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   源码介绍

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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;
using System.IO.Ports;

namespace smt
{
    public partial class SerialPortSetting : Form
    {
        private SerialPort mycom = new SerialPort();
        private StringBuilder builder = new StringBuilder();////避免在事件处理方法中反复的创建，定义到外面
        private long received_count = 0;//接收计数
        private long send_count = 0;//发送计数
        public SerialPortSetting()
        {    
            InitializeComponent();
           // mycom.NewLine = "\r\n";
           // mycom.RtsEnable = true;
            //mycom.DataReceived  = mycom_DataReceived;
        }

        private void comboBox4_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void SerialPortSetting_Load(object sender, EventArgs e)
        {
            ReadINISerInt();          
        }

        private void button_SetApp_Click(object sender, EventArgs e)
        {  
            try
            {   
                mycom.PortName = (comboBox_PortName.Text);
                mycom.BaudRate = int.Parse(comboBox_BaudRate.Text);
                mycom.DataBits = int.Parse(combobox_DataBits.Text);
               // mycom.StopBits = comboBox_StopBits.Text;
                //mycom.StopBits= 
                textBox_TestMsg.Text = "串口设置成功！";
            }
            catch
            {
                if (comboBox_PortName.Text == "")
                {
                    MessageBox.Show("端口不能为空!");
                }
                else if (comboBox_BaudRate.Text == "")
                {
                    MessageBox.Show("波特率不能为空!");
                }
                else if (combobox_DataBits.Text== "")
                {
                    MessageBox.Show("数据位不能为空!");
                }
                else
                {
                    MessageBox.Show("未知错误!");
                }
            }
            Console.WriteLine("PortName is {0};rate is {1};databits is {2}",mycom.PortName,mycom.BaudRate,mycom.DataBits);
            
          //  mycom.Parity = int.Parse(comboBox_Parity.Text);
        }

        private void button_PortOpen_Click(object sender, EventArgs e)
        {
            string button_PortOpen_Temp = textBox_TestMsg.Text;       
            try
            {
                if (button_PortOpen.Text == "打开串口")
                {
                    mycom.Open();
                    button_PortOpen.Text = "关闭串口";
                    textBox_TestMsg.Text = button_PortOpen_Temp   "\r\n串口已打开！";
                   
                }
                else
                {
                    mycom.Close();
                    button_PortOpen.Text = "打开串口";
                    textBox_TestMsg.Text = button_PortOpen_Temp   "\r\n串口已关闭！";
                    
                    
                }
            }
            catch
            {
                MessageBox.Show(" 串口设置错误！");
            }
        }

        private void button_send_Click(object sender, EventArgs e)
        {
            try
            {
                if (radioButton2.Checked == true)
                {
                    if (textBox_SendData.TextLength <= 4)
                    {
                        int SendData = int.Parse(textBox_SendData.Text, System.Globalization.NumberStyles.HexNumber);
                        byte[] sd_16 = new byte[2];
                        sd_16[0] = (byte)(SendData);
                        sd_16[1] = (byte)(SendData >> 8);
                        mycom.Write(sd_16, 0, sd_16.Length);
                        textBox_TestMsg.Text  = ("\r\n正在发送十六进制数：\r\n"   "0x"   textBox_SendData.Text);                    
                    }
                    else
                    {
                        MessageBox.Show("数据格式不对！正确应为xx或xxxx");
                    }
                }
                if (radioButton1.Checked == true)
                {                  
                        int SendData = int.Parse(textBox_SendData.Text, System.Globalization.NumberStyles.Integer);
                        if (SendData <= 65535)
                        {
                            byte[] sd_10 = new byte[2];
                            sd_10[0] = (byte)(SendData);
                            sd_10[1] = (byte)(SendData >> 8);
                            mycom.Write(sd_10, 0, sd_10.Length);
                            textBox_TestMsg.Text  = ("\r\n正在发送十进制数：\r\n"   textBox_SendData.Text);
                        }
                        else
                        {
                            MessageBox.Show("数据格式不对！数据应小于65536");
                        }
                }
                if (radioButton3.Checked == true)
                {
                    if (textBox_SendData.TextLength <= 8)
                    {
                        int temp1_2 = int.Parse(textBox_SendData.Text, System.Globalization.NumberStyles.Integer);
                        int temp2_2 = temp1_2 % 10 * 1   temp1_2 / 10 % 10 * 2   temp1_2 / 100 % 10 * 4   temp1_2 / 1000 % 10 * 8
                          temp1_2 / 10000 % 10 * 16   temp1_2 / 100000 % 10 * 32   temp1_2 / 1000000 % 10 * 64   temp1_2 / 10000000 % 10 * 128;
                        byte[] sd = new byte[1];
                        sd[0] = (byte)(temp2_2);
                        mycom.Write(sd, 0, sd.Length);
                        textBox_TestMsg.Text  = ("\r\n正在发送二进制数：\r\n"   textBox_SendData.Text);
                    }
                    else
                    {
                        MessageBox.Show("数据格式不对！数据位应不大于8位！");
                    }
                }
            }
            catch
            {
                MessageBox.Show("数据为空或串口未打开！");
            }
        
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBox_TestMsg.Clear();
        }

        private void button_SetApp_Click_1(object sender, EventArgs e)
        {
            try
            {
                mycom.PortName = comboBox_PortName.Text;
                mycom.DataBits = int.Parse(combobox_DataBits.Text);
                mycom.BaudRate = int.Parse(comboBox_BaudRate.Text);
                textBox_TestMsg.Text= "串口设置成功！";
            }
            catch
            {
                MessageBox.Show(" 串口设置错误!");
            }
        }
    }
}