C#委托和串行收发数据

本实例演示定义委托，并利用委托把来自串口接收到的数据显示在文本框中！熟悉委托的定义和串行数据收发的简单功能！

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
{
    public partial class Form1 : Form
    {

        /// 

        /// 定义委托
        /// 

        /// 
        public delegate void ShowString（string a）;

        /// 

        /// 字符显示在文本框
        /// 

        /// 
        public void ShowTxt（string a）
        {
            this.textBox1.AppendText（DateTime.Now.ToString（） + “ | “ + a + “\n“）;
            if （textBox1.TextLength > 2000）
            {
                textBox1.Clear（）;
            }

        }

        /// 

        /// 定义委托并初始化
        /// 

        ShowString AA;
        /// 

        /// 接收字符串存储
        /// 

        string ReadStr = ““;
        public Form1（）
        {
            InitializeComponent（）;
            serialPort1.Open（）;
            AA = new ShowString（ShowTxt）;//初始化委托
        }
        //串口收到数据并回发
        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）;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      10752  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe

     文件      30208  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb

     文件      11600  2014-12-10 20:43  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe

     文件        490  2010-03-17 22:39  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest

     文件       1669  2014-12-10 20:45  WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs

     文件       2936  2014-12-10 20:45  WindowsFormsApplication1\WindowsFormsApplication1\Form1.Designer.cs

     文件       6016  2014-12-10 20:45  WindowsFormsApplication1\WindowsFormsApplication1\Form1.resx

     文件        374  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\Form2.cs

     文件       1969  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\Form2.Designer.cs

     文件       5817  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\Form2.resx

     文件       2164  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6441  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        614  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\GenerateResource.read.1.tlog

     文件       1476  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\GenerateResource.write.1.tlog

     文件       1366  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.csproj.FileListAbsolute.txt

     文件      10752  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.exe

     文件        180  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Form1.resources

     文件        180  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Form2.resources

     文件      30208  2014-12-10 20:47  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.pdb

     文件        180  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Properties.Resources.resources

     文件        507  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\Program.cs

     文件       1398  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\Properties\AssemblyInfo.cs

     文件       2899  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.Designer.cs

     文件       5612  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.resx

     文件       1110  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.Designer.cs

     文件        249  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.settings

     文件       4011  2014-12-10 20:05  WindowsFormsApplication1\WindowsFormsApplication1\WindowsFormsApplication1.csproj

     文件        914  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1.sln

    ..A..H.     20992  2014-12-10 20:45  WindowsFormsApplication1\WindowsFormsApplication1.suo

     目录          0  2014-12-10 20:03  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\TempPE

............此处省略11个文件信息