window c# 拨号 网络相关的 api
很管用的拨号类网上找到的.
namespace ConsoleApplication1
{
/*
ADSL自动拨号类,前提是在系统中已经有了一个宽带拨号连接
调用代码:
RASDisplay ras = new RASDisplay();
ras.Disconnect();//断线
ras.Connect("adsl");//拨号
*/
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);
}
}
}