C# ADSL自动拨号，前提是在系统中已经有了一个宽带拨号连接

C# ADSL自动拨号调用代码:

 
 
 

  
  
  
RASDisplayras=newRASDisplay(); 
  
  
  
ras.Disconnect();//断线 
  
  
  
ras.Connect("adsl");//拨号 
  
  
  

  
  
  

  
  
  
usingSystem; 
  
  
  
usingSystem.Runtime.InteropServices; 
  
  
  
publicstructRASCONN 
  
  
  
{ 
  
  
  
publicintdwSize; 
  
  
  
publicIntPtrhrasconn; 
  
  
  
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=257)] 
  
  
  
publicstringszEntryName; 
  
  
  
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=17)] 
  
  
  
publicstringszDeviceType; 
  
  
  
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=129)] 
  
  
  
publicstringszDeviceName; 
  
  
  
} 
  
  
  

  
  
  
[StructLayout(LayoutKind.Sequential,CharSetCharSet=CharSet.Auto)] 
  
  
  
publicstructRasStats 
  
  
  
{ 
  
  
  
publicintdwSize; 
  
  
  
publicintdwBytesXmited; 
  
  
  
publicintdwBytesRcved; 
  
  
  
publicintdwFramesXmited; 
  
  
  
publicintdwFramesRcved; 
  
  
  
publicintdwCrcErr; 
  
  
  
publicintdwTimeoutErr; 
  
  
  
publicintdwAlignmentErr; 
  
  
  
publicintdwHardwareOverrunErr; 
  
  
  
publicintdwFramingErr; 
  
  
  
publicintdwBufferOverrunErr; 
  
  
  
publicintdwCompressionRatioIn; 
  
  
  
publicintdwCompressionRatioOut; 
  
  
  
publicintdwBps; 
  
  
  
publicintdwConnectionDuration; 
  
  
  
} 
  
  
  
[StructLayout(LayoutKind.Sequential,CharSetCharSet=CharSet.Auto)] 
  
  
  
publicstructRasEntryName 
  
  
  
{ 
  
  
  
publicintdwSize; 
  
  
  
//[MarshalAs(UnmanagedType.ByValTStr,SizeConst=(int)RasFieldSizeConstants. 
  
  
  
RAS_MaxEntryName+1)] 
  
  
  
publicstringszEntryName; 
  
  
  
//#ifWINVER5 
  
  
  
//publicintdwFlags; 
  
  
  
//[MarshalAs(UnmanagedType.ByValTStr,SizeConst=260+1)] 
  
  
  
//publicstringszPhonebookPath; 
  
  
  
//#endif 
  
  
  
} 
  
  
  
publicclassRAS 
  
  
  
{ 
  
  
  
[DllImport("Ra<ahrefahref="http://dev.21tx.com/corp/sap/"target="_blank">SAP a>i32.dll", 
  
  
  
EntryPoint="RasEnumConnectionsA", 
  
  
  
SetLastError=true)] 
  
  
  

  
  
  
internalstaticexternintRasEnumConnections 
  
  
  
( 
  
  
  
refRASCONNlprasconn,//buffertoreceiveconnectionsdata 
  
  
  
refintlpcb,//sizeinbytesofbuffer 
  
  
  
refintlpcConnections//numberofconnectionswrittentobuffer 
  
  
  
); 
  
  
  

  
  
  

  
  
  
[DllImport("rasapi32.dll",CharSetCharSet=CharSet.Auto)] 
  
  
  
internalstaticexternuintRasGetConnectionStatistics( 
  
  
  
IntPtrhRasConn,//handletotheconnection 
  
  
  
[In,Out]RasStatslpStatistics//buffertoreceivestatistics 
  
  
  
); 
  
  
  
[DllImport("rasapi32.dll",CharSetCharSet=CharSet.Auto)] 
  
  
  
publicexternstaticuintRasHangUp( 
  
  
  
IntPtrhrasconn//handletotheRASconnectiontohangup 
  
  
  
); 
  
  
  

  
  
  
[DllImport("rasapi32.dll",CharSetCharSet=CharSet.Auto)] 
  
  
  
publicexternstaticuintRasEnumEntries( 
  
  
  
stringreserved,//reserved,mustbeNULL 
  
  
  
stringlpszPhonebook,//pointertofullpathand 
  
  
  
//filenameofphone-bookfile 
  
  
  
[In,Out]RasEntryName[]lprasentryname,//buffertoreceive 
  
  
  
//phone-bookentries 
  
  
  
refintlpcb,//sizeinbytesofbuffer 
  
  
  
outintlpcEntries//numberofentrieswritten 
  
  
  
//tobuffer 
  
  
  
); 
  
  
  

  
  
  
[DllImport("wininet.dll",CharSetCharSet=CharSet.Auto)] 
  
  
  
publicexternstaticintInternetDial( 
  
  
  
IntPtrhwnd, 
  
  
  
[In]stringlpszConnectoid, 
  
  
  
uintdwFlags, 
  
  
  
refintlpdwConnection, 
  
  
  
uintdwReserved 
  
  
  
); 
  
  
  

  
  
  
publicRAS() 
  
  
  
{ 
  
  
  
} 
  
  
  
} 
  
  
  
publicenumDEL_CACHE_TYPE//要删除的类型。 
  
  
  
{ 
  
  
  
File,//表示internet临时文件 
  
  
  
Cookie//表示Cookie 
  
  
  
}; 
  
  
  
publicclassRASDisplay 
  
  
  
{ 
  
  
  
[DllImport("wininet.dll",CharSetCharSet=CharSet.Auto)] 
  
  
  
publicstaticexternboolDeleteUrlCacheEntry( 
  
  
  
DEL_CACHE_TYPEtype 
  
  
  
); 
  
  
  
privatestringm_duration; 
  
  
  
privatestringm_ConnectionName; 
  
  
  
privatestring[]m_ConnectionNames; 
  
  
  
privatedoublem_TX; 
  
  
  
privatedoublem_RX; 
  
  
  
privateboolm_connected; 
  
  
  
privateIntPtrm_ConnectedRasHandle; 
  
  
  

  
  
  
RasStatsstatus=newRasStats(); 
  
  
  
publicRASDisplay() 
  
  
  
{ 
  
  
  
m_connected=true; 
  
  
  

  
  
  
RASlpras=newRAS(); 
  
  
  
RASCONNlprasConn=newRASCONN(); 
  
  
  

  
  
  
lprasConn.dwSize=Marshal.SizeOf(typeof(RASCONN)); 
  
  
  
lprasConn.hrasconn=IntPtr.Zero; 
  
  
  

  
  
  
intlpcb=0; 
  
  
  
intlpcConnections=0; 
  
  
  
intnRet=0; 
  
  
  
lpcb=Marshal.SizeOf(typeof(RASCONN)); 
  
  
  

  
  
  

  
  
  
nRet=RAS.RasEnumConnections(reflprasConn,reflpcb,ref 
  
  
  
lpcConnections); 
  
  
  
if(nRet!=0) 
  
  
  
{ 
  
  
  
m_connected=false; 
  
  
  
return; 
  
  
  
} 
  
  
  
if(lpcConnections>0) 
  
  
  
{ 
  
  
  
//for(inti=0;i;i++) 

  
  
  
//{ 
  
  
  
RasStatsstats=newRasStats(); 
  
  
  
m_ConnectedRasHandle=lprasConn.hrasconn; 
  
  
  
RAS.RasGetConnectionStatistics(lprasConn.hrasconn,stats); 
  
  
  
m_ConnectionName=lprasConn.szEntryName; 
  
  
  
intHours=0; 
  
  
  
intMinutes=0; 
  
  
  
intSeconds=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; 
  
  
  
} 
  
  
  
intlpNames=1; 
  
  
  
intentryNameSize=0; 
  
  
  
intlpSize=0; 
  
  
  
RasEntryName[]names=null; 
  
  
  
entryNameSize=Marshal.SizeOf(typeof(RasEntryName)); 
  
  
  
lpSize=lpNames*entryNameSize; 
  
  
  
names=newRasEntryName[lpNames]; 
  
  
  
names[0].dwSize=entryNameSize; 
  
  
  
uintretval=RAS.RasEnumEntries(null,null,names,reflpSize,outlpNames); 
  
  
  
//ifwehavemorethanoneconnection,weneedtodoitagain 
  
  
  
if(lpNames>1) 
  
  
  
{ 
  
  
  
names=newRasEntryName[lpNames]; 
  
  
  
for(inti=0;i;i++) 

  
  
  
{ 
  
  
  
names[i].dwSize=entryNameSize; 
  
  
  
} 
  
  
  
retval=RAS.RasEnumEntries(null,null,names,reflpSize,outlpNames); 
  
  
  
} 
  
  
  
m_ConnectionNames=newstring[names.Length]; 
  
  
  
if(lpNames>0) 
  
  
  
{ 
  
  
  
for(inti=0;i;i++) 

  
  
  
{ 
  
  
  
m_ConnectionNames[i]=names[i].szEntryName; 
  
  
  
} 
  
  
  
} 
  
  
  
} 
  
  
  
publicstringDuration 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_connected?m_duration:""; 
  
  
  
} 
  
  
  
} 
  
  
  

  
  
  
publicstring[]Connections 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_ConnectionNames; 
  
  
  
} 
  
  
  
} 
  
  
  

  
  
  
publicdoubleBytesTransmitted 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_connected?m_TX:0; 
  
  
  
} 
  
  
  
} 
  
  
  
publicdoubleBytesReceived 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_connected?m_RX:0; 
  
  
  
} 
  
  
  
} 
  
  
  
publicstringConnectionName 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_connected?m_ConnectionName:""; 
  
  
  
} 
  
  
  
} 
  
  
  
publicboolIsConnected 
  
  
  
{ 
  
  
  
get 
  
  
  
{ 
  
  
  
returnm_connected; 
  
  
  
} 
  
  
  
} 
  
  
  
publicintConnect(stringConnection) 
  
  
  
{ 
  
  
  
inttemp=0; 
  
  
  
uintINTERNET_AUTO_DIAL_UNATTENDED=2; 
  
  
  
intretVal=RAS.InternetDial(IntPtr.Zero,Connection,INTERNET_AUTO_DIAL_UNATTENDED, 
  
  
  
reftemp,0); 
  
  
  
returnretVal; 
  
  
  
} 
  
  
  
publicvoidDisconnect() 
  
  
  
{ 
  
  
  
RAS.RasHangUp(m_ConnectedRasHandle); 
  
  
  
} 
  
  
  
}
 
 
 

以上介绍C# ADSL自动拨号。