C# LJYZN-105发卡机 NFC读取

仅用于“LJYZN-105发卡机”（产品相关资源：http://www.ljyzn.com/product_info.asp?id=202）

1) UI

2) Code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ReaderB;
namespace NFCReader
{
    public partial class Form1 : Form
    {
        //写入配置文件
        [DllImport("Kernel32.dll")]
        public static extern bool WritePrivateProfileString(string strAppName, string strKeyName, string strString, string strFileName);
        //读取配置文件
        [DllImport("Kernel32.dll")]
        public static extern int GetPrivateProfileString(string strAppName, string strKeyName, string strDefault, StringBuilder sbReturnString, int nSize, string strFileName);

        private byte fComAddr, fBaud = 5;
        private int frmcomportindex;
        private bool fIsInventoryScan;
        private string tcp_ip;
        private int tcp_port;
        private int com_port;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {            
            for (int i = 1; i < 13; i++)
            {
                comboBox1.Items.Add("Com" + i.ToString());
            }
            comboBox1.SelectedIndex = 0;
            button2.Enabled = false;
            timer1.Enabled = false;

            string strFileName = Application.StartupPath + "\Config.ini";
            StringBuilder stringBuilder = new StringBuilder(256);
            Form1.GetPrivateProfileString("config", "com", "", stringBuilder, 256, strFileName);
            if (!string.IsNullOrEmpty(stringBuilder.ToString().Trim()))
            {
                com_port = Convert.ToInt32(stringBuilder.ToString());
                comboBox1.SelectedIndex = com_port - 1;
                int result = StaticClassReaderB.OpenComPort(com_port, ref fComAddr, fBaud, ref frmcomportindex);
                if (result == 0)
                {
                    comboBox1.Enabled = false;
                    button1.Enabled = false;
                    button2.Enabled = true;
                    timer1.Enabled = true;
                }
                else
                {
                    MessageBox.Show("串口通讯错误", "信息提示");
                }

            }
            Form1.GetPrivateProfileString("config", "ip", "", stringBuilder, 256, strFileName);
            if (!string.IsNullOrEmpty(stringBuilder.ToString().Trim()))
            {
                textBox1.Text = tcp_ip = stringBuilder.ToString();
            }
            Form1.GetPrivateProfileString("config", "port", "", stringBuilder, 256, strFileName);
            if (!string.IsNullOrEmpty(stringBuilder.ToString().Trim()))
            {
                textBox2.Text = stringBuilder.ToString();
                tcp_port = Convert.ToInt32(stringBuilder.ToString());
            }
        }

        private void Button2_Click(object sender, EventArgs e)
        {
            if (frmcomportindex > 0)
            {
                StaticClassReaderB.CloseSpecComPort(this.frmcomportindex);
                button1.Enabled = true;
                button2.Enabled = false;
                comboBox1.Enabled = true;
                timer1.Enabled = false;
                //读取NFC卡状态的间隔时间
                timer1.Interval = 1000;
            }
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            int port = comboBox1.SelectedIndex + 1;
            int result = StaticClassReaderB.OpenComPort(port, ref fComAddr, fBaud, ref frmcomportindex);
            if (result == 0)
            {
                comboBox1.Enabled = false;
                button1.Enabled = false;
                button2.Enabled = true;
                timer1.Enabled = true;
            }
            else
            {
                MessageBox.Show("串口通讯错误", "信息提示");
            }
        }

        private void Timer1_Tick(object sender, EventArgs e)
        {
            if (fIsInventoryScan)
                return;
            this.fIsInventoryScan = true;
            this.Inventory();
            this.fIsInventoryScan = false;
        }

        private void Inventory()
        {
            int num = 0;
            int num2 = 0;
            byte[] array = new byte[5000];
            byte adrTID = 0;
            byte lenTID = 0;
            byte tidflag = 0;
            var result = StaticClassReaderB.Inventory_G2(ref this.fComAddr, adrTID, lenTID, tidflag, array, ref num2, ref num, this.frmcomportindex);
            if (result == 1 | result == 2 | result == 3 | result == 4 | result == 251)
            {
                byte[] array2 = new byte[num2];
                Array.Copy(array, array2, num2);
                string text = this.ByteArrayToHexString(array2);
                int num3 = 0;
                if (num == 0)
                {
                    if (listBox1.Items.Count > 0)
                    {
                        if (!listBox1.Items[listBox1.Items.Count - 1].ToString().Contains("[OFF]"))
                        {
                            string newItem = listBox1.Items[listBox1.Items.Count - 1].ToString().Replace("[ON]", "[OFF]");
                            listBox1.Items.RemoveAt(listBox1.Items.Count - 1);
                            listBox1.Items.Add(newItem);
                            listBox1.SelectedIndex = listBox1.Items.Count - 1;
                            //发送NFC卡离开信息
                            SendMessage(tcp_ip, tcp_port, newItem);
                        }
                    }
                    return;
                }
                int num4 = (int)array2[num3];
                string text2 = text.Substring(num3 * 2 + 2, num4 * 2);
                if (listBox1.Items.Count <= 0)
                {
                    listBox1.Items.Add(text2 + "[ON]");
                    //发送NFC靠近信息
                    SendMessage(tcp_ip, tcp_port, text2 + "[ON]");
                    listBox1.SelectedIndex = listBox1.Items.Count - 1;
                }
                else
                {
                    var lastItem = listBox1.Items[listBox1.Items.Count - 1].ToString();
                    if (lastItem != text2 + "[ON]")
                    {
                        listBox1.Items.Add(text2 + "[ON]");
                        //发送NFC靠近信息
                        SendMessage(tcp_ip, tcp_port, text2 + "[ON]");
                        listBox1.SelectedIndex = listBox1.Items.Count - 1;
                    }
                }
            }
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            if (frmcomportindex > 0)
            {
                StaticClassReaderB.CloseSpecComPort(this.frmcomportindex);
            }
        }

        private string ByteArrayToHexString(byte[] data)
        {
            StringBuilder stringBuilder = new StringBuilder(data.Length * 3);
            foreach (byte value in data)
            {
                stringBuilder.Append(Convert.ToString(value, 16).PadLeft(2, '0'));
            }
            return stringBuilder.ToString().ToUpper();
        }

        private void TextBox1_TextChanged(object sender, EventArgs e)
        {
            tcp_ip = textBox1.Text;
        }

        private void TextBox2_TextChanged(object sender, EventArgs e)
        {
            tcp_port = Convert.ToInt32(textBox2.Text);
        }

        private void SendMessage(string nodeAddress, int port,string arg)
        {
            //...
        }
    }
}