winform中以下代码可以帮我整合成一个类供给主程序调用。目前只支持5个串口和5个modubusRTU主站的通讯读写后续可能还要增加多个这种设备。using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using EasyModbus;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.Button;
namespace 多个串口类
{
public partial class Form1 : Form
{
static ModbusClient modbusrtu0 = new ModbusClient("COM1");
static ModbusClient modbusrtu1 = new ModbusClient("COM2");
static ModbusClient modbusrtu2 = new ModbusClient("COM3");
static ModbusClient modbusrtu3 = new ModbusClient("COM4");
static ModbusClient modbusrtu4 = new ModbusClient("COM5");
static ModbusClient modbusrtu5 = new ModbusClient("COM6");
static ModbusClient modbusrtu6 = new ModbusClient("COM7");
static ModbusClient modbusrtu7 = new ModbusClient("COM8");
static ModbusClient modbusrtu8 = new ModbusClient("COM9");
static ModbusClient modbusrtu9 = new ModbusClient("COM10");
private Thread modbusThread0;
private Thread modbusThread1;
private Thread modbusThread2;
private Thread modbusThread3;
private Thread modbusThread4;
private Thread modbusThread5;
private Thread modbusThread6;
private Thread modbusThread7;
private Thread modbusThread8;
private Thread modbusThread9;
int[] modbusRtuInt_0=new int[1000];
int[] modbusRtuInt_1 = new int[1000];
int[] modbusRtuInt_2 = new int[1000];
int[] modbusRtuInt_3 = new int[1000];
int[] modbusRtuInt_4 = new int[1000];
SerialPort sPort_0;
SerialPort sPort_1;
SerialPort sPort_2;
SerialPort sPort_3;
SerialPort sPort_4;
SerialPort sPort_5;
SerialPort sPort_6;
SerialPort sPort_7;
SerialPort sPort_8;
SerialPort sPort_9;
private StringBuilder receivedDataBuffer0 = new StringBuilder();
private StringBuilder receivedDataBuffer1 = new StringBuilder();
private StringBuilder receivedDataBuffer2 = new StringBuilder();
private StringBuilder receivedDataBuffer3 = new StringBuilder();
private StringBuilder receivedDataBuffer4 = new StringBuilder();
string sPort0_ReceiveStr = "";
string sPort1_ReceiveStr = "";
string sPort2_ReceiveStr = "";
string sPort3_ReceiveStr = "";
string sPort4_ReceiveStr = "";
// 获取执行程序的根目录路径
public static string rootPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory);
public Form1()
{
InitializeComponent();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
//新建任务流程csv文件
string TaskCSVname = rootPath + "\\" + "串口数据列表.csv";
if (!File.Exists(TaskCSVname))
{
try
{
using (FileStream fs = File.Create(TaskCSVname)) { }
}
catch (Exception ex) { System.Windows.Forms.MessageBox.Show($"创建用户程序 任务流程csv文件时发生错误: {ex.Message}"); }
}
if (File.Exists(TaskCSVname))
{
SaveDataGridViewToCsv(TaskCSVname, dataGridView);
}
}
private void Form1_Load(object sender, EventArgs e)
{
DataGridViewComboBoxColumn comboBoxColumn_COM = dataGridView.Columns[2] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_Baudrate = dataGridView.Columns[3] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_Databits = dataGridView.Columns[4] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_Stopbit = dataGridView.Columns[5] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_Checkbit = dataGridView.Columns[6] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_End = dataGridView.Columns[7] as DataGridViewComboBoxColumn;
DataGridViewComboBoxColumn comboBoxColumn_Agreement = dataGridView.Columns[8] as DataGridViewComboBoxColumn;
string[] portNames = SerialPort.GetPortNames(); // 获取所有可用串口的名字[^3]
string[] Baudrate_strs = { "9600", "19200", "38400", "56000", "115200" };
string[] Databits_strs = { "7", "8" };
string[] Stopbit_strs = { "1","2" };
string[] Checkbit_strs = { "无校验","奇校验", "偶校验" };
string[] End_strs = { "无", "/r", "/n", "/r/n" };
string[] Agreement_strs = { "通用", "Modbus_RTU" };
foreach (string portName in portNames)
{
comboBoxColumn_COM.Items.Add(portName);
}
foreach (string Baudrate_str in Baudrate_strs)
{
comboBoxColumn_Baudrate.Items.Add(Baudrate_str);
}
foreach (string Databits_str in Databits_strs)
{
comboBoxColumn_Databits.Items.Add(Databits_str);
}
foreach (string Stopbit_str in Stopbit_strs)
{
comboBoxColumn_Stopbit.Items.Add(Stopbit_str);
}
foreach (string Checkbit_str in Checkbit_strs)
{
comboBoxColumn_Checkbit.Items.Add(Checkbit_str);
}
foreach (string End_str in End_strs)
{
comboBoxColumn_End.Items.Add(End_str);
}
foreach (string Agreement_str in Agreement_strs)
{
comboBoxColumn_Agreement.Items.Add(Agreement_str);
}
string UserProTaskCSVname = rootPath + "\\" + "串口数据列表.csv";
//读取用户程序 任务流程csv文件
if (File.Exists(UserProTaskCSVname))
{
LoadCsvToFixedDataGridView(UserProTaskCSVname, dataGridView);
}
else { }
}
private void dataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
string open_state = "";
string close_state = "";
// 获取点击的行索引和列索引
int rowIndex = e.RowIndex;
int columnIndex = e.ColumnIndex;
// 判断是否为按钮列
if (dataGridView.Columns[columnIndex] is DataGridViewButtonColumn && rowIndex >= 0)
{
string dgvPortName_str = dataGridView.Rows[rowIndex].Cells[2].FormattedValue.ToString();
string dgvBaudrate_str= dataGridView.Rows[rowIndex].Cells[3].FormattedValue.ToString();
string dgvDatabits_str = dataGridView.Rows[rowIndex].Cells[4].FormattedValue.ToString();
string dgvStopbit_str = dataGridView.Rows[rowIndex].Cells[5].FormattedValue.ToString();
string dgvCheckbit_str = dataGridView.Rows[rowIndex].Cells[6].FormattedValue.ToString();
string dgvAgreement_str= dataGridView.Rows[rowIndex].Cells[8].FormattedValue.ToString();
//打开连接按钮
if (columnIndex == 10)
{
if (rowIndex == 0)
{
if (dgvAgreement_str == "通用")
{
sPort_0 = new SerialPort();
sPort_open(sPort_0, dgvPortName_str, dgvBaudrate_str, dgvDatabits_str, dgvStopbit_str, dgvCheckbit_str, rowIndex, out open_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
try
{
modbusrtu0 = new ModbusClient(dgvPortName_str);
modbusrtu0.UnitIdentifier = 1;
modbusrtu0.Baudrate = int.Parse(dgvBaudrate_str); // 获取选择的波特率
modbusrtu0.StopBits = StopBits.One;
modbusrtu0.ConnectionTimeout = 500;
//校验位
if (dgvCheckbit_str == "无") { modbusrtu0.Parity = Parity.None; }
else if (dgvCheckbit_str == "奇校验") { modbusrtu0.Parity = Parity.Odd; }
else if (dgvCheckbit_str == "偶校验") { modbusrtu0.Parity = Parity.Even; }
// 尝试连接
modbusrtu0.Connect();
if (modbusrtu0.Connected)
{
open_state = "OK";
}
}
catch
{ open_state = "NG"; }
if (open_state == "OK")
{
modbusThread0 = new Thread(ContBackgWork_modbusrtu0);
modbusThread0.IsBackground = true;
modbusThread0.Start();
}
}
if (open_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = true; }
}
else if (rowIndex == 1)
{
if (dgvAgreement_str == "通用")
{
sPort_1 = new SerialPort();
sPort_open(sPort_1, dgvPortName_str, dgvBaudrate_str, dgvDatabits_str, dgvStopbit_str, dgvCheckbit_str, rowIndex, out open_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
try
{
modbusrtu1 = new ModbusClient(dgvPortName_str);
modbusrtu1.UnitIdentifier = 1;
modbusrtu1.Baudrate = int.Parse(dgvBaudrate_str); // 获取选择的波特率
modbusrtu1.StopBits = StopBits.One;
modbusrtu1.ConnectionTimeout = 500;
//校验位
if (dgvCheckbit_str == "无") { modbusrtu1.Parity = Parity.None; }
else if (dgvCheckbit_str == "奇校验") { modbusrtu1.Parity = Parity.Odd; }
else if (dgvCheckbit_str == "偶校验") { modbusrtu1.Parity = Parity.Even; }
// 尝试连接
modbusrtu1.Connect();
if (modbusrtu1.Connected)
{
open_state = "OK";
}
}
catch
{ open_state = "NG"; }
if (open_state == "OK")
{
modbusThread1 = new Thread(ContBackgWork_modbusrtu1);
modbusThread1.IsBackground = true;
modbusThread1.Start();
}
}
if (open_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = true; }
}
else if (rowIndex == 2)
{
if (dgvAgreement_str == "通用")
{
sPort_2 = new SerialPort();
sPort_open(sPort_2, dgvPortName_str, dgvBaudrate_str, dgvDatabits_str, dgvStopbit_str, dgvCheckbit_str, rowIndex, out open_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
try
{
modbusrtu2 = new ModbusClient(dgvPortName_str);
modbusrtu2.UnitIdentifier = 1;
modbusrtu2.Baudrate = int.Parse(dgvBaudrate_str); // 获取选择的波特率
modbusrtu2.StopBits = StopBits.One;
modbusrtu2.ConnectionTimeout = 500;
//校验位
if (dgvCheckbit_str == "无") { modbusrtu2.Parity = Parity.None; }
else if (dgvCheckbit_str == "奇校验") { modbusrtu2.Parity = Parity.Odd; }
else if (dgvCheckbit_str == "偶校验") { modbusrtu2.Parity = Parity.Even; }
// 尝试连接
modbusrtu2.Connect();
if (modbusrtu2.Connected)
{
open_state = "OK";
}
}
catch
{ open_state = "NG"; }
if (open_state == "OK")
{
modbusThread2 = new Thread(ContBackgWork_modbusrtu2);
modbusThread2.IsBackground = true;
modbusThread2.Start();
}
}
if (open_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = true; }
}
else if (rowIndex == 3)
{
if (dgvAgreement_str == "通用")
{
sPort_3 = new SerialPort();
sPort_open(sPort_3, dgvPortName_str, dgvBaudrate_str, dgvDatabits_str, dgvStopbit_str, dgvCheckbit_str, rowIndex, out open_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
try
{
modbusrtu3 = new ModbusClient(dgvPortName_str);
modbusrtu3.UnitIdentifier = 1;
modbusrtu3.Baudrate = int.Parse(dgvBaudrate_str); // 获取选择的波特率
modbusrtu3.StopBits = StopBits.One;
modbusrtu3.ConnectionTimeout = 500;
//校验位
if (dgvCheckbit_str == "无") { modbusrtu3.Parity = Parity.None; }
else if (dgvCheckbit_str == "奇校验") { modbusrtu3.Parity = Parity.Odd; }
else if (dgvCheckbit_str == "偶校验") { modbusrtu3.Parity = Parity.Even; }
// 尝试连接
modbusrtu3.Connect();
if (modbusrtu3.Connected)
{
open_state = "OK";
}
}
catch
{ open_state = "NG"; }
if (open_state == "OK")
{
modbusThread3 = new Thread(ContBackgWork_modbusrtu3);
modbusThread3.IsBackground = true;
modbusThread3.Start();
}
}
if (open_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = true; }
}
else if (rowIndex == 4)
{
if (dgvAgreement_str == "通用")
{
sPort_4 = new SerialPort();
sPort_open(sPort_4, dgvPortName_str, dgvBaudrate_str, dgvDatabits_str, dgvStopbit_str, dgvCheckbit_str, rowIndex, out open_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
try
{
modbusrtu4 = new ModbusClient(dgvPortName_str);
modbusrtu4.UnitIdentifier = 1;
modbusrtu4.Baudrate = int.Parse(dgvBaudrate_str); // 获取选择的波特率
modbusrtu4.StopBits = StopBits.One;
modbusrtu4.ConnectionTimeout = 500;
//校验位
if (dgvCheckbit_str == "无") { modbusrtu4.Parity = Parity.None; }
else if (dgvCheckbit_str == "奇校验") { modbusrtu4.Parity = Parity.Odd; }
else if (dgvCheckbit_str == "偶校验") { modbusrtu4.Parity = Parity.Even; }
// 尝试连接
modbusrtu4.Connect();
if (modbusrtu4.Connected)
{
open_state = "OK";
}
}
catch
{ open_state = "NG"; }
if (open_state == "OK")
{
modbusThread4 = new Thread(ContBackgWork_modbusrtu4);
modbusThread4.IsBackground = true;
modbusThread4.Start();
}
}
if (open_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = true; }
}
}
//关闭连接按钮
else if (columnIndex == 11)
{
if (rowIndex == 0)
{
if (dgvAgreement_str == "通用")
{
sPort_close(sPort_0, out close_state);
}
else if(dgvAgreement_str == "Modbus_RTU")
{
modbusThread0.Abort();
modbusrtu0.Disconnect();
close_state= "OK";
}
if (close_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = false; }
}
else if (rowIndex == 1)
{
if (dgvAgreement_str == "通用")
{
sPort_close(sPort_1, out close_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
modbusThread1.Abort();
modbusrtu1.Disconnect();
close_state = "OK";
}
if (close_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = false; }
}
else if (rowIndex == 2)
{
if (dgvAgreement_str == "通用")
{
sPort_close(sPort_2, out close_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
modbusThread2.Abort();
modbusrtu2.Disconnect();
close_state = "OK";
}
if (close_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = false; }
}
else if (rowIndex == 3)
{
if (dgvAgreement_str == "通用")
{
sPort_close(sPort_3, out close_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
modbusThread3.Abort();
modbusrtu3.Disconnect();
close_state = "OK";
}
if (close_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = false; }
}
else if (rowIndex == 4)
{
if (dgvAgreement_str == "通用")
{
sPort_close(sPort_4, out close_state);
}
else if (dgvAgreement_str == "Modbus_RTU")
{
modbusThread4.Abort();
modbusrtu4.Disconnect();
close_state = "OK";
}
if (close_state == "OK")
{ dataGridView.Rows[rowIndex].Cells[9].Value = false; }
}
}
}
}
private void sPort_open(SerialPort sPort, string PortName, string Baudrate, string Databits, string Stopbit, string Checkbit,int Row,out string Result)
{
Result = "";
if (sPort.IsOpen == false)
{
try
{
sPort.PortName = PortName; // 获取选择的串口端口
sPort.BaudRate = int.Parse(Baudrate); // 获取选择的波特率
sPort.DataBits = int.Parse(Databits); // 数据位
//停止位
if (Stopbit == "1") { sPort.StopBits = StopBits.One; }
else if (Stopbit == "2") { sPort.StopBits = StopBits.Two; }
//校验位
if (Checkbit == "无校验") { sPort.Parity = Parity.None; }
else if (Checkbit == "奇校验") { sPort.Parity = Parity.Odd; }
else if (Checkbit == "偶校验") { sPort.Parity = Parity.Even; }
// 打开串口
sPort.Open();
if (sPort.IsOpen)
{
if (Row == 0)
{ sPort.DataReceived += sPort0_DataReceived; }
else if (Row == 1)
{ sPort.DataReceived += sPort1_DataReceived; }
else if (Row == 2)
{ sPort.DataReceived += sPort2_DataReceived; }
else if (Row == 3)
{ sPort.DataReceived += sPort3_DataReceived; }
else if (Row == 4)
{ sPort.DataReceived += sPort4_DataReceived; }
Result = "OK";
}
}
catch
{
Result = "NG";
}
}
else
{
Result = "opened";
}
}
private void sPort_close(SerialPort sPort, out string Result)
{
if (sPort != null && sPort.IsOpen)
{
sPort.Close();
Result = "OK";
}
else
{
Result = "closed";
}
}
private void button1_Click(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex == 0)
{ sPort_send(sPort_0, textBox1.Text); }
else if (comboBox1.SelectedIndex == 1)
{ sPort_send(sPort_1, textBox1.Text); }
else if (comboBox1.SelectedIndex == 2)
{ sPort_send(sPort_2, textBox1.Text); }
}
private void sPort_send(SerialPort sPort,string sendData)
{
if (sPort != null && sPort.IsOpen)
{
try
{
// 转换为字节数组并通过串口发送
byte[] buffer = Encoding.UTF8.GetBytes(sendData);
sPort.Write(buffer, 0, buffer.Length);
}
catch (Exception ex)
{
MessageBox.Show("COM发送数据失败！");
}
}
}
private void sPort0_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string end_str=dataGridView.Rows[0].Cells[7].FormattedValue.ToString();
// 创建临时存储空间保存本次读取的结果
byte[] buffer = new byte[sPort_0.BytesToRead];
int bytesReadCount = sPort_0.Read(buffer, 0, buffer.Length);
// 追加新获取的内容至全局累积变量中
string newDataString = Encoding.UTF8.GetString(buffer, 0, bytesReadCount);
receivedDataBuffer0.Append(newDataString);
if (end_str == "/r" || end_str == "/n" || end_str == "/r/n")
{
int endIndex = 0;
if (end_str == "/r")
{
endIndex = receivedDataBuffer0.ToString().LastIndexOf("\r");
}
else if (end_str == "/n")
{
endIndex = receivedDataBuffer0.ToString().LastIndexOf("\n");
}
else if (end_str == "/r/n")
{
endIndex = receivedDataBuffer0.ToString().LastIndexOf("\r\n");
}
if (endIndex > 0)
{
// 提取消息主体部分
string completeMessage = receivedDataBuffer0.ToString(0, endIndex).Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer0.Remove(0, receivedDataBuffer0.Length);
// 输出处理后的结果
sPort0_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
else if (end_str == "" || end_str == "无")
{
Thread.Sleep(100);
// 提取消息主体部分
string completeMessage = receivedDataBuffer0.ToString().Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer0.Remove(0, receivedDataBuffer0.Length);
// 输出处理后的结果
sPort0_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
private void sPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string end_str = dataGridView.Rows[1].Cells[7].FormattedValue.ToString();
// 创建临时存储空间保存本次读取的结果
byte[] buffer = new byte[sPort_1.BytesToRead];
int bytesReadCount = sPort_1.Read(buffer, 0, buffer.Length);
// 追加新获取的内容至全局累积变量中
string newDataString = Encoding.UTF8.GetString(buffer, 0, bytesReadCount);
receivedDataBuffer1.Append(newDataString);
if (end_str == "/r" || end_str == "/n" || end_str == "/r/n")
{
int endIndex = 0;
if (end_str == "/r")
{
endIndex = receivedDataBuffer1.ToString().LastIndexOf("\r");
}
else if (end_str == "/n")
{
endIndex = receivedDataBuffer1.ToString().LastIndexOf("\n");
}
else if (end_str == "/r/n")
{
endIndex = receivedDataBuffer1.ToString().LastIndexOf("\r\n");
}
if (endIndex > 0)
{
// 提取消息主体部分
string completeMessage = receivedDataBuffer1.ToString(0, endIndex).Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer1.Remove(0, receivedDataBuffer1.Length);
// 输出处理后的结果
sPort1_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
else if (end_str == "" || end_str == "无")
{
Thread.Sleep(100);
// 提取消息主体部分
string completeMessage = receivedDataBuffer1.ToString().Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer1.Remove(0, receivedDataBuffer1.Length);
// 输出处理后的结果
sPort1_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
private void sPort2_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string end_str = dataGridView.Rows[2].Cells[7].FormattedValue.ToString();
// 创建临时存储空间保存本次读取的结果
byte[] buffer = new byte[sPort_2.BytesToRead];
int bytesReadCount = sPort_2.Read(buffer, 0, buffer.Length);
// 追加新获取的内容至全局累积变量中
string newDataString = Encoding.UTF8.GetString(buffer, 0, bytesReadCount);
receivedDataBuffer2.Append(newDataString);
if (end_str == "/r" || end_str == "/n" || end_str == "/r/n")
{
int endIndex = 0;
if (end_str == "/r")
{
endIndex = receivedDataBuffer2.ToString().LastIndexOf("\r");
}
else if (end_str == "/n")
{
endIndex = receivedDataBuffer2.ToString().LastIndexOf("\n");
}
else if (end_str == "/r/n")
{
endIndex = receivedDataBuffer2.ToString().LastIndexOf("\r\n");
}
if (endIndex > 0)
{
// 提取消息主体部分
string completeMessage = receivedDataBuffer2.ToString(0, endIndex).Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer2.Remove(0, receivedDataBuffer2.Length);
// 输出处理后的结果
sPort2_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
else if (end_str == "" || end_str == "无")
{
Thread.Sleep(100);
// 提取消息主体部分
string completeMessage = receivedDataBuffer2.ToString().Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer2.Remove(0, receivedDataBuffer2.Length);
// 输出处理后的结果
sPort2_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
private void sPort3_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string end_str = dataGridView.Rows[3].Cells[7].FormattedValue.ToString();
// 创建临时存储空间保存本次读取的结果
byte[] buffer = new byte[sPort_3.BytesToRead];
int bytesReadCount = sPort_3.Read(buffer, 0, buffer.Length);
// 追加新获取的内容至全局累积变量中
string newDataString = Encoding.UTF8.GetString(buffer, 0, bytesReadCount);
receivedDataBuffer3.Append(newDataString);
if (end_str == "/r" || end_str == "/n" || end_str == "/r/n")
{
int endIndex = 0;
if (end_str == "/r")
{
endIndex = receivedDataBuffer3.ToString().LastIndexOf("\r");
}
else if (end_str == "/n")
{
endIndex = receivedDataBuffer3.ToString().LastIndexOf("\n");
}
else if (end_str == "/r/n")
{
endIndex = receivedDataBuffer3.ToString().LastIndexOf("\r\n");
}
if (endIndex > 0)
{
// 提取消息主体部分
string completeMessage = receivedDataBuffer3.ToString(0, endIndex).Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer3.Remove(0, receivedDataBuffer3.Length);
// 输出处理后的结果
sPort3_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
else if (end_str == "" || end_str == "无")
{
Thread.Sleep(100);
// 提取消息主体部分
string completeMessage = receivedDataBuffer3.ToString().Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer3.Remove(0, receivedDataBuffer3.Length);
// 输出处理后的结果
sPort3_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
private void sPort4_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string end_str = dataGridView.Rows[4].Cells[7].FormattedValue.ToString();
// 创建临时存储空间保存本次读取的结果
byte[] buffer = new byte[sPort_4.BytesToRead];
int bytesReadCount = sPort_4.Read(buffer, 0, buffer.Length);
// 追加新获取的内容至全局累积变量中
string newDataString = Encoding.UTF8.GetString(buffer, 0, bytesReadCount);
receivedDataBuffer4.Append(newDataString);
if (end_str == "/r" || end_str == "/n" || end_str == "/r/n")
{
int endIndex = 0;
if (end_str == "/r")
{
endIndex = receivedDataBuffer4.ToString().LastIndexOf("\r");
}
else if (end_str == "/n")
{
endIndex = receivedDataBuffer4.ToString().LastIndexOf("\n");
}
else if (end_str == "/r/n")
{
endIndex = receivedDataBuffer4.ToString().LastIndexOf("\r\n");
}
if (endIndex > 0)
{
// 提取消息主体部分
string completeMessage = receivedDataBuffer4.ToString(0, endIndex).Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer4.Remove(0, receivedDataBuffer4.Length);
// 输出处理后的结果
sPort4_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
else if (end_str == "" || end_str == "无")
{
Thread.Sleep(100);
// 提取消息主体部分
string completeMessage = receivedDataBuffer4.ToString().Trim();
// 清理缓冲区保留剩余未解析的部分
receivedDataBuffer4.Remove(0, receivedDataBuffer4.Length);
// 输出处理后的结果
sPort4_ReceiveStr = completeMessage;
// 执行进一步业务逻辑...
}
}
//************************************ DataGridView操作方法 *****************************************
#region DataGridView操作方法
private void SaveDataGridViewToCsv(string filePath, DataGridView dgv)
{
StringBuilder sb = new StringBuilder();
// 添加表头
for (int colIdx = 0; colIdx < dgv.Columns.Count; colIdx++)
{
sb.Append(dgv.Columns[colIdx].HeaderText);
if (colIdx != dgv.Columns.Count - 1) sb.Append(",");
}
sb.AppendLine();
// 遍历所有行并将数据追加到字符串中
foreach (DataGridViewRow row in dgv.Rows)
{
for (int cellIdx = 0; cellIdx < dgv.Columns.Count; cellIdx++)
{
if (dgv.Columns[cellIdx] is DataGridViewComboBoxColumn comboBoxCol)
{
sb.Append(row.Cells[cellIdx].FormattedValue); // 获取 ComboBox 显示值
}
else if (dgv.Columns[cellIdx] is DataGridViewCheckBoxColumn checkBoxCol)
{
sb.Append(row.Cells[cellIdx].EditedFormattedValue.ToString()); // 获取 CheckBox 勾选状态
}
else
{
sb.Append(row.Cells[cellIdx].Value?.ToString() ?? ""); // 普通文本列
}
if (cellIdx != dgv.Columns.Count - 1) sb.Append(",");
}
sb.AppendLine();
}
// 写入文件
System.IO.File.WriteAllText(filePath, sb.ToString(), Encoding.UTF8);
}
private void LoadCsvToFixedDataGridView(string filePath, DataGridView dgv)
{
dgv.Rows.Clear();
try
{
List<string[]> rowsData = new List<string[]>();
using (StreamReader sr = new StreamReader(filePath))
{
string line;
int rowIndex = 0;
while ((line = sr.ReadLine()) != null)
{
if (rowIndex == 0) { rowIndex++; continue; } // 跳过表头
string[] rowData = line.Split(',');
rowsData.Add(rowData);
}
}
foreach (var rowData in rowsData)
{
object[] valuesToAdd = new object[dgv.Columns.Count];
for (int i = 0; i < dgv.Columns.Count; i++)
{
if (dgv.Columns[i] is DataGridViewComboBoxColumn comboBoxCol)
{
valuesToAdd[i] = comboBoxCol.Items.Cast<object>()
.FirstOrDefault(item => item.ToString().Equals(rowData[i], StringComparison.OrdinalIgnoreCase));
}
else if (dgv.Columns[i] is DataGridViewCheckBoxColumn checkBoxCol)
{
valuesToAdd[i] = bool.TryParse(rowData[i], out bool isChecked) ? isChecked : false;
}
else
{
valuesToAdd[i] = rowData[i];
}
}
dgv.Rows.Add(valuesToAdd);
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(dgv.Name.ToString() + " Failed to load data from CSV file." + Environment.NewLine + ex.Message,
"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
// 判断是否有足够的行可删
if (dgv.Rows.Count > 1)
{
// 获取最后一个非新行的索引
int lastIndex = dgv.Rows.Count - 2;
// 移除该行
dgv.Rows.RemoveAt(lastIndex);
}
}
#endregion
private void ContBackgWork_modbusrtu0()
{
while (true)
{
try
{
modbusRtuInt_0 = modbusrtu0.ReadHoldingRegisters(0, 10);
}
catch { }
Thread.Sleep(10);
}
}
private void ContBackgWork_modbusrtu1()
{
while (true)
{
try
{
modbusRtuInt_1 = modbusrtu1.ReadHoldingRegisters(0, 10);
}
catch { }
Thread.Sleep(10);
}
}
private void ContBackgWork_modbusrtu2()
{
while (true)
{
try
{
modbusRtuInt_2 = modbusrtu2.ReadHoldingRegisters(0, 10);
}
catch { }
Thread.Sleep(10);
}
}
private void ContBackgWork_modbusrtu3()
{
while (true)
{
try
{
modbusRtuInt_3 = modbusrtu3.ReadHoldingRegisters(0, 10);
}
catch { }
Thread.Sleep(10);
}
}
private void ContBackgWork_modbusrtu4()
{
while (true)
{
try
{
modbusRtuInt_4 = modbusrtu4.ReadHoldingRegisters(0, 10);
}
catch { }
Thread.Sleep(10);
}
}
private void timer1_Tick(object sender, EventArgs e)
{
label1.Text = sPort0_ReceiveStr;
label2.Text = sPort1_ReceiveStr;
label3.Text = sPort2_ReceiveStr;
}
最新发布
本文探讨了在Java中如何安全地检查字符串是否为null或空，并提供了避免NullPointerException的建议。通过合理的代码实现，可以有效地处理字符串为空或null的情况。
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