实例介绍
【实例截图】
【核心代码】
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.Globalization;
using NativeWifi;
/*
string sIn = "FF";
textBox5.Text = "";
foreach (char c in sIn) //用字符编码
{
textBox5.Text = ((int)c).ToString();
}
* //textBox5.Text = Convert.ToDecimal("2.9853").ToString("0.00"); //保留小数
变量.ToString()
字符型转换 转为字符串
12345.ToString("n"); //生成 12,345.00
12345.ToString("C"); //生成 ¥12,345.00
12345.ToString("e"); //生成 1.234500e 004
12345.ToString("f4"); //生成 12345.0000
12345.ToString("x"); //生成 3039 (16进制)
12345.ToString("p"); //生成 1,234,500.00%
* 字串变量.Replace("子字串","替换为")
字串替换
如:
string str="中国";
str=str.Replace("国","央"); //将国字换为央字
Response.Write(str); //输出结果为“中央”
* 一、
1、取字符串的前i个字符
(1)string str1=str.Substring(0,i);
(2)string str1=str.Remove(i,str.Length-i);
2、去掉字符串的前i个字符
string str1=str.Remove(0,i);
string str1=str.SubString(i);
3.提取字符串中的第i个字符开始的长度为j的字符串;
string str = "GTAZB_JiangjBen_123";
int start=3,length=8;
Console.WriteLine(str.Substring(start-1, length));
4、从右边开始去掉i个字符:
string str1=str.Substring(0,str.Length-i);
string str1=str.Remove(str.Length-i,i);
5、
6 、如果字符串中有"abc"则替换成"ABC"
str=str.Replace("abc","ABC");
7、c#截取字符串最后一个字符的问题!!!!!!!!!!!!!!!!!!!!!
str1.Substring(str1.LastIndexOf(",") 1);
8、C# 截取字符串最后一个字符
k = k.Substring(k.Length-1, 1);
*/
using System.IO.Ports;
namespace SerialCommunicate
{
public partial class Form1 : Form
{
byte[] bufferID = new byte[8];
bool Button1Statue;
int count,idcount,timecnt, num32;
string RecordID1, RecordID2, RecordID3;
public delegate void DeleUpdateTextbox(string dateRe);
public int iTextbox1 = 0;
public Form1()
{
InitializeComponent();
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
}
private void SearchAndAddSerialToComboBox(SerialPort MyPort, ComboBox MyBox)
{ //将可用端口号添加到ComboBox
string[] MyString = new string[20]; //最多容纳20个,太多会影响调试效率
string Buffer; //缓存
MyBox.Items.Clear(); //清空ComboBox内容
for (int i = 1; i < 20; i ) //循环
{
try //核心原理是依靠try和catch完成遍历
{
Buffer = "COM" i.ToString();
MyPort.PortName = Buffer;
MyPort.Open(); //如果失败,后面的代码不会执行
MyString[i - 1] = Buffer;
MyBox.Items.Add(Buffer); //打开成功,添加至下俩列表
MyPort.Close(); //关闭
}
catch
{
}
}
MyBox.Text = MyString[0]; //初始化
}
private void button1_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen) //串口打开就关闭
{
try
{
serialPort1.Close();
}
catch { } //确保万无一失
//button1.Text = "打开串口";
button1.BackgroundImage = Properties.Resources.light_off; //灭
Button1Statue = false;
}
else
{
try
{
serialPort1.PortName = comboBox1.Text; //端口号
serialPort1.BaudRate = 19200;
serialPort1.Open(); //打开端口
//button1.Text = "关闭串口";
button1.BackgroundImage = Properties.Resources.on;//亮
Button1Statue = true;
}
catch
{
MessageBox.Show("串口打开失败", "错误");
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
/*for (int i = 1; i < 20; i )
{
comboBox1.Items.Add("COM" i.ToString());
}
comboBox1.Text = "COM1";//串口号多额默认值
comboBox2.Text = "4800";//波特率默认值
*/
/*****************非常重要************************/
serialPort1.DataReceived = new SerialDataReceivedEventHandler(port_DataReceived);//必须手动添加事件处理程序
SearchAndAddSerialToComboBox(serialPort1, comboBox1);
count = 0; idcount = 0; timecnt = 0;
label8.Text = Convert.ToString(System.DateTime.Now);
}
//使用Control.Invoke
private void button4_Click(object sender, EventArgs e)
{
SearchAndAddSerialToComboBox(serialPort1, comboBox1);
}
private void UpdateTextbox(string dataRe)
{
if (iTextbox1 == 0)
{
this.textBox1.Text = dataRe;
iTextbox1 ;
}
else
{
textBox1.AppendText(dataRe);
}
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)//串口数据接收事件
{
/* int readSize = serialPort1.ReadBufferSize;//获取串口接收到的字节数
byte[] buffer = new byte[readSize];// 重新定义缓存区大小
serialPort1.Read(buffer,0,readSize);
//string str = System.Text.Encoding.Default.GetString(buffer);//byte[]转成string:
//byte[] byteArray = System.Text.Encoding.Default.GetBytes(str);//string类型转成byte[]
//frm1.changed = new Form1.Form1Handle(button_changed);//改变值的事件 public delegate void Form2Handle(string s);
string str2 = Convert.ToString(buffer[0], 16).ToUpper();//转换为大写十六进制字符串
*/
string dataRe;
byte[] byteRead = new byte[serialPort1.BytesToRead];// 重新定义
DeleUpdateTextbox deleupdatetextbox = new DeleUpdateTextbox(UpdateTextbox);
serialPort1.Read(byteRead, 0, byteRead.Length);//获取串口接收到的字
/* if (!radioButton3.Checked)//如果接收模式为字符模式
{
dataRe = Encoding.Default.GetString(byteRead);//接收的byte[]转成string:
textBox2.Invoke(deleupdatetextbox, dataRe);
}
else
{*/
for (int i = 0; i < byteRead.Length; i )
{
byte temp = byteRead[i];
dataRe = temp.ToString("X2");// " ";//字符串格式控制符 X为十六进制 2为每次都是两位数
textBox1.Invoke(deleupdatetextbox, dataRe);
}
/* if (dataRe == "55")
{
for (int j = 0; j < byteRead.Length; j )
{ bufferID[j] = byteRead[i]; }
}*/
//textBox1.AppendText(dataRe);
// }
}
private void button5_Click(object sender, EventArgs e)
{
for (int i = 0; i <3; i )
{ textBox2.Text = bufferID[0].ToString(); }
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
string str, str2; int len;
// str2 = "55";
len = textBox1.Text.Length;
if (len >= 16)
{
str = textBox1.Text.Substring(0, 3);
if (str=="55A")
{
idcount = 1;
RecordID1 = textBox1.Text.Substring(6, 6);
textBox4.Text = textBox1.Text.Substring(4, 2);
if (textBox3.Text != RecordID1)
idcount = 0;
textBox3.Text = RecordID1;
label1.Text = idcount.ToString();
// j = textBox1.Text.Substring(0, 2);
count = 1;
switch (count)
{
case 1: RecordID1 = textBox1.Text.Substring(6, 6);
break;
case 2: RecordID2 = textBox1.Text.Substring(6, 6);
break;
case 3: RecordID3 = textBox1.Text.Substring(6, 6);
break;
}
if (count >= 3)
{
count = 0;
if ((String.Equals(RecordID1, RecordID2))&&(String.Equals(RecordID3, RecordID2)))
{
idcount = 1;
if (idcount > 99)
idcount = 0;
label1.Text = idcount.ToString();
textBox3.Text = RecordID1;
str2 = RecordID1.Substring(1, 5);//get 1-5
int dectemp = Convert.ToInt32(str2, 16); //转成10进制
textBox5.Text = Convert.ToString(dectemp);//change to string from dec
if (textBox5.TextLength < 5)
textBox5.Text = "000" Convert.ToString(dectemp);
else if (textBox5.TextLength <6)
textBox5.Text = "00" Convert.ToString(dectemp);
else if (textBox5.TextLength < 7)
textBox5.Text = "0" Convert.ToString(dectemp);
else
textBox5.Text = Convert.ToString(dectemp);
str2 = textBox5.Text;
str2 = str2.Insert(3, "-");
textBox5.Text = str2;
/* if (!radioButton5.Checked)//2gig
{
str = RecordID1.Substring(0, 1);//get 1-5
int dec2 = Convert.ToInt32(str, 16); //转成10进制
str=Convert.ToString(dec2);
textBox5.Text = str "-" textBox5.Text;
}*/
}
else
{
//textBox1.Text = "";
//textBox3.Text = "";
idcount = 0;
}
RecordID1 = "";
RecordID2 = "";
RecordID3 = "";
}
}
textBox1.Text = "";
}
if (len < 16)
{
timer1.Enabled = true;
}
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
/* string str;
int len;
len = textBox3.Text.Length;
str = textBox3.Text;
if (len >= 16)
{
if (str!= RecordID1)
textBox3.Text = "";
}*/
}
private void timer1_Tick(object sender, EventArgs e)
{
string j; int len; bool result;
// str = textBox1.Text;
len = textBox1.Text.Length;
timecnt = 1;
if (timecnt > 6)
{ timer1.Enabled = false;
textBox1.Text = "";
timecnt = 0;
}
// for (int i = 0; i < 3; i )
// { textBox5.Text = bufferID[i].ToString(); }
/*
string str2 = Convert.ToString(bufferID[0], 16).ToUpper();//转换为大写十六进制字符串
textBox3.AppendText(str2);
str2 = Convert.ToString(bufferID[1], 16).ToUpper();//转换为大写十六进制字符串
textBox3.AppendText(str2);
str2 = Convert.ToString(bufferID[2], 16).ToUpper();//转换为大写十六进制字符串
textBox3.AppendText(str2);*/
/*if (len >= 16)
{
textBox3.Text = "";
for (int i = 0; i < 8; i )
{
string str2 = Convert.ToString(bufferID[i], 16).ToUpper();//转换为大写十六进制字符串
textBox3.AppendText(str2);
}
// j = textBox1.Text.Substring(0, 2);
count = 1;
switch (count)
{
case 1: RecordID1 = textBox1.Text.Substring(6, 6);
break;
case 2: RecordID2 = textBox1.Text.Substring(6, 6);
break;
case 3: RecordID3 = textBox1.Text.Substring(6, 6);
break;
}
if (count >= 3)
{
count = 0;
if ((String.Equals(RecordID1, RecordID2))&&(String.Equals(RecordID3, RecordID2)))
{
idcount = 1;
if (idcount > 99)
idcount = 0;
label1.Text = idcount.ToString();
textBox3.Text = RecordID1;
}
else
{
textBox1.Text = "";
textBox3.Text = "";
idcount = 0;
}
RecordID1 = "";
RecordID2 = "";
RecordID3 = "";
}
}*/
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
try
{
serialPort1.Close();//关闭串口
// button1.Enabled = true;//打开串口按钮可用
// button2.Enabled = true;//关闭串口按钮不可用
this.Close();
}
catch (Exception err)//一般情况下关闭串口不会出错,所以不需要加处理程序
{
}
}
private void button3_Click(object sender, EventArgs e)
{
byte[] Data = new byte[1];//作用同上集
if (serialPort1.IsOpen)//判断串口是否打开,如果打开执行下一步操作
{
if (textBox2.Text != "")
{
if (!radioButton1.Checked)//如果发送模式是字符模式
{
try
{
serialPort1.WriteLine(textBox2.Text);//写数据
}
catch (Exception err)
{
MessageBox.Show("串口数据写入错误", "错误");//出错提示
serialPort1.Close();
button1.Enabled = true;//打开串口按钮可用
button2.Enabled = false;//关闭串口按钮不可用
}
}
else
{
for (int i = 0; i < (textBox2.Text.Length - textBox2.Text.Length % 2) / 2; i )//取余3运算作用是防止用户输入的字符为奇数个
{
Data[0] = Convert.ToByte(textBox2.Text.Substring(i * 2, 2), 16);
serialPort1.Write(Data, 0, 1);//循环发送(如果输入字符为0A0BB,则只发送0A,0B)
}
if (textBox2.Text.Length % 2 != 0)//剩下一位单独处理
{
Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length-1, 1), 16);//单独发送B(0B)
serialPort1.Write(Data, 0, 1);//发送
}
}
}
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void groupBox1_Enter(object sender, EventArgs e)
{
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
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