static Comportlistener _instance = new Comportlistener ();                 public static Comportlistener Instance {get {return _instance;}}                #endregion public action<string> ondatareceived;                            public void Serialportlistenasync () {if (ondatareceived = = null) {            throw new InvalidOperationException ("must set callback [ondatareceived] first."); } task.run (() = {var myserialport = new SerialPort (Configurationmana Ger.                appsettings["Com_port"]);                Myserialport.baudrate = 9600; Myserialport.parity = Parity.none;                Myserialport.stopbits = Stopbits.one;                Myserialport.databits = 8;                Myserialport.handshake = Handshake.none;                Myserialport.rtsenable = true;                Myserialport.dtrenable = true;                Myserialport.readtimeout = 500;                    myserialport.errorreceived + = (sender, args) = {Console.WriteLine ("##### #error"); Console.WriteLine (args.                EventType);                };                Myserialport.open (); Logger.                                Info ("# # #COM PORT opened ...");                                            while (true) {try {                        String message = Myserialport.readline ();                        ondatareceived (message);                    Task.delay (500);               } catch (TimeoutException ex)     {//do Nothing}}        }); }    }

The above is the C # read the code of the COM port in detail, more relevant content please pay attention to topic.alibabacloud.com (www.php.cn)!

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