C#串口 问题 救命啊

Question

namespace Ex13_01
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM10";
            serialPort1.BaudRate = 9600;
            serialPort1.Open();
            byte[] data = Encoding.Unicode.GetBytes(textBox1.Text);
            string str = Convert.ToBase64String(data);
            serialPort1.WriteLine(str);
            MessageBox.Show("数据发送成功！","系统提示");
        }        private void button2_Click(object sender, EventArgs e)
        {
            byte[] data = Convert.FromBase64String(serialPort1.ReadLine());
            textBox2.Text = Encoding.Unicode.GetString(data);
            serialPort1.Close();
            MessageBox.Show("数据接收成功！","系统提示");
        }
    }
}
这是 一本书上的 源程序代码   就2个BUTTON  2个 TEXTBOX    第一步 可以  实现  第二步 就卡住不动了，哪个高手 帮个忙这个我是在不明白   就简单的 告诉我 怎么写就行了  不用告诉我原理  谢谢

Answer 1

这个不是怎么写的问题关键是你的第二个，是否有数据到达，如果你的设备没有给你发送消息，那么它就一直卡着就像你在控制台写ReadLine()会怎么样？
暂停，等你输入，你输入了，才会继续

Answer 2

button2_Click事件中单步调试 看看卡在哪一行了

Answer 3

1)serialPort1.PortName = "COM10";
你有COM10??,打开你的设备管理器看看,到底是哪个端口
2)没有打开串口,直接去ReadLine是会阻塞的
3)data,你要判断是否为空,是否包含数据,再去做编码转换

Answer 4

第二步卡住是因为那个端口没有数据可以接收。
给你推荐个软件，可以生成一对虚拟的串口来进行串口程序的调试。
VSPD XP 5

Answer 5

多线程试下，因为一个线程做了收串口就不刷屏了，所以会死掉。
不知道对不对
thread
invoke

Answer 6

namespace ceshi1_1
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }        #region Windows 窗体设计器生成的代码        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.button1 = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.serialPort1 = new System.IO.Ports.SerialPort(this.components);
            this.btnSend = new System.Windows.Forms.Button();
            this.timeSend = new System.Windows.Forms.Timer(this.components);
            this.cbxAutoSend = new System.Windows.Forms.CheckBox();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(15, 100);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(67, 22);
            this.button1.TabIndex = 0;
            this.button1.Text = "打开";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(100, 72);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(172, 143);
            this.textBox1.TabIndex = 1;
            // 
            // serialPort1
            // 
            this.serialPort1.PortName = "COM3";
            this.serialPort1.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.serialPort1_DataReceived);
            // 
            // btnSend
            // 
            this.btnSend.Location = new System.Drawing.Point(15, 163);
            this.btnSend.Name = "btnSend";
            this.btnSend.Size = new System.Drawing.Size(70, 23);
            this.btnSend.TabIndex = 2;
            this.btnSend.Text = "发送";
            this.btnSend.UseVisualStyleBackColor = true;
            this.btnSend.Click += new System.EventHandler(this.btnSend_Click);
            // 
            // timeSend
            // 
            this.timeSend.Interval = 500;
            this.timeSend.Tick += new System.EventHandler(this.timeSend_Tick);
            // 
            // cbxAutoSend
            // 
            this.cbxAutoSend.AutoSize = true;
            this.cbxAutoSend.Location = new System.Drawing.Point(100, 234);
            this.cbxAutoSend.Name = "cbxAutoSend";
            this.cbxAutoSend.Size = new System.Drawing.Size(72, 16);
            this.cbxAutoSend.TabIndex = 3;
            this.cbxAutoSend.Text = "自动发送";
            this.cbxAutoSend.UseVisualStyleBackColor = true;
            this.cbxAutoSend.CheckedChanged += new System.EventHandler(this.cbxAutoSend_CheckedChanged);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(685, 497);
            this.Controls.Add(this.cbxAutoSend);
            this.Controls.Add(this.btnSend);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);
            this.PerformLayout();        }        #endregion        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.TextBox textBox1;
        private System.IO.Ports.SerialPort serialPort1;
        private System.Windows.Forms.Button btnSend;
        private System.Windows.Forms.Timer timeSend;
        private System.Windows.Forms.CheckBox cbxAutoSend;
    }
}

Answer 7

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;namespace ceshi1_1
{
    public partial class Form1 : Form
    {        delegate void HandleInterfaceUpdateDelegate(string text);  //委托，此为重点
        HandleInterfaceUpdateDelegate interfaceUpdateHandle;        //首次交互发送指令
        byte[] FirstCommand = new byte[] { 0xEF, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x03, 0x01, 0x00, 0x05 };
        byte[] SecondCommand = new byte[] { 0xEF, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x03, 0x0A, 0x00, 0x0E };
        public Form1()
        {
            InitializeComponent();
            interfaceUpdateHandle = new HandleInterfaceUpdateDelegate(UpdateTextBox); //实例化委托对象
            serialPort1.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(serialPort1_DataReceived);
        }        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM3";
            serialPort1.BaudRate = 9600;
            serialPort1.DataBits = 8;
            serialPort1.Open();
            button1.Enabled = false;
            if (this.serialPort1.IsOpen)
            {
                serialPort1.Write(FirstCommand, 0, FirstCommand.Length);
            }
            else
            {
                //MessageBox.Show("串口未打开！");
                button1_Click(sender, e);
            }
        }        private void UpdateTextBox(string temp)
        {
            temp = temp.Replace("-", "");            this.textBox1.Text += temp;
        }        private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {            try
            {
                byte[] data = new byte[this.serialPort1.BytesToRead];
                serialPort1.Read(data, 0, data.Length);
                this.Invoke(interfaceUpdateHandle, new string[] { BitConverter.ToString(data) });
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
        void RevAppend(string str)
        {
            if (textBox1.InvokeRequired)
                this.Invoke(new MethodInvoker(delegate
                {
                    textBox1.AppendText(str); ;
                    textBox1.SelectionStart = int.MaxValue;
                    textBox1.SelectionLength = 1;
                    textBox1.ScrollToCaret();
                }));
            else
            {
                textBox1.AppendText(str);
                textBox1.SelectionStart = int.MaxValue;
                textBox1.SelectionLength = 1;
                textBox1.ScrollToCaret();
            }
        }        private void btnSend_Click(object sender, EventArgs e)
        {
            
            if (this.serialPort1.IsOpen)
            {
                serialPort1.Write(FirstCommand, 0, FirstCommand.Length);
            }
            else
            {
                MessageBox.Show("串口未打开！");
            }
        }        private void timeSend_Tick(object sender, EventArgs e)
        {
            if (serialPort1.IsOpen)
            {
                serialPort1.Write(FirstCommand, 0, FirstCommand.Length);
            }
            else
            {
                this.timeSend.Enabled = false;
                MessageBox.Show("串口已关闭！");
            }
        }        private void cbxAutoSend_CheckedChanged(object sender, EventArgs e)
        {
            if (this.cbxAutoSend.Checked) { this.timeSend.Enabled = true; }
            else { this.timeSend.Enabled = false; }
        }      
    }
}

Answer 8

一般用DataReceived事件来通知你串口已经接收到了数据。然后你再对数据进行格式处理后，显示出来。

Answer 9

用comassistant测试下，看看是否有接收到数据

Answer 10

这本破书早就该扔了
如果不是虚拟串口，哪明com10
一个示例程序，有必要进行base64编码？？按钮点击
serialPort1.ReadLine()
这样就一定能读取到数据吗？好笑

Answer 11

看我以前的一个有关串口的回复
http://topic.csdn.net/u/20120420/11/795f7914-1899-4161-9cc3-3e4d6feeac96.html