C#编写简易的上位机

标题C#编写简易的上位机

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代码如下：

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 chuankou1
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){for (int i = 1; i < 20; i++){comboBox1.Items.Add("COM" + i.ToString());}comboBox1.Text = "COM1";//串口号默认值comboBox2.Text = "4800";//波特率默认值//很重要serialPort1.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);//必须手动添加}private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)//串口数据接收事件{if (!radioButton3.Checked)//如果接收模式为字符模式{string str = serialPort1.ReadExisting();//字符串方式读textBox2.AppendText(str);//添加内容}else//如果接收模式为数值模式{byte data;data = (byte)serialPort1.ReadByte();//此处需要强制类型转换，将int类型数据转换为bytestring str = Convert.ToString(data, 16).ToUpper();//转换为大写十六进制字符串textBox2.AppendText("0x" + (str.Length == 1 ? "0" + str : str) + " ");//空位补"0"}}private void button1_Click(object sender, EventArgs e){try{serialPort1.PortName = comboBox1.Text;serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text);//十进制数据转换serialPort1.Open();button1.Enabled = false;//打开串口按钮不可用button2.Enabled = true;//关闭串口}catch {MessageBox.Show("端口错误，请检查串口", "错误");}}private void button2_Click(object sender, EventArgs e){try{serialPort1.Close();//关闭串口button1.Enabled = true;//打开串口按钮可用button2.Enabled = false;//关闭串口按钮不可用}catch (Exception err){throw;}}private void button3_Click(object sender, EventArgs e){byte[] Data = new byte[1];//只存储一个字节if (serialPort1.IsOpen)//判断串口是否打开，如果打开就执行下一步操作{if (textBox2.Text!=" "){if (!radioButton1.Checked)//如果是字符模式{try{serialPort1.WriteLine(textBox2.Text);//写数据}catch (Exception err){MessageBox.Show("窗口数据写入错误", "错误");//出错提示serialPort1.Close();button1.Enabled = true;//打开串口按钮可用button2.Enabled = false;//关闭串口按钮不可用}}else{for (int i = 0; i < (textBox2.Text.Length - textBox2.Text.Length % 2) / 2; i++){Data[0] = Convert.ToByte(textBox2.Text.Substring(i * 2, 2), 16);serialPort1.Write(Data, 0, 1);//循环发送（如果输入字符为0A0BB，则只发送0A,0B）}if (textBox2.Text.Length % 2 != 0)//剩下一位单独处理{//Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length - textBox2.Text.Length % 2, textBox2.Text.Length % 2), 16);Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length - 1,1), 16);serialPort1.Write(Data, 0, 1);//发送}}}}}//private void textBox1_TextChanged(object sender, EventArgs e)//{//    textBox1.ScrollToCaret();//将滚动条调至最下//}}
}

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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 chuankuo2
{public partial class Form1 : Form{//定义一些常量const byte DeviceOpen1 = 0x01;const byte DeviceClose1 = 0x81;const byte DeviceOpen2 = 0x02;const byte DeviceClose2 = 0x82;const byte DeviceOpen3 = 0x03;const byte DeviceClose3 = 0x83;byte[] SerialPortDataBuffer = new byte[1];public Form1(){           InitializeComponent();//窗口构造}private void button1_Click(object sender, EventArgs e){if (serialPort1.IsOpen)//如果串口是打开{try{serialPort1.Close();//关闭串口}catch {                 }button1.Text = "打开串口";//显示打开串口}else//如果串口关闭{try{serialPort1.PortName = comboBox1.Text;//端口号serialPort1.Open();//打开端口button1.Text = "关闭串口";}catch {MessageBox.Show("串口打开失败", "错误");}}}private void Form1_Load(object sender, EventArgs e)//点击屏幕空白处{SearchAndAddSerialToComboBox(serialPort1, comboBox1);//调用扫描函数}private void SearchAndAddSerialToComboBox(SerialPort MyPort,ComboBox MyBox)//定义扫描函数{                                           //将可用端口号添加到ComboBox//string[] MyString = new string[20];//定义20个string类型的数组string Buffer; //缓存MyBox.Items.Clear();//清空ComboBox内容//int count = 0;for (int i = 1; i < 20; i++)//循环{try{Buffer = "COM" + i.ToString();MyPort.PortName = Buffer;MyPort.Open();//MyString[i - 1] = Buffer;//MyString[count] = Buffer;MyBox.Items.Add(Buffer);MyPort.Close();//count++;}catch {//count--;}}//MyBox.Text = MyString[0];//初始化}private void WriteByteToSerialPort(byte data)//单字节写入串口{byte[] Buffer = new byte[2] { 0x00, data };//定义数组if (serialPort1.IsOpen){try{serialPort1.Write(Buffer, 0, 2);//写数据}catch {MessageBox.Show("串口数据发送出错,请检查", "错误");}}}private void button3_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceOpen1);}private void button4_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceClose1);}private void button5_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceOpen2);}private void button6_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceClose2);}private void button7_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceOpen3);}private void button8_Click(object sender, EventArgs e){WriteByteToSerialPort(DeviceClose3);}private void button2_Click(object sender, EventArgs e){SearchAndAddSerialToComboBox(serialPort1, comboBox1);//扫描功能的实现}}
}

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