form1.cs

vs2005串口编程示例,好多例子,是学习串口编程方面不错的资料

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Runtime.InteropServices;

namespace Ex10_05
{
    public partial class Form1 : Form
    {

         public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //初始化
            int icdev = IC.auto_init(0, 9600);
            if (icdev < 0)
                MessageBox.Show("端口初始化失败,请检查接口线是否连接正确。","错误提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
            int md = IC.setsc_md(icdev, 1); //设备密码格式
            unsafe
            {
                Int16 status = 0;
                Int16 result = 0;
                result = IC.get_status(icdev, &status);
                if (result != 0)
                {
                    MessageBox.Show("设备当前状态错误！");
                    int d1 = IC.ic_exit(icdev);   //关闭设备
                    return;
                }
                if (status != 1)
                {
                    MessageBox.Show("请插入ＩＣ卡");
                    int d2 = IC.ic_exit(icdev);   //关闭设备
                    return;
                }
            }
            unsafe
            {
                //卡的密码默认为6个F（密码为：ffffff），1个F的16进制是15,2个F的16进制是255。
                byte[] pwd = new byte[3] { 255, 255, 255 };
                //byte[] pwd = new byte[3] { 0xff, 0xff, 0xff };
                //char[] pass=new ch{0xff,0xff,0xff};
                Int16 checkIC_pwd = IC.Csc_4442(icdev, 3, pwd);
                if (checkIC_pwd < 0)
                {
                    MessageBox.Show("ＩＣ卡密码错误！");
                    return;
                }
                char str = 'a';
                int write=-1;
                for (int j = 0; j < textBox1.Text.Length; j++)
                {
                    str = Convert.ToChar(textBox1.Text.Substring(j, 1));
                    write = IC.swr_4442(icdev, 33 + j, textBox1.Text.Length, &str);
                }
                if (write == 0)
                {
                    int beep = IC.dv_beep(icdev, 20);  //发出蜂鸣声
                    MessageBox.Show("数据已成功写入ＩＣ卡中！");
                }
                else
                    MessageBox.Show("数据写入ＩＣ卡失败！");
            }
            int d = IC.ic_exit(icdev);  //关闭设备
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}

[StructLayout(LayoutKind.Sequential)]
public unsafe class IC
{
    //对设备进行初始化
    [DllImport("Mwic_32.dll", EntryPoint = "auto_init", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern int auto_init(int port, int baud);
    //设备密码格式
    [DllImport("Mwic_32.dll", EntryPoint = "setsc_md", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern int setsc_md(int icdev, int mode);
    //获取设备当前状态
    [DllImport("Mwic_32.dll", EntryPoint = "get_status", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern Int16 get_status(int icdev, Int16* state);
    //关闭设备通讯接口
    [DllImport("Mwic_32.dll", EntryPoint = "ic_exit", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern int ic_exit(int icdev);
    //使设备发出蜂鸣声
    [DllImport("Mwic_32.dll", EntryPoint = "dv_beep", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern int dv_beep(int icdev, int time);
    //向IC卡中写数据
    [DllImport("Mwic_32.dll", EntryPoint = "swr_4442", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern int swr_4442(int icdev, int offset, int len, char* w_string);
    //核对卡密码  
    [DllImport("Mwic_32.dll", EntryPoint = "csc_4442", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
    public static extern Int16 Csc_4442(int icdev, int len, [MarshalAs(UnmanagedType.LPArray)] byte[] p_string);
}