C#控制ADSL等拨号连接

作者: Nishizhen 分类: C#相关 发布时间: 2010-03-24 10:06 ė 6没有评论

调用代码:

 RASDisplay ras = new RASDisplay();
            ras.Disconnect();//断线          
ras.Connect("宽带连接");//拨号,adsl是宽带连接的名称 

控制类

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace ADSL
{
    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);
        }
    }

}

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