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   源码介绍

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串口调试助手 VS开发,C#串口编程实例

public partial class Form1 : Form
    {
        private StreamReader sRead;
        public int iTextbox2 = 0;
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            string[] str = SerialPort.GetPortNames();
            if (str == null)
            {
                MessageBox.Show("本机没有串口！", "Error");
                return;
            }
            comboBox1.Items.AddRange(str);
            comboBox1.SelectedIndex = 0;
            comboBox2.SelectedIndex = 5;
            comboBox3.SelectedIndex = 3;
            comboBox4.SelectedIndex = 0;
            this.toolStripStatusLabel1.Text = "端口号:端口未打开";
            this.toolStripStatusLabel2.Text = "波特率:端口未打开";
            this.toolStripStatusLabel3.Text = "数据位:端口未打开";
            this.toolStripStatusLabel4.Text = "停止位:端口未打开";
        }
        private void button1_Click(object sender, EventArgs e)
        {
            String str1 = comboBox1.Text;
            String str2 = comboBox2.Text;
            String str3 = comboBox3.Text;
            String str4 = comboBox4.Text;
            Int32 int2 = Convert.ToInt32(str2);
            Int32 int3 = Convert.ToInt32(str3);
            try
            {
                if (str1 == null)
                {
                    MessageBox.Show("请先选择串口!", "Error");
                    return;
                }
                serialPort1.PortName = str1;
                serialPort1.BaudRate = int2;
                serialPort1.DataBits = int3;
                switch (comboBox4.Text)
                {
                    case "1":
                        serialPort1.StopBits = StopBits.One;
                        break;
                    case "1.5":
                        serialPort1.StopBits = StopBits.OnePointFive;
                        break;
                    case "2":
                        serialPort1.StopBits = StopBits.Two;
                        break;
                    default:
                        MessageBox.Show("Error:参数不正确", "Error");
                        break;
                }
                if (serialPort1.IsOpen == true)
                {
                    serialPort1.Close();
                }
                serialPort1.Open();
                MessageBox.Show("串口打开成功!", str1);
                this.toolStripStatusLabel1.Text = "端口号:" serialPort1.PortName " ";
                this.toolStripStatusLabel2.Text = "波特率:" serialPort1.BaudRate " ";
                this.toolStripStatusLabel3.Text = "数据位:" serialPort1.DataBits " ";
                this.toolStripStatusLabel4.Text = "停止位:" serialPort1.StopBits " ";
                button1.Enabled = false;
                comboBox1.Enabled = false;
                comboBox2.Enabled = false;
                comboBox3.Enabled = false;
                comboBox4.Enabled = false;
            }
            catch(Exception er)
            {
                MessageBox.Show("Error:" er.Message, "Error");
                return;
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            button1.Enabled = true;
            comboBox1.Enabled = true;
            comboBox2.Enabled = true;
            comboBox3.Enabled = true;
            comboBox4.Enabled = true;
            serialPort1.Close();
            this.toolStripStatusLabel1.Text = "端口号:端口未打开";
            this.toolStripStatusLabel2.Text = "波特率:端口未打开";
            this.toolStripStatusLabel3.Text = "数据位:端口未打开";
            this.toolStripStatusLabel4.Text = "停止位:端口未打开";
        }