实例介绍
【实例简介】
【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.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace 串口助手
{
public partial class Form1 : Form
{
SerialPort sp = null;
bool isOpen = false;
bool isSetProperty = false;
bool ishex = false;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.MaximumSize = this.Size;
this.MinimumSize = this.Size;
this.MaximizeBox = false;
for (int i = 0; i < 10; i )
{
comboBox1.Items.Add("COM" (i 1).ToString());
}
comboBox1.SelectedIndex = 0;
comboBox2.Items.Add("1200");
comboBox2.Items.Add("2400");
comboBox2.Items.Add("4800");
comboBox2.Items.Add("9600");
comboBox2.Items.Add("19200");
comboBox2.Items.Add("38400");
comboBox2.Items.Add("43000");
comboBox2.Items.Add("56000");
comboBox2.Items.Add("57600");
comboBox2.Items.Add("115200");
comboBox2.SelectedIndex = 9;
comboBox3.Items.Add("0");
comboBox3.Items.Add("1");
comboBox3.Items.Add("1.5");
comboBox3.Items.Add("2");
comboBox3.SelectedIndex = 1;
comboBox4.Items.Add("无");
comboBox4.Items.Add("奇校验");
comboBox4.Items.Add("偶校验");
comboBox4.SelectedIndex = 0;
comboBox5.Items.Add("8");
comboBox5.Items.Add("7");
comboBox5.Items.Add("6");
comboBox5.Items.Add("5");
comboBox5.SelectedIndex = 0;
radioButton1.Checked = true;
}
private void groupBox1_Enter(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
}
private void comboBox5_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void label4_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
bool comExistence = false;
comboBox1.Items.Clear();
for (int i = 0; i < 10; i )
{
try
{
SerialPort sp = new SerialPort("COM" (i 1).ToString());
sp.Open();
sp.Close();
comboBox1.Items.Add("COM" (i 1).ToString());
comExistence = true;
}
catch (Exception)
{
continue;
}
}
if (comExistence)
{
comboBox1.SelectedIndex = 0;
}
else
{
MessageBox.Show("没有找到可用串口！","错误提示");
}
}
private bool CheckPortSetting()
{
if (comboBox1.Text.Trim() == "") return false;
if (comboBox2.Text.Trim() == "") return false;
if (comboBox3.Text.Trim() == "") return false;
if (comboBox4.Text.Trim() == "") return false;
if (comboBox5.Text.Trim() == "") return false;
return true;
}
private bool CheckSendData()
{
if (textBox2.Text.Trim() == "") return false;
return true;
}
#region 接收显示窗口
private void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
System.Threading.Thread.Sleep(100);
this.Invoke((EventHandler)(delegate
{
if (ishex == false)
{
textBox1.Text = sp.ReadLine();
}
else
{
Byte[] ReceivedData = new Byte[sp.BytesToRead];
sp.Read(ReceivedData, 0, ReceivedData.Length);
String RecvDataText = null;
for (int i = 0; i < ReceivedData.Length; i )
{
RecvDataText = ("0x" ReceivedData[i].ToString("X2") " ");
}
textBox1.Text = RecvDataText;
}
sp.DiscardInBuffer();
}));
}
#endregion
private void SetPortProperty()
{
sp = new SerialPort();
sp.PortName = comboBox1.Text.Trim();
sp.BaudRate = Convert.ToInt32(comboBox2.Text.Trim());
float f = Convert.ToSingle(comboBox3.Text.Trim());
if (f == 0)
{
sp.StopBits = StopBits.None;
}
else if(f==1.5)
{
sp.StopBits = StopBits.OnePointFive;
}
else if(f==1)
{
sp.StopBits = StopBits.One;
}
else if(f==2)
{
sp.StopBits = StopBits.Two;
}
else
{
sp.StopBits = StopBits.One;
}
sp.DataBits = Convert.ToInt16(comboBox5.Text.Trim());
string s = comboBox4.Text.Trim();
if(s.CompareTo("无")==0)
{
sp.Parity = Parity.None;
}
else if(s.CompareTo("奇校验")==0)
{
sp.Parity = Parity.Odd;
}
else if(s.CompareTo("偶校验")==0)
{
sp.Parity = Parity.Even;
}
else
{
sp.Parity = Parity.None;
}
sp.ReadTimeout = -1;
sp.RtsEnable = true;
sp.DataReceived = new SerialDataReceivedEventHandler(sp_DataReceived);
if (radioButton2.Checked)
{
ishex = true;
}
else
{
ishex = false;
}
}
private void button4_Click(object sender, EventArgs e)
{
if (isOpen)
{
try
{
sp.WriteLine(textBox2.Text);
}
catch (Exception)
{
MessageBox.Show("发送数据时发生错误", "错误提示");
return;
}
}
else
{
MessageBox.Show("串口未打开", "错误提示");
return;
}
if(!CheckSendData())
{
MessageBox.Show("请输入要发送的数据", "错误提示");
return;
}
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
if (isOpen == false)
{
if (!CheckPortSetting())
{
MessageBox.Show("串口未设置", "错误提示");
return;
}
if (!isSetProperty)
{
SetPortProperty();
isSetProperty = true;
}
try
{
sp.Open();
isOpen = true;
button2.Text = "关闭串口";
comboBox1.Enabled = false;
comboBox2.Enabled = false;
comboBox3.Enabled = false;
comboBox4.Enabled = false;
comboBox5.Enabled = false;
radioButton1.Enabled = false;
radioButton2.Enabled = false;
}
catch (Exception)
{
isSetProperty = false;
isOpen = false;
MessageBox.Show("串口无效或已被占用", "错误提示");
}
}
else
{
try
{
sp.Close();
isOpen = false;
isSetProperty = false;
button2.Text = "打开串口";
comboBox1.Enabled = true;
comboBox2.Enabled = true;
comboBox3.Enabled = true;
comboBox4.Enabled = true;
comboBox5.Enabled = true;
radioButton1.Enabled = true;
radioButton2.Enabled = true;
}
catch (Exception)
{
}
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text = "";
textBox2.Text = "";
}
}
}
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