IC卡操作功能实现

public partial class ICOperation : Form
{
    // 包含所有与IC卡交互的方法
    [StructLayout(LayoutKind.Sequential)]
    public unsafe class ICAPI
    {
        // 初始化IC卡读写器
        [DllImport("Mwic_32.dll", EntryPoint = "auto_init", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern int Initialize(int port, int baud);

        // 设置安全模式
        [DllImport("Mwic_32.dll", EntryPoint = "setsc_md", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern int SetSecurityMode(int icDevice, int mode);

        // 获取设备状态
        [DllImport("Mwic_32.dll", EntryPoint = "get_status", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern Int16 GetStatus(int icDevice, Int16* status);

        // 关闭设备
        [DllImport("Mwic_32.dll", EntryPoint = "ic_exit", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern int CloseDevice(int icDevice);

        // 发出蜂鸣声
        [DllImport("Mwic_32.dll", EntryPoint = "dv_beep", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern int Beep(int icDevice, int duration);

        // 向IC卡写入数据
        [DllImport("Mwic_32.dll", EntryPoint = "swr_4442", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingCOnvention= CallingConvention.StdCall)]
        public static extern int WriteToCard(int icDevice, int offset, int length, char* data);

        // 校验卡密码
        [DllImport("Mwic_32.dll", EntryPoint = "csc_4442", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingCOnvention= CallingConvention.Winapi)]
        public static extern Int16 CheckCardPassword(int icDevice, int length, [MarshalAs(UnmanagedType.LPArray)] byte[] password);
    }

    public ICOperation()
    {
        InitializeComponent();
    }

    private void OnWriteButtonClicked(object sender, EventArgs e)
    {
        int icDevice = ICAPI.Initialize(0, 9600);
        if (icDevice <0)
        {
            MessageBox.Show("端口初始化失败，请检查接口线是否连接正确。");
            return;
        }

        int securityMode = ICAPI.SetSecurityMode(icDevice, 1);
        unsafe
        {
            Int16 status = 0;
            Int16 result = ICAPI.GetStatus(icDevice, &status);
            if (result != 0)
            {
                MessageBox.Show("设备当前状态错误！");
                ICAPI.CloseDevice(icDevice);
                return;
            }
            if (status != 1)
            {
                MessageBox.Show("请插入IC卡");
                ICAPI.CloseDevice(icDevice);
                return;
            }
        }

        unsafe
        {
            byte[] password = { 255, 255, 255 };
            Int16 passwordCheckResult = ICAPI.CheckCardPassword(icDevice, 3, password);
            if (passwordCheckResult <0)
            {
                MessageBox.Show("IC卡密码错误！");
                return;
            }

            for (int i = 0; i             {
                char data = textBox1.Text[i];
                int writeResult = ICAPI.WriteToCard(icDevice, 33 + i, 1, &data);
                if (writeResult != 0)
                {
                    MessageBox.Show("数据写入IC卡失败！");
                    ICAPI.CloseDevice(icDevice);
                    return;
                }
            }

            ICAPI.Beep(icDevice, 20);
            MessageBox.Show("数据已成功写入IC卡中！");
            ICAPI.CloseDevice(icDevice);
        }
    }

    private void OnExitButtonClicked(object sender, EventArgs e)
    {
        Application.Exit();
    }
}