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   源码介绍

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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;
using System.Data.OleDb;

namespace Ex13_18
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //机器号码，当参数为空时，函数自动获取设备信息
            txtJQHM.Text = GMS.GSMModemGetSnInfoNew(txtCOM.Text, txtBTL.Text);
            txtCOM.Text = GMS.GSMModemGetDevice();　　//ＣＯＭ１
            txtBTL.Text = GMS.GSMModemGetBaudrate();　　//波特率
        }

        private void btnResvice_Click(object sender, EventArgs e)
        {
            //连接设备
            if (GMS.GSMModemInitNew(txtCOM.Text, txtBTL.Text, null, null, false, txtPower.Text) == false)
            {
                MessageBox.Show("连接失败!"   GMS.GSMModemGetErrorMsg(), "提示", MessageBoxButtons.OK);
                return;
            }

            //接收短信
            string content = GMS.GSMModemSMSReadAll(0);
            if (content == null)
            {
                this.getMessage();
                return;
            }
            content = content.Replace("||", "|"); // 替换||为|
            string[] str_sp = content.Split('|');// 进行分离
            int k = 0;
            string[,] str_Sp = new string[2, str_sp.Length / 2];

            for (int i = 0; i < str_sp.Length / 2; i  )
            {
                for (int j = 0; j < 2; j  )
                {
                    str_Sp[j, i] = str_sp[k];
                    if (k % 2 != 0)
                        this.InsertMessage("insert into RecivedBox (Mobile,Content,reciveTime)values('"   Convert.ToString(str_Sp[0, i])   "','"   Convert.ToString(str_Sp[1, i])   "','"   DateTime.Now.ToString()   "') ");
                    k  ;
                }
            }
            this.getMessage();
        }
        private void getMessage()
        {
            OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source="   "message.mdb"   ";Persist Security Info=False");
            OleDbDataAdapter dap = new OleDbDataAdapter("select mobile as 手机号码,content as 短信息,reciveTime as 日期 from RecivedBox", con);
            DataSet ds = new DataSet();
            dap.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0].DefaultView;
        }

        private void InsertMessage(string strSql)
        {
            //将短信息内容添加到数据库中
            OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source="   "message.mdb"   ";Persist Security Info=False");
            con.Open();
            OleDbCommand cmd = new OleDbCommand(strSql, con);
            cmd.ExecuteNonQuery();
            con.Close();

        }
    }
}
class GMS
{
    //初始化gsm modem,并连接gsm modem
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemInitNew",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern bool GSMModemInitNew(
        string device,
        string baudrate,
        string initstring,
        string charset,
        bool swHandshake,
        string sn);
    //获取短信猫新的标识号码
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemGetSnInfoNew",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern string GSMModemGetSnInfoNew(string device, string baudrate);
    //获取当前通讯端口
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemGetDevice",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern string GSMModemGetDevice();
    //获取当前通讯波特率
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemGetBaudrate",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern string GSMModemGetBaudrate();
    //断开连接并释放内存空间		
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemRelease",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern void GSMModemRelease();
    //取得错误信息	
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemGetErrorMsg",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern string GSMModemGetErrorMsg();
    //发送短信息
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemSMSsend",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern bool GSMModemSMSsend(
        string serviceCenterAddress,
        int encodeval,
        string text,
        int textlen,
        string phonenumber,
        bool requestStatusReport);
    //接收短信息返回字符串格式为:手机号码|短信内容||手机号码|短信内容||
    //RD_opt为１接收短信息后不做任何处理，０为接收后删除信息
    [DllImport("dllforvc.dll",
         EntryPoint = "GSMModemSMSReadAll",
         CharSet = CharSet.Ansi,
         CallingConvention = CallingConvention.StdCall)]
    public static extern string GSMModemSMSReadAll(int RD_opt);
}