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   源码介绍

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进入CMOS参数设置。选择电源管理设置“Power Management Setup”菜单。
将局域网启动置为enable即可；
观察发现不同的CMOS的局域网启动名称不同。
注意一下关键字即可 LAN XXXXXX Power UP 
有这些关键字就可能是。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Runtime.InteropServices;
using System.Xml;
using System.IO;

namespace LanStartUp
{
    public partial class frmTelnet : Form
    {
        public frmTelnet()
        {
            InitializeComponent();
        }

        [DllImport("ws2_32.dll")]
        private static extern int inet_addr(string cp);
        [DllImport("IPHLPAPI.dll")]
        private static extern int SendARP(Int32 DestIP, Int32 SrcIP, ref Int64 pMacAddr, ref Int32 PhyAddrLen);
        int total;
        DataSet ds = null;
        private void button1_Click(object sender, EventArgs e)
        {
            if (File.Exists(@"Telnet.xml"))
            {
                //读取数据
                XmlDocument doc = new XmlDocument();
                doc.Load(@"Telnet.xml");

                XmlNodeList nodeList;
                XmlNode root = doc.DocumentElement;

                nodeList = root.SelectNodes("MacAddress");

                foreach (XmlNode Mac in nodeList)
                {
                    if (Mac.FirstChild.InnerText.ToString() != null || Mac.FirstChild.InnerText.ToString() != "")
                    {
                        AppendData();
                    }
                }
            }
            else
            {
                CreateXml();
            }

            //string time = dateTimePicker1.Text;
            //int setTime = (Convert.ToInt32(time.Substring(0, 2)) * 60   Convert.ToInt32(time.Substring(3, 2))) * 60   Convert.ToInt32(time.Substring(6, 2));
            //string t = DateTime.Now.ToLongTimeString();
            //int now = (Convert.ToInt32(t.Substring(0, 2)) * 60   Convert.ToInt32(t.Substring(3, 2))) * 60   Convert.ToInt32(t.Substring(6, 2));
            //total = setTime - now;
            //timer1.Enabled = true;        
        }

        //将xml数据填充到DataSet
        private void FillDataSet()
        {
            ds = new DataSet();
            FileStream fs;
            fs = new FileStream(@"Telnet.xml", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            ds.ReadXml(fs);
            fs.Close();
            timer1.Enabled = true;
        }

        //创建xml
        private void CreateXml()
        {
            File.Delete(@"Telnet.xml");
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.AppendChild(xmlDoc.CreateXmlDeclaration("1.0", "gb2312", null));//加入XML的声明段落
            xmlDoc.AppendChild(xmlDoc.CreateElement("Telnet"));//加入一个根元素
            XmlNode root = xmlDoc.SelectSingleNode("Telnet");//查找<Telnet>
            XmlElement xe1 = xmlDoc.CreateElement("MacAddress");//创建一个节点
            //xe1.SetAttribute("ip", "192.168.1.100");//设置该节点ip属性

            XmlElement xesub1 = xmlDoc.CreateElement("Mac");
            xesub1.InnerText = textBox1.Text;//设置文本节点
            xe1.AppendChild(xesub1);//添加到节点中
            XmlElement xesub2 = xmlDoc.CreateElement("Time");
            xesub2.InnerText = dateTimePicker2.Text   " "   dateTimePicker1.Text;
            xe1.AppendChild(xesub2);
            root.AppendChild(xe1);//添加到节点中
            xmlDoc.Save(@"Telnet.xml");
        }

         //追加数据
        private void AppendData()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load(@"Telnet.xml");
            XmlNode root = doc.DocumentElement;
            XmlElement MacAddress = doc.CreateElement("MacAddress");
            XmlElement Mac = doc.CreateElement("Mac");
            Mac.InnerText = textBox1.Text;
            XmlElement Time = doc.CreateElement("Time");
            Time.InnerText = dateTimePicker2.Text   " "   dateTimePicker1.Text;
            MacAddress.AppendChild(Mac);
            MacAddress.AppendChild(Time);
            root.AppendChild(MacAddress);
            doc.Save(@"Telnet.xml");
        }


        public static byte ConvertHexToBytes(string value)
        {
            int len = value.Length / 2;
            byte[] ret = new byte[len];
            for (int i = 0; i < len; i  )
                ret[i] = (byte)(Convert.ToInt32(value.Substring(i * 2, 2), 16));
            return ret[0];
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (textBox2.Text == "")
            {
                MessageBox.Show("请输入正确的IP!");
            }
            else
            {
                textBox1.Text = GetMacAddress(textBox2.Text);
            }
        }

        private string GetMacAddress(string hostip)//获取远程IP（不能跨网段）的MAC地址
        {
            string Mac = "";
            try
            {
                Int32 ldest = inet_addr(hostip); //将IP地址从 点数格式转换成无符号长整型
                Int64 macinfo = new Int64();
                Int32 len = 6;
                SendARP(ldest, 0, ref macinfo, ref len);
                string TmpMac = Convert.ToString(macinfo, 16);//转换成16进制
                Mac = TmpMac.Substring(0, 2).ToUpper();
                for (int i = 2; i < TmpMac.Length; i = i   2)
                {
                    Mac = TmpMac.Substring(i, 2).ToUpper()   "-"   Mac;
                }
            }
            catch
            {
                MessageBox.Show("获取远程主机的MAC错误:请输入正确的IP!");
            }
            return Mac;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            for (int z = 0; z < ds.Tables[0].Rows.Count; z  )
            {
                if (DateTime.Now.ToString() == ds.Tables[0].Rows[z][1].ToString())
                {
                    string s = ds.Tables[0].Rows[z][0].ToString();
                    string[] sl = s.Split(Convert.ToChar("-"));
                    byte[] mac = new byte[6];
                    for (int i = 0; i < 6; i  )
                    {
                        mac[i] = ConvertHexToBytes(sl[i]);
                    }

                    // 发一个BroadCast包，包的内容包括以下数据就可以了。
                    // FF FF FF FF FF FF，6个FF是数据的开始，
                    // 紧跟着16次MAC地址就可以了。
                    UdpClient client = new UdpClient();
                    client.Connect(IPAddress.Broadcast, 30000);

                    byte[] packet = new byte[17 * 6];

                    for (int i = 0; i < 6; i  )
                        packet[i] = 0xFF;

                    for (int i = 1; i <= 16; i  )
                        for (int j = 0; j < 6; j  )
                            packet[i * 6   j] = mac[j];

                    int result = client.Send(packet, packet.Length);
                    if (DateTime.Now.ToString() == ds.Tables[0].Rows[ds.Tables[0].Rows.Count-1][1].ToString())
                    {
                        File.Delete(@"Telnet.xml");
                    }
                }
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            FillDataSet();
        }

        private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
        {

        }

        private void dateTimePicker2_ValueChanged(object sender, EventArgs e)
        {

        }
    }
}