6月 05

网上直接扒了一段代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
namespace XXX
{ 
    public struct RASCONN
    {
        public int dwSize;
        public IntPtr hrasconn;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 257)]
        public string szEntryName;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 17)]
        public string szDeviceType;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 129)]
        public string szDeviceName;
    }
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct RasStats
    {
        public int dwSize;
        public int dwBytesXmited;
        public int dwBytesRcved;
        public int dwFramesXmited;
        public int dwFramesRcved;
        public int dwCrcErr;
        public int dwTimeoutErr;
        public int dwAlignmentErr;
        public int dwHardwareOverrunErr;
        public int dwFramingErr;
        public int dwBufferOverrunErr;
        public int dwCompressionRatioIn;
        public int dwCompressionRatioOut;
        public int dwBps;
        public int dwConnectionDuration;
    }
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct RasEntryName
    {
        public int dwSize;
        //[MarshalAs(UnmanagedType.ByValTStr,SizeConst=(int)RasFieldSizeConstants.RAS_MaxEntryName + 1)]
        public string szEntryName;
        //#if WINVER5
        //  public int dwFlags;
        //  [MarshalAs(UnmanagedType.ByValTStr,SizeConst=260+1)]
        //  public string szPhonebookPath;
        //#endif
    }
    public class RAS
    {
        [DllImport("Rasapi32.dll", EntryPoint = "RasEnumConnectionsA",
             SetLastError = true)]
        internal static extern int RasEnumConnections
            (
            ref RASCONN lprasconn, // buffer to receive connections data
            ref int lpcb, // size in bytes of buffer
            ref int lpcConnections // number of connections written to buffer
            );

        [DllImport("rasapi32.dll", CharSet = CharSet.Auto)]
        internal static extern uint RasGetConnectionStatistics(
            IntPtr hRasConn,       // handle to the connection
            [In, Out]RasStats lpStatistics  // buffer to receive statistics
            );
        [DllImport("rasapi32.dll", CharSet = CharSet.Auto)]
        public extern static uint RasHangUp(
            IntPtr hrasconn  // handle to the RAS connection to hang up
            );
        [DllImport("rasapi32.dll", CharSet = CharSet.Auto)]
        public extern static uint RasEnumEntries(
            string reserved,              // reserved, must be NULL
            string lpszPhonebook,         // pointer to full path and
            //  file name of phone-book file
            [In, Out]RasEntryName[] lprasentryname, // buffer to receive
            //  phone-book entries
            ref int lpcb,                  // size in bytes of buffer
            out int lpcEntries             // number of entries written
            //  to buffer
            );
        [DllImport("wininet.dll", CharSet = CharSet.Auto)]
        public extern static int InternetDial(
            IntPtr hwnd,
            [In]string lpszConnectoid,
            uint dwFlags,
            ref int lpdwConnection,
            uint dwReserved
            );
        public RAS()
        {
        }
    }
    public enum DEL_CACHE_TYPE //要删除的类型。
    {
        File,//表示internet临时文件
        Cookie //表示Cookie
    }
    public class RASDisplay
    {
        [DllImport("wininet.dll", CharSet = CharSet.Auto)]
        public static extern bool DeleteUrlCacheEntry(
            DEL_CACHE_TYPE type
            );
        private string m_duration;
        private string m_ConnectionName;
        private string[] m_ConnectionNames;
        private double m_TX;
        private double m_RX;
        private bool m_connected;
        private IntPtr m_ConnectedRasHandle;
        RasStats status = new RasStats();
        public RASDisplay()
        {
            m_connected = true;
            RAS lpras = new RAS();
            RASCONN lprasConn = new RASCONN();
            lprasConn.dwSize = Marshal.SizeOf(typeof(RASCONN));
            lprasConn.hrasconn = IntPtr.Zero;
            int lpcb = 0;
            int lpcConnections = 0;
            int nRet = 0;
            lpcb = Marshal.SizeOf(typeof(RASCONN));
            nRet = RAS.RasEnumConnections(ref lprasConn, ref lpcb, ref
            lpcConnections);
            if (nRet != 0)
            {
                m_connected = false;
                return;
            }
            if (lpcConnections > 0)
            {
                //for (int i = 0; i < lpcConnections; i++)
                //{
                RasStats stats = new RasStats();
                m_ConnectedRasHandle = lprasConn.hrasconn;
                RAS.RasGetConnectionStatistics(lprasConn.hrasconn, stats);

                m_ConnectionName = lprasConn.szEntryName;
                int Hours = 0;
                int Minutes = 0;
                int Seconds = 0;
                Hours = ((stats.dwConnectionDuration / 1000) / 3600);
                Minutes = ((stats.dwConnectionDuration / 1000) / 60) - (Hours * 60);
                Seconds = ((stats.dwConnectionDuration / 1000)) - (Minutes * 60) - (Hours * 3600);

                m_duration = Hours + " hours " + Minutes + " minutes " + Seconds + " secs";
                m_TX = stats.dwBytesXmited;
                m_RX = stats.dwBytesRcved;
                //}
            }
            else
            {
                m_connected = false;
            }

            int lpNames = 1;
            int entryNameSize = 0;
            int lpSize = 0;
            RasEntryName[] names = null;
            entryNameSize = Marshal.SizeOf(typeof(RasEntryName));
            lpSize = lpNames * entryNameSize;
            names = new RasEntryName[lpNames];
            names[0].dwSize = entryNameSize;
            uint retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames);
            //if we have more than one connection, we need to do it again
            if (lpNames > 1)
            {
                names = new RasEntryName[lpNames];
                for (int i = 0; i < names.Length; i++)
                {
                    names[i].dwSize = entryNameSize;
                }
                retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames);
            }
            m_ConnectionNames = new string[names.Length];

            if (lpNames > 0)
            {
                for (int i = 0; i < names.Length; i++)
                {
                    m_ConnectionNames[i] = names[i].szEntryName;
                }
            }
        }
        public string Duration
        {
            get
            {
                return m_connected ? m_duration : "";
            }
        }
        public string[] Connections
        {
            get
            {
                return m_ConnectionNames;
            }
        }
        public double BytesTransmitted
        {
            get
            {
                return m_connected ? m_TX : 0;
            }
        }
        public double BytesReceived
        {
            get
            {
                return m_connected ? m_RX : 0;
            }
        }
        public string ConnectionName
        {
            get
            {
                return m_connected ? m_ConnectionName : "";
            }
        }
        public bool IsConnected
        {
            get
            {
                return m_connected;
            }
        }
        public int Connect(string Connection)
        {
            int temp = 0;
            uint INTERNET_AUTO_DIAL_UNATTENDED = 2;
            int retVal = RAS.InternetDial(IntPtr.Zero, Connection, INTERNET_AUTO_DIAL_UNATTENDED, ref temp, 0);
            return retVal;
        }
        public void Disconnect()
        {
            RAS.RasHangUp(m_ConnectedRasHandle);
        }
    }

}

调用代码

        static void Main(string[] args)
        {
            for (int index = 0; index < 10; index++)
            {
                GetAddressIP();
                RASDisplay ras = new RASDisplay();
                Console.WriteLine("断开连接 start");
                ras.Disconnect();//断开连接
                Console.WriteLine("断开连接 end");
                Thread.Sleep(5000);
                Console.WriteLine("重新拨号 start");
                ras.Connect("ADSL");//重新拨号
                Console.WriteLine("重新拨号 end");

                Console.WriteLine("Sleep start");
                Thread.Sleep(5000);
                Console.WriteLine("Sleep start");
            }
            return;
        }

实际发现有点问题,找到了解决方法
1、右击“网上邻居”–属性;
2、选择“宽带连接”,右击“属性”- >“选项”;
3、把“提示名称、密码和证书等”前面的对号去掉,点“确定”退出;
4、生成模式务必改成x86

 

测试使用xp系统+.net4.0

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