实现ADSL自动拨号代码,CSharp代码库,德仔网

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【CSharp】实现ADSL自动拨号
作者:jason / 发布于2014/6/13/ 686

	代码
	using System;
	using System.Runtime.InteropServices;
	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);
	 }
	}

	

	调用方法:
	RASDisplay ras = new RASDisplay();
	ras.Disconnect();//断开连接
	ras.Connect("ADSL");//重新拨号
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　ADSL　　自动拨号　
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