本篇内容主要讲解“C#基于SerialPort类怎么实现串口通讯”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“C#基于SerialPort类怎么实现串口通讯”吧!
最终效果
窗体设置：
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 ? 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); } } }}到此，相信大家对“C#基于SerialPort类怎么实现串口通讯”有了更深的了解，不妨来实际操作一番吧！这里是编程网网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
