C#串口中文GBK或UTF-8正常 串口类助手源码 接收单片机整条数据

在串口初始化中设置编码方式：

mycomm.Encoding = System.Text.Encoding.GetEncoding("UTF-8");//根据实际情况选择UTF-8还是GB2312
 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
using System.Windows.Forms.DataVisualization.Charting;
using System.Drawing.Drawing2D;
using SerialCommDemo.Properties;
using System.Threading;
namespace SerialCommDemo
{public partial class Form1 : Form{//public string fileName = "配置.txt";public Form1(){InitializeComponent();}public Boolean SendByte(byte b){if (!mycomm.IsOpen){MessageBox.Show("串口没有打开，请打开串口！");return false;}byte[] package = { b };mycomm.Write(package, 0, package.Length);//向串口发送一包的数据 return false;}public Boolean SendArr(byte[] package){if (!mycomm.IsOpen){MessageBox.Show("串口没有打开，请打开串口！");return false;}mycomm.Write(package, 0, package.Length);//向串口发送一包（18字节）的数据 return false;}public byte[] hexConvertToByteArray(String str){str = str.Replace(" ", "");byte[] b = new byte[str.Length / 2];for (int i = 0; i < str.Length; i = i + 2){b[i / 2] = (byte)Convert.ToInt32(str.Substring(i, 2), 16);   //将十六进制“10”转换为十进制i}return b;}private void button1_Click(object sender, EventArgs e){//this.SendArr(hexConvertToByteArray(textBoxSend.Text));//十六进制mycomm.Write(textBoxSend.Text); //字符}private void comm_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e){Thread.Sleep(1000);//这个延时非常重要 等整条数据接收完if (mycomm.BytesToRead > 0){//因为要访问ui资源，所以需要使用invoke方式同步ui。this.Invoke((EventHandler)(delegate{//byte[] bytes = new byte[mycomm.BytesToRead];//mycomm.Read(bytes, 0, bytes.Length);//textBoxRx.Text = "" + System.Text.Encoding.Default.GetString(bytes);textBoxRx.Text=(mycomm.ReadExisting());    //汉字正常了 字符模式//十六进制//byte[] data = new byte[mycomm.BytesToRead];                                //定义缓冲区，因为串口事件触发时有可能收到不止一个字节//mycomm.Read(data, 0, data.Length);//foreach (byte Member in data)                                                   //遍历用法//{//    string str = Convert.ToString(Member, 16).ToUpper();//    textBoxRx.AppendText("0x" + (str.Length == 1 ? "0" + str : str) + " ");//}}));}}private void btnOpen_Click(object sender, EventArgs e){if (mycomm.IsOpen){mycomm.Close();btnOpen.Text = "打开串口";uartStatus();//(false);}else{try{mycomm.PortName = comboBoxPortSelect.Text;mycomm.ReadTimeout = 32;mycomm.Encoding = System.Text.Encoding.GetEncoding("UTF-8");//根据实际情况选择UTF-8还是GB2312mycomm.Open();btnOpen.Text = "关闭串口";//按钮打开uartStatus();//(true);}catch{btnOpen.Text = "打开串口";MessageBox.Show("没有发现串口或串口已被占用！");uartStatus();//(false);}}}private void comboBoxPortSelect_SelectedIndexChanged(object sender, EventArgs e){mycomm.Close();mycomm.PortName = comboBoxPortSelect.Text;btnOpen_Click(null,null); //重新打开}private void uartStatus(){if (mycomm.IsOpen){Settings.Default.comIndex = comboBoxPortSelect.SelectedIndex; //保存上次成功打开的端口Properties.Settings.Default.Save();//使用Save方法保存更改pictureBox1.Image = Properties.Resources.LED_OnR;}elsepictureBox1.Image = Properties.Resources.LED_OffR;}private void Form1_Load(object sender, EventArgs e){textBoxInterval.Text = Settings.Default.interval;string[] ports = SerialPort.GetPortNames();Array.Sort(ports);comboBoxPortSelect.Items.AddRange(ports);if (Settings.Default.comIndex >= ports.Length){//默认选中第一个comboBoxPortSelect.SelectedIndex = 0;}elsecomboBoxPortSelect.SelectedIndex = Settings.Default.comIndex;// btnOpen_Click(null, null);//打开本计算机的串口  //添加事件注册mycomm.DataReceived += comm_DataReceived;}private void timer1_Tick(object sender, EventArgs e){if (mycomm.IsOpen){//timer1.Interval = Convert.ToInt32(this.textBoxInterval.Text);//设置timer1的timer1_Tick实践执行周期为N毫秒this.SendArr(hexConvertToByteArray(textBoxSend.Text));}else{timer1.Enabled = false;}}private void buttonAuto_Click(object sender, EventArgs e){buttonAuto.Enabled = false;timer1.Interval = Convert.ToInt32(this.textBoxInterval.Text);//设置timer1的timer1_Tick实践执行周期为N毫秒timer1.Enabled = true;//设置为truetimer1_Tick实践就会执行，开始计时}private void buttonDoor1_Click(object sender, EventArgs e){textBoxSend.Text = "{\"cmd\":\"control\",\"smartId\":\"6359\",\"smartChannel\":\"1\",\"sensorId\":\"6361\",\"sensorChannel\":\"1\",\"para\":\"1\"}";button1_Click(null, null);}private void buttonDoor2_Click(object sender, EventArgs e){textBoxSend.Text = "{\"cmd\":\"control\",\"smartId\":\"6359\",\"smartChannel\":\"1\",\"sensorId\":\"6362\",\"sensorChannel\":\"3\",\"para\":\"1\"}";button1_Click(null,null);}private void buttonUPSOpen_Click(object sender, EventArgs e){textBoxSend.Text = "{\"cmd\":\"control\",\"smartId\":\"6358\",\"smartChannel\":\"1\",\"sensorId\":\"6437\",\"sensorChannel\":\"1\",\"para\":\"1\"}";button1_Click(null, null);}private void buttonUPSClose_Click(object sender, EventArgs e){textBoxSend.Text = "{\"cmd\":\"control\",\"smartId\":\"6358\",\"smartChannel\":\"0\",\"sensorId\":\"6437\",\"sensorChannel\":\"0\",\"para\":\"0\"}";button1_Click(null, null);}}
}