C# 事件觸發的RS232－喜歡亂搞的世界

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

// user include----------------------------
using System.IO.Ports;

namespace rs232v2
{
    public partial class Form1 : Form
    {
        public SerialPort serialPort = new SerialPort();
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // button 設定
            this.button1.Text = "Open COM";
            this.button2.Text = "Send";

            this.button2.Enabled = false;

            // 事件初始化
            this.button1.Click += new EventHandler(Rs232PortDoor);
            this.button2.Click += new EventHandler(SendPhone);

            // rs232 door key
            rs232Key = true;
        }

        bool rs232Key;
        // button1 事件處理
        // 初始PORT & 打開 button2
        private void Rs232PortDoor(object sender, EventArgs e)
        {
            if (rs232Key)
            {
                this.button1.Text = "Close Port";

                // 打開 button2
                this.button2.Enabled = true;

                // 設定使用的 PORT
                this.serialPort.PortName = "COM4";

                // 檢查 PORT 是否關閉
                if (!serialPort.IsOpen)
                    this.serialPort.Close();

                // 初始化 PORT
                this.serialPort.BaudRate = 9600;            // baud rate = 9600
                this.serialPort.Parity = Parity.None;       // Parity = none
                this.serialPort.StopBits = StopBits.One;    // stop bits = one
                this.serialPort.DataBits = 8;               // data bits = 8

                // 設定 PORT 接收事件
                serialPort.DataReceived += new SerialDataReceivedEventHandler(SerialPort_DataReceived);

                // 打開 PORT
                serialPort.Open();

                // 清空 serial port 的緩存
                serialPort.DiscardInBuffer();       // RX
                serialPort.DiscardOutBuffer();      // TX

                rs232Key = false;
            }
            else
            {
                this.button1.Text = "Open Port";

                // 清空 serial port 的緩存
                serialPort.DiscardInBuffer();       // RX
                serialPort.DiscardOutBuffer();      // TX

                // 關閉 PORT
                this.serialPort.Close();

                // 關閉 button2
                this.button2.Enabled = false;

                rs232Key = true;
            }
        }

        // button2 事件處理
        // 傳送三組電話過去
        private void SendPhone(object sender, EventArgs e)
        {
            char[] textBuf;

            textBuf = this.textBox1.Text.ToCharArray();
            rs232Output(textBuf);

            textBuf = this.textBox2.Text.ToCharArray();
            rs232Output(textBuf);

            textBuf = this.textBox3.Text.ToCharArray();
            rs232Output(textBuf);
        }

        // 經由RS232 字串傳送
        private void rs232Output(char[] phoneNum)
        {
            for (int i = 0; i < phoneNum.Length; i++)
            {
                serialPort.Write(phoneNum, i, 1);
                //serialPort.Write("A");
            }

            // 傳送 Enter 的 ascii code
            byte[] commEnter = new byte[] {0x0D, 0x0A};
            for (int i = 0; i < 2; i++)
            {
                serialPort.Write(commEnter, i, 1);
            }
            Console.WriteLine("output Phone Number" + phoneNum.ToString());
        }

        // PORT 接收事件
        void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte RB = Byte.Parse(serialPort.ReadByte().ToString());
            //SetText(RB.ToString());
            SetText(textBox4.Text + RB.ToString() + " ");
        }

        // TextBox2 跨執行續執行
        delegate void SetTextCallback(string text);
        private void SetText(string text)
        {
            if (this.textBox2.InvokeRequired)
            {
                SetTextCallback d = new SetTextCallback(SetText);
                this.Invoke(d, new object[] { text });
            }
            else
            {
                this.textBox4.Text = text;
            }
        }
    }
}