c#实现串口通信

小鱼儿 2022-05-27 11:20 336阅读 0赞

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.IO.Ports;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    
    namespace test
    {
        public partial class Form1 : Form
        {
            private SerialPort ComDevice = new SerialPort();
    
            public Form1()
            {
                InitializeComponent();
                init();
            }
    
    
            /// <summary>
            /// 初始化端口
            /// </summary>
            public void init()
            {
    
                btnSend.Enabled = false;
                cmbPort.Items.AddRange(SerialPort.GetPortNames());
                if (cmbPort.Items.Count > 0)
                {
                    cmbPort.SelectedIndex = 0;
                }
                 //波特率
                cmbBaudRate.Items.Add("110");
                cmbBaudRate.Items.Add("300");
                cmbBaudRate.Items.Add("1200");
                cmbBaudRate.Items.Add("2400");
                cmbBaudRate.Items.Add("4800");
                cmbBaudRate.Items.Add("9600");
                cmbBaudRate.Items.Add("19200");
                cmbBaudRate.Items.Add("38400");
                cmbBaudRate.Items.Add("57600");
                cmbBaudRate.Items.Add("115200");
                cmbBaudRate.Items.Add("230400");
                cmbBaudRate.Items.Add("460800");
                cmbBaudRate.Items.Add("921600");
                cmbBaudRate.SelectedIndex = 5;
    
                //数据位
                cmbDataBits.Items.Add("5");
                cmbDataBits.Items.Add("6");
                cmbDataBits.Items.Add("7");
                cmbDataBits.Items.Add("8");
                cmbDataBits.SelectedIndex = 3;
    
                //停止位
                cmbStopBit.Items.Add("1");
                cmbStopBit.SelectedIndex = 0;
    
                //佼验位
                cmbParity.Items.Add("无");
                cmbParity.SelectedIndex = 0;
    
                ComDevice.DataReceived += new SerialDataReceivedEventHandler(Com_DataReceived);//绑定事件
    
            }
    
            private void radioButton3_CheckedChanged(object sender, EventArgs e)
            {
    
            }
    
            /// <summary>
            /// 打开串口
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void btnOpen_Click(object sender, EventArgs e)
            {
    
      
                if (cmbPort.Items.Count <= 0)
                {
                    MessageBox.Show("没有发现串口,请检查线路！");
                    return;
                }
                if (ComDevice.IsOpen == false)
                {
                    ComDevice.PortName = cmbPort.SelectedItem.ToString();
                    ComDevice.BaudRate = Convert.ToInt32(cmbBaudRate.SelectedItem.ToString());
                    ComDevice.Parity = (Parity)Convert.ToInt32(cmbParity.SelectedIndex.ToString());
                    ComDevice.DataBits = Convert.ToInt32(cmbDataBits.SelectedItem.ToString());
                    ComDevice.StopBits = (StopBits)Convert.ToInt32(cmbStopBit.SelectedItem.ToString());
                    try
                    {
                        ComDevice.Open();
                        btnSend.Enabled = true;
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        return;
                    }
                    btnOpen.Text = "关闭串口";
                }else{
                    try
                    {
                        ComDevice.Close();
                        btnSend.Enabled = false;
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    btnOpen.Text = "打开串口";
                }
                cmbPort.Enabled = !ComDevice.IsOpen;
                cmbBaudRate.Enabled = !ComDevice.IsOpen;
                cmbParity.Enabled = !ComDevice.IsOpen;
                cmbDataBits.Enabled = !ComDevice.IsOpen;
                cmbStopBit.Enabled = !ComDevice.IsOpen;
            }
    
            /// <summary>
            /// 发送数据
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            public bool SendData(byte[] data) {
                if (ComDevice.IsOpen)
                {
                    try
                    {
                        ComDevice.Write(data, 0, data.Length);//发送数据
                        ComDevice.Write(txtSendData.Text);
                        return true;
                    }
                    catch (Exception e)
                    {
                        MessageBox.Show(e.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
                else {
                    MessageBox.Show("串口未打开", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                return false;
            }
    
            /// <summary>
            /// 接收数据
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
             private void Com_DataReceived(object sender, SerialDataReceivedEventArgs e){
                 if (ComDevice.IsOpen)
                 {
                     byte[] ReDatas = new byte[ComDevice.BytesToRead];
                     ComDevice.Read(ReDatas, 0, ReDatas.Length);//读取数据
                     this.AddData(ReDatas);//输出数据
                 }
                 else {
                     MessageBox.Show("请先打开串口");
                 }
               
            }
    
            /// <summary>
            /// 添加数据
            /// </summary>
            /// <param name="data"></param>
             public void AddData(byte[] data)
             {
                 if (radioButton1.Checked)
                 {
                     StringBuilder sb = new StringBuilder();
                     for (int i = 0; i < data.Length; i++)
                     {
                         sb.AppendFormat("{0:x2}" + " ", data[i]);
                     }
                     AddContent(sb.ToString().ToUpper());
                 }
                 else if (radioButton4.Checked)
                 {
                     AddContent(new ASCIIEncoding().GetString(data));
                 }
                 else if (radioButton3.Checked)
                 {
                     AddContent(new UTF8Encoding().GetString(data));
                 }
                 else if (radioButton2.Checked)
                 {
                     AddContent(new UnicodeEncoding().GetString(data));
                 }
                 else
                 { }
    
                 lblRevCount.Invoke(new MethodInvoker(delegate
                 {
                     lblRevCount.Text = (int.Parse(lblRevCount.Text) + data.Length).ToString();
                 }));
             }
    
    
            /// <summary>
            /// 输入到显示区域
            /// </summary>
            /// <param name="content"></param>
             private void AddContent(string content)
             {
                 this.BeginInvoke(new MethodInvoker(delegate
                 {
                     if (chkAutoLine.Checked && txtShowData.Text.Length > 0)
                     {
                         txtShowData.AppendText("\r\n");
                     }
                     txtShowData.AppendText(content);
                 }));
             }
            /// <summary>
            /// 发送button事件
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void btnSend_Click(object sender, EventArgs e)
            {
                byte[] sendData = null;
                if(rbtnSendHex.Checked){
                    sendData = strToHexByte(txtSendData.Text.Trim());
                }else if(rbtnSendASCII.Checked){
                    sendData = Encoding.ASCII.GetBytes(txtSendData.Text.Trim());
                }else if(rbtnSendUTF8.Checked){
                    sendData = Encoding.UTF8.GetBytes(txtSendData.Text.Trim());
                }
                else if (rbtnSendUnicode.Checked)
                {
                    sendData = Encoding.Unicode.GetBytes(txtSendData.Text.Trim());
                }
                else {
                    sendData = Encoding.ASCII.GetBytes(txtSendData.Text.Trim());
                }
    
    
                if (this.SendData(sendData))
                {
                    lblSendCount.Invoke(new MethodInvoker(delegate
                    {
                        lblSendCount.Text = (int.Parse(lblSendCount.Text) + txtSendData.Text.Length).ToString();
                    }));
    
                }
                else { 
                    
                }
            }
    
            /// <summary>
            /// 字符串转换16进制字节数组
            /// </summary>
            /// <param name="hexString"></param>
            /// <returns></returns>
            private byte[] strToHexByte(string hexString)
            {
                hexString = hexString.Replace(" ", "");
                if ((hexString.Length % 2) != 0)
                    hexString += " ";
                byte[] returnBytes = new byte[hexString.Length / 2];
                for (int i = 0; i < returnBytes.Length; i++)
                    returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2).Replace(" ", ""), 16);
                return returnBytes;
            }
    
            private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
            {
               
            }
    
            /// <summary>
            /// 清空接收区
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void btnClearRev_Click(object sender, EventArgs e)
            {
                txtShowData.Clear();
            }
    
            /// <summary>
            /// 清空发送区
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void btnClearSend_Click(object sender, EventArgs e)
            {
                txtSendData.Clear();
            }   
        }
    }

![70][]![70 1][]

# visual studio程序打包发布的方法 #

[点击打开链接  
][Link 1]

源代码（内附打包所需InstallShield）

[点击打开链接][Link 2]

[70]: https://img-blog.csdn.net/20180417193102246?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hbm5peF9sZWk=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 1]: /images/20220527/980c3ef8504d405899175a6957717576.png
[Link 1]: https://blog.csdn.net/vivi_and_qiao/article/details/71142253
[Link 2]: https://download.csdn.net/download/mannix_lei/10355688