我先把这个类发出来
太长我一楼二楼发我现在应用到项目需要反复的断号连接换IP
也就是要反复的 RasHelper.Disconnect();
int dialResultNumber = RasHelper.Connect("ADSL");问题是程序第一次启动这段代码有效第二次RasHelper.Disconnect();根本就不起作用 反复RasHelper.Disconnect();都没有用100分求助 跪谢！！！！！！！！
太长我一楼二楼发我现在应用到项目需要反复的断号连接换IP
也就是要反复的 RasHelper.Disconnect();
int dialResultNumber = RasHelper.Connect("ADSL");问题是程序第一次启动这段代码有效第二次RasHelper.Disconnect();根本就不起作用 反复RasHelper.Disconnect();都没有用100分求助 跪谢！！！！！！！！
using System.Runtime.InteropServices;namespace RasHelperNameSpace
{
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()
{ }
//一楼完
}
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 RasHelper
{
[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 RasHelper()
{
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);
}
}
}
而且古怪的问题也多郁闷。。
如果是每次都这样，建议LZ用VC做好后封装成DLL然后调用？
RasHelper.Disconnect();
int dialResultNumber = RasHelper.Connect("ADSL"); 呢?
应该RasHelperNameSpace.RAS.RasHelper r;连接用
r = new RasHelperNameSpace.RAS.RasHelper();
int dialResultNumber = r.Connect("ADSL");关闭用
r = new RasHelperNameSpace.RAS.RasHelper();
r.Disconnect();每次都重新new一下就行了,上程序调试通过.