using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp2
{
public partial class frm_SerianTest : Form
{
/// <summary>
/// frm_SerianTest构造函数
/// </summary>
public frm_SerianTest()
{
InitializeComponent();//部件初始化
}
private SerialPort SerialPort_0 = new SerialPort();//实例化串口设备
//private Encoding Encoding_0 = Encoding.Default;//选用默认编码模式
/// <summary>
/// 定时器事件:实现系统时间获取
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timer1_Tick(object sender, EventArgs e)
{
//实现系统时间显示
Lbl_SysTime.Text = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");
}
/// <summary>
/// 窗口加载事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void frm_SerianTest_Load(object sender, EventArgs e)
{
timer1.Interval = 1000;//时间间隔1000 单位:ms
timer1.Start();//启用间隔时间事件
timer1.Tick += timer1_Tick;
//获取可用端口号
string[] Ports = SerialPort.GetPortNames();
if (Ports.Length>0)//获取数组长度大于0
{
cmb_Port.DataSource = Ports;//获取到的端口号赋值给Cmb_Port
}
//波特率设置
int[] Bauds = { 1200, 2400, 4800, 9600, 12800, 115200 };
cmb_BaudRate.DataSource = Bauds;
cmb_BaudRate.SelectedIndex = 3;//开机默认9600
//校验位设置(typeof:可以取得变量的类型，或者表达式的类型)
cmb_ParityBit.DataSource = Enum.GetNames(typeof(Parity));//获取Parity枚举的各名称;
//数据位设置
int[] DataBits = { 5, 6, 7, 8 };
cmb_DateBit.DataSource = DataBits;
cmb_DateBit.SelectedIndex = 3;
//停止位设置
cmb_StopBit.DataSource = Enum.GetNames(typeof(StopBits));//获取Parity枚举的各名称;
cmb_StopBit.SelectedIndex = 1;
}
/// <summary>
/// 刷新可用端口事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn_Refresh_Click(object sender, EventArgs e)
{
string[] Ports = SerialPort.GetPortNames();//获取电脑中可用的端口
if (Ports.Length > 0)
{
cmb_Port.DataSource = Ports;
}
}
/// <summary>
/// 与虚拟串口设备建立连接事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn_ConnectReader_Click(object sender, EventArgs e)
{
if (btn_ConnectReader.Text == "连接")
{
if (SerialPort_0.IsOpen)//如果已经建立连接则先断开
{
SerialPort_0.Close();
}
try //(*Trim()是去空格*)
{
SerialPort_0.PortName = cmb_Port.Text.Trim();
SerialPort_0.BaudRate = Convert.ToInt32(cmb_BaudRate.Text.Trim());
SerialPort_0.DataBits = Convert.ToInt32(cmb_DateBit.Text.Trim());
SerialPort_0.Parity = (Parity)Enum.Parse(typeof(Parity), cmb_ParityBit.Text.Trim(), true);//将comboBox中的字符串转换为Parity枚举类型
SerialPort_0.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmb_StopBit.Text.Trim(), true);//将comboBox中的字符串转换为StopBits枚举类型
SerialPort_0.Encoding = Encoding.Default;//选用默认编码方式
SerialPort_0.ReceivedBytesThreshold = 1;//默认缓存区为1个字节
SerialPort_0.DataReceived += SerialPort_0_DataReceived;
SerialPort_0.Open();//打开连接
//MessageBox.Show("连接成功");
Log("连接成功!" );
//禁用众多通信参数配置选项
btn_Refresh.Enabled = false;
btn_ConnectReader.Text = "断开";
cmb_Port.Enabled = false;
cmb_BaudRate.Enabled = false;
cmb_DateBit.Enabled = false;
cmb_StopBit.Enabled = false;
cmb_ParityBit.Enabled = false;
}
catch (Exception ex)
{
//MessageBox.Show("连接失败"+ex.Message);
Log("连接失败!" + ex.Message);
}
}
else if (btn_ConnectReader.Text == "断开")
{
SerialPort_0.Close();
//MessageBox.Show("断开成功");
Log("已断开!");
//启用通信参数配置项
btn_Refresh.Enabled = true;
btn_ConnectReader.Text = "连接";
cmb_Port.Enabled = true;
cmb_BaudRate.Enabled = true;
cmb_DateBit.Enabled = true;
cmb_StopBit.Enabled = true;
cmb_ParityBit.Enabled = true;
}
}
private void SerialPort_0_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
try
{
//因为要访问UI资源，所以需要使用invoke方式同步ui
this.Invoke((EventHandler)(delegate
{
string result = string.Empty;
result = SerialPort_0.ReadExisting();
Log("扫码结果:" + result);
})
);
}
catch (Exception ex)
{
//响铃并显示异常给用户
//System.Media.SystemSounds.Beep.Play();
Log(ex.Message);
}
}
//通过ListView将信息显示
private void Log(string info)
{
Invoke(new Action(() =>
{
string time = DateTime.Now.ToString();
ListViewItem Lst = new ListViewItem(time);
Lst.SubItems.Add(info);
listView1.Items.Insert(0, Lst);
}));
}
private void btn_ManulCode_Click(object sender, EventArgs e)
{
if (tbox_ManulCode.Text==string.Empty)
{
Log("条码信息不能为空!");
}
else
{
Log("手动输入条码结果:" + tbox_ManulCode.Text);
tbox_ManulCode.Text = "";
}
}
private void btn_Send_Click(object sender, EventArgs e)
{
if (SerialPort_0.IsOpen)
{
if (tbox_SendData.Text != string.Empty)
{
try
{
SerialPort_0.Write(tbox_SendData.Text.Trim());
}
catch (Exception ex)
{
Log("发送失败," + ex);
}
Log("发送内容:" + tbox_SendData.Text);
}
else
{
Log("没有发送内容!");
}
}
else
{
Log("串口未打开!");
}
}
}
}
