C#委託的使用和串列通訊接收事件顯示在指定控制項

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本執行個體示範定義委託，並利用委託把來自串口接收到的資料顯示在文字框中！熟悉委託的定義和串列資料收發的簡易功能！

本文原始碼，可以酌情修改代碼運行調試，串口連接埠我使用的COM11,你需要改成自己的才好用建議是COM1

http://download.csdn.net/detail/nieweiking/8245463

項目代碼：

<pre name="code" class="csharp">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;namespace WindowsFormsApplication1{    /// <summary>    /// QQ 458978 無名 C#開發技術 歡迎和我交流探討    /// </summary>    public partial class Form1 : Form    {        /// <summary>        /// 定義委託        /// </summary>        /// <param name="a"></param>        public delegate void ShowString(string a);        /// <summary>        /// 字元顯示在文字框        /// </summary>        /// <param name="a"></param>        public void ShowTxt(string a)        {            this.textBox1.AppendText(DateTime.Now.ToString() + " | " + a + "\n");            if (textBox1.TextLength > 2000)            {                textBox1.Clear();            }        }        /// <summary>        /// 定義委託並初始化        /// </summary>        ShowString AA;        /// <summary>        /// 接收字串儲存        /// </summary>        string ReadStr = "";        public Form1()        {            InitializeComponent();            serialPort1.Open();            AA = new ShowString(ShowTxt);//初始化委託        }        //串口收到資料並回傳        private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)        {            ReadStr = serialPort1.ReadExisting();            byte[] ReadBuffer;            ReadBuffer= System.Text.ASCIIEncoding.ASCII.GetBytes(ReadStr);           this.Invoke(AA, ReadStr);            serialPort1.Write(ReadBuffer, 0, ReadBuffer.Length);        }    }}

運行片：

C#委託的使用和串列通訊接收事件顯示在指定控制項