How to realize Serial Communication based on SerialPort Class in C #

This article mainly explains "how to realize serial communication based on SerialPort class in C #". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "C # based on SerialPort class how to achieve serial communication" it!

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Form Settings:

Using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.IO.Ports;using System.Threading;using System.Windows.Forms;namespace SerialCommunication {public partial class Form1: Form {System.Threading.SynchronizationContext m_SyncContext = null; SerialPort serialPort = null; ToHexadecimalString toHexadecimalString = new ToHexadecimalString () Public Form1 () {m_SyncContext = SynchronizationContext.Current; InitializeComponent ();} / / Data initialization private void Form1_Load (object sender, EventArgs e) {string [] ports = SerialPort.GetPortNames (); SerialPortNumber.Items.AddRange (ports); SerialPortNumber.SelectedIndex = SerialPortNumber.Items.Count > 0:-1 BaudRateCom.Text = "9600"; / / Set parameters CheckBitCom.Text = "None"; DataBitCom.Text = "8"; StopBitCom.Text = "One" } / / Send data private void Send_Click (object sender, EventArgs e) {try {/ / Send data and handle exceptions byte [] bytes = new byte [SendMessage.Text.Length]; bytes = Encoding.Default.GetBytes (SendMessage.Text); serialPort.Write (bytes, 0, bytes.Length) } catch (Exception error) {MessageBox.Show (error.Message);}} / Byte to hexadecimal string / / Clear data private void Clear_Click (object sender, EventArgs e) {ReceiveMessage.Text = "" } private void Open_Click (object sender, EventArgs e) {string portName = SerialPortNumber.Text; int buadRate = int.Parse (BaudRateCom.Text); Parity parity = 0; switch (CheckBitCom.Text) {case "None": parity = Parity.None; break Case "Odd": parity = Parity.Odd; break; case "Even": parity = Parity.Even; break; case "Mark": parity = Parity.Mark; break; case "Space": parity = Parity.Space; break } int dataBit = int.Parse (DataBitCom.Text); StopBits stopBits = 0; switch (StopBitCom.Text) {case "None": stopBits = StopBits.None; break; case "One": stopBits = StopBits.One; break Case "Tow": stopBits = StopBits.Two; break; case "OnePointFive": stopBits = StopBits.OnePointFive; break } try {if (Open.Text = = "Open") {serialPort = new SerialPort (portName, buadRate, parity, dataBit, stopBits); serialPort.Open (); Open.Text = "Close" } else if (Open.Text = = "Close") {serialPort.Close (); Open.Text = "Open";}} catch (Exception errror) {MessageBox.Show (errror.Message) } serialPort.DataReceived + = onDataReceived;} private void onDataReceived (object sender, SerialDataReceivedEventArgs e) {try {Byte [] bytes = new byte [serialPort.BytesToRead]; serialPort.Read (bytes, 0, serialPort.BytesToRead) M_SyncContext.Post (new SendOrPostCallback ((obj) = > {ReceiveMessage.AppendText (Encoding.Default.GetString (bytes));}), bytes);} catch (Exception error) {MessageBox.Show (error.Message) At this point, I believe you have a deeper understanding of "how to realize serial communication based on SerialPort class in C #". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!