c# 使用线程对串口serialPort进行收发数据

一共写了四种方法，窗体界面都是一样的：
方法一：

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;
using System.Threading.Tasks;
using System.Windows.Forms;namespace serialPort_0620
{public partial class Form1 : Form{public Form1(){InitializeComponent();//不进行跨线程安全检查System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;}private void Form1_Load(object sender, EventArgs e){//检查是否含有串口string[] str = SerialPort.GetPortNames();for (int i = 0; i < str.Length; i++){comboBox1.Items.Add(str[i]);}button2.Enabled = false;button3.Enabled = false;button4.Enabled = false;dataGridView1.Rows.Add(68);//标序号for (int i = 0; i < 69; i++){dataGridView1.Rows[i].Cells[0].Value = i;}}/// <summary>/// 打开串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){if (serialPort1.IsOpen){MessageBox.Show("串口已打开");}else if (comboBox1.Text == ""){MessageBox.Show("请选择端口！");}else if (textBox1.Text == ""){MessageBox.Show("请输入波特率！");}else{serialPort1.PortName = comboBox1.Text;serialPort1.BaudRate = Convert.ToInt16(textBox1.Text);serialPort1.Open();button1.Enabled = false;button2.Enabled = true;button3.Enabled = true;button4.Enabled = true;}}/// <summary>/// 发送数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button3_Click(object sender, EventArgs e){if (textBox1.Text == ""){MessageBox.Show("请输入要发送的数据");}else{serialPort1.WriteLine(textBox2.Text);string data = serialPort1.ReadLine();listBox1.Items.Add(data);int a = listBox1.Items.Count;listBox1.SelectedIndex = listBox1.Items.Count - 1;}}/// <summary>/// 接收数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button4_Click(object sender, EventArgs e){}/// <summary>/// 关闭串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button2_Click(object sender, EventArgs e){serialPort1.Close();button1.Enabled = true;}Thread thread;/// <summary>/// 开始/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button5_Click(object sender, EventArgs e){if (false == serialPort1.IsOpen){MessageBox.Show("端口未打开");}else{thread = new Thread(new ThreadStart(PrintEven));thread.Start();}}private void PrintEven(){while (true){if (textBox2.Text == ""){MessageBox.Show("请输入要发送的数据");}else{if (serialPort1.IsOpen){serialPort1.WriteLine(textBox2.Text);string data = serialPort1.ReadLine();listBox1.Items.Add(data);listBox1.SelectedIndex = listBox1.Items.Count - 1;for (int i = 0; i < 47; i++){string[] result = data.Split(',');dataGridView1.Rows[i].Cells[1].Value = result[i + 1];dataGridView1.Rows[i].Cells[2].Value = Convert.ToDouble(result[i + 1]) * 5.0 / 1024.0;}}Thread.Sleep(5000);}}}/// <summary>/// 结束/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button6_Click(object sender, EventArgs e){thread.Abort();}}
}//不进行跨线程安全检查

方法二：

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;
using System.Threading.Tasks;
using System.Windows.Forms;namespace serialPort_0620
{public partial class Form2 : Form{public Form2(){InitializeComponent();}private void Form2_Load(object sender, EventArgs e){string[] str = SerialPort.GetPortNames();for (int i = 0; i < str.Length; i++){comboBox1.Items.Add(str[i]);}button2.Enabled = false;button3.Enabled = false;button4.Enabled = false;dataGridView1.Rows.Add(68);//标序号for (int i = 0; i < 69; i++){dataGridView1.Rows[i].Cells[0].Value = i;}}/// <summary>/// 打开串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){if (serialPort1.IsOpen){MessageBox.Show("串口已打开");}else if (comboBox1.Text == ""){MessageBox.Show("请选择端口！");}else if (textBox1.Text == ""){MessageBox.Show("请输入波特率！");}else{serialPort1.PortName = comboBox1.Text;serialPort1.BaudRate = Convert.ToInt16(textBox1.Text);serialPort1.Open();button1.Enabled = false;button2.Enabled = true;button3.Enabled = true;button4.Enabled = true;}}private void button2_Click(object sender, EventArgs e){serialPort1.Close();button1.Enabled = true;}private void button3_Click(object sender, EventArgs e){if (textBox1.Text == ""){MessageBox.Show("请输入要发送的数据");}else{serialPort1.WriteLine(textBox2.Text);}}private void button4_Click(object sender, EventArgs e){string data = serialPort1.ReadLine();listBox1.Items.Add(data);int a = listBox1.Items.Count;listBox1.SelectedIndex = listBox1.Items.Count - 1;}//创建线程Thread thread;//建立委托public delegate void SetTextHandler(string result);private void setItem(string result){if (listBox1.InvokeRequired == true){SetTextHandler setTextHandler = setItem;listBox1.Invoke(setTextHandler, new object[] { result });}else{listBox1.Items.Add(result);listBox1.SelectedIndex = listBox1.Items.Count - 1;}}private void button5_Click(object sender, EventArgs e){if (false == serialPort1.IsOpen){MessageBox.Show("端口未打开");}else{thread = new Thread(new ThreadStart(PrintEven));thread.Start();}}private void PrintEven(){while (true){if (textBox2.Text == ""){MessageBox.Show("请输入要发送的数据");}else{if (serialPort1.IsOpen){serialPort1.WriteLine(textBox2.Text);string data = serialPort1.ReadLine();setItem(data);for (int i = 0; i < 47; i++){string[] result = data.Split(',');dataGridView1 .Rows[i].Cells[1].Value = result[i + 1];dataGridView1.Rows[i].Cells[2].Value = Convert.ToDouble(result[i + 1]) * 5.0 / 1024.0;}}Thread.Sleep(5000);}}}/// <summary>/// 结束/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button6_Click(object sender, EventArgs e){thread.Abort();}}
}
// 建立委托 （参考网上  很规范的写法）

方法三：

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;
using System.Threading.Tasks;
using System.Windows.Forms;namespace serialPort_0620
{public partial class Form3 : Form{public Form3(){InitializeComponent();}private void Form3_Load(object sender, EventArgs e){string[] str = SerialPort.GetPortNames();for (int i = 0; i < str.Length; i++){comboBox1.Items.Add(str[i]);}button2.Enabled = false;button3.Enabled = false;button4.Enabled = false;dataGridView1.Rows.Add(68);//标序号for (int i = 0; i < 69; i++){dataGridView1.Rows[i].Cells[0].Value = i;}}/// <summary>/// 打开串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){if (serialPort1.IsOpen){MessageBox.Show("串口已打开");}else if (comboBox1.Text == ""){MessageBox.Show("请选择端口！");}else if (textBox1.Text == ""){MessageBox.Show("请输入波特率！");}else{serialPort1.PortName = comboBox1.Text;serialPort1.BaudRate = Convert.ToInt16(textBox1.Text);serialPort1.Open();button1.Enabled = false;button2.Enabled = true;button3.Enabled = true;button4.Enabled = true;}}/// <summary>/// 关闭串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button2_Click(object sender, EventArgs e){serialPort1.Close();button1.Enabled = true;}/// <summary>/// 发送数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button3_Click(object sender, EventArgs e){if (textBox1.Text == ""){MessageBox.Show("请输入要发送的数据");}else{serialPort1.WriteLine(textBox2.Text);}}/// <summary>/// 接收数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button4_Click(object sender, EventArgs e){string data = serialPort1.ReadLine();listBox1.Items.Add(data);int a = listBox1.Items.Count;listBox1.SelectedIndex = listBox1.Items.Count - 1;}//创建线程Thread thread;/// <summary>/// 开始/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button5_Click(object sender, EventArgs e){if (false == serialPort1.IsOpen){MessageBox.Show("端口未打开");}else{thread = new Thread(new ThreadStart(PrintEven));thread.Start();}}private void PrintEven(){while (true){if (textBox2.Text == ""){MessageBox.Show("请输入要发送的数据");}else{if (serialPort1.IsOpen){serialPort1.WriteLine(textBox2.Text);string data = serialPort1.ReadLine();//setItem(data);listBox1.Invoke(new Action(()=> {listBox1.Items.Add(data);listBox1.SelectedIndex = listBox1.Items.Count - 1;for (int i = 0; i < 47; i++){string[] result = data.Split(',');dataGridView1.Rows[i].Cells[1].Value = result[i + 1];dataGridView1.Rows[i].Cells[2].Value = Convert.ToDouble(result[i + 1]) * 5.0 / 1024.0;}}));}Thread.Sleep(5000);}}}private void button6_Click(object sender, EventArgs e){}}
}
//第二种委托 更常用

方法四：

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.Windows.Forms;
using System.Threading;
using System.IO.Ports;namespace serialPort_0620
{public partial class Form4 : Form{public Form4(){InitializeComponent();}private void Form4_Load(object sender, EventArgs e){string[] str = SerialPort.GetPortNames();for (int i = 0; i < str.Length; i++){comboBox1.Items.Add(str[i]);}button2.Enabled = false;button3.Enabled = false;button4.Enabled = false;dataGridView1.Rows.Add(68);//标序号for (int i = 0; i < 69; i++){dataGridView1.Rows[i].Cells[0].Value = i;}}/// <summary>/// 打开串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){if (serialPort1.IsOpen){MessageBox.Show("串口已打开");}else if (comboBox1.Text == ""){MessageBox.Show("请选择端口！");}else if (textBox1.Text == ""){MessageBox.Show("请输入波特率！");}else{serialPort1.PortName = comboBox1.Text;serialPort1.BaudRate = Convert.ToInt16(textBox1.Text);serialPort1.Open();button1.Enabled = false;button2.Enabled = true;button3.Enabled = true;button4.Enabled = true;}}/// <summary>/// 关闭串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button2_Click(object sender, EventArgs e){serialPort1.Close();button1.Enabled = true;}/// <summary>/// 发送数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button3_Click(object sender, EventArgs e){if (textBox1.Text == ""){MessageBox.Show("请输入要发送的数据");}else{serialPort1.WriteLine(textBox2.Text);}}/// <summary>/// 接收数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button4_Click(object sender, EventArgs e){string data = serialPort1.ReadLine();listBox1.Items.Add(data);int a = listBox1.Items.Count;listBox1.SelectedIndex = listBox1.Items.Count - 1;}//创建线程Thread thread;/// <summary>/// 开始/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button5_Click(object sender, EventArgs e){if (false == serialPort1.IsOpen){MessageBox.Show("端口未打开");}else{thread = new Thread(new ThreadStart(PrintEven));thread.Start();}}private void PrintEven(){while (true){if (textBox2.Text == ""){MessageBox.Show("请输入要发送的数据");}else{if (serialPort1.IsOpen){listBox1.Invoke(new Action(set));}Thread.Sleep(5000);}}}void set(){serialPort1.WriteLine(textBox2.Text);string data = serialPort1.ReadLine();listBox1.Items.Add(data);listBox1.SelectedIndex = listBox1.Items.Count - 1;for (int i = 0; i < 47; i++){string[] result = data.Split(',');dataGridView1.Rows[i].Cells[1].Value = result[i + 1];dataGridView1.Rows[i].Cells[2].Value = Convert.ToDouble(result[i + 1]) * 5.0 / 1024.0;}}/// <summary>/// 结束/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button6_Click(object sender, EventArgs e){thread.Abort();}}
}
//建立委托，invoke的第二种写法

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c# 使用线程对串口serialPort进行收发数据

c# 使用线程对串口serialPort进行收发数据

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