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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.Management;
using System.Diagnostics;

namespace Ex13_16
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            txtJQHM.Text = GMS.GSMModemGetSnInfoNew(txtCOM.Text, txtBTL.Text);　//机器号码
            txtCOM.Text = GMS.GSMModemGetDevice();　　//ＣＯＭ１
            txtBTL.Text = GMS.GSMModemGetBaudrate();　　//波特率
            labStatus.Text = "服务关闭中。。。。。";
        }

        private void Close_Windows()
        {
            try
            {
                //指定生成 WMI 连接所需的所有设置
                ConnectionOptions op = new ConnectionOptions();
                op.Username = txtUser.Text;  //远程计算机用户名称
                op.Password = txtPWD.Text;　　　//远程计算机用户密码
                //设置操作管理范围
                ManagementScope scope = new ManagementScope("\\\\"   txtIP.Text   "\\root\\cimv2", op);
                scope.Connect();  //将此 ManagementScope 连接到实际的 WMI 范围。
                ObjectQuery oq = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
                ManagementObjectSearcher query = new ManagementObjectSearcher(scope, oq);
                //得到WMI控制 
                ManagementObjectCollection queryCollection = query.Get();
                foreach (ManagementObject obj in queryCollection)
                {
                    obj.InvokeMethod("ShutDown", null); //执行关闭远程计算机
                }
            }
            catch(Exception ex)
            {
                Process p = new Process();
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;
                p.StartInfo.CreateNoWindow = true;
                p.Start();
                p.StandardInput.WriteLine("shutdown /s");
                p.StandardInput.WriteLine("exit");
            }

        }

        private void timer1_Tick(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 str = GMS.GSMModemSMSReadAll(1);
            if (str==null)
                return;
            if (str.Substring(str.IndexOf("|") 1, 2) == "关机")
            {
                this.Close_Windows();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (button1.Text == "开启服务")
            {
                timer1.Enabled = true;
                labStatus.Text = "关机命令采集中。。。。。";
                button1.Text = "停止服务";
            }
            else
            {
                timer1.Enabled = false;
                button1.Text = "开启服务";
                labStatus.Text = "服务关闭中。。。。。";
            }
        }
    }
}

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);
}