在 c#下能禁止网络连接么 ？
如题~在c#里能用代码控制 断开网络连接么？或类似防火墙一样的功能监测连接状况 --------------------编程问答-------------------- 可以，利用wmi编程，相关知识可以百度一下！ --------------------编程问答-------------------- 掉用API接口 --------------------编程问答-------------------- 可以。禁用网卡，需要调用WINDOWS API --------------------编程问答-------------------- 禁用网卡，需要调用WINDOWS API --------------------编程问答-------------------- --------------------编程问答-------------------- --------------------编程问答-------------------- 调用Windows API接口即可。详细步骤参考Windows API Reference --------------------编程问答-------------------- 如果禁用网卡以后还能在系统设置里面打开么？ --------------------编程问答--------------------fuck! 广告 --------------------编程问答-------------------- 调用系统API --------------------编程问答--------------------
严重鄙视!!!!!!!!!!! --------------------编程问答--------------------
我也看不起你. --------------------编程问答-------------------- 可以 ！ 我今天没回帖！（10积分啊） --------------------编程问答-------------------- http://topic.csdn.net/t/20030620/08/1936850.html
参考！ --------------------编程问答-------------------- cmd，调用bat文件，里面禁止连接
cmd，调用ping命令，检测网络收发包，用来检测连接状态。
public static int PingHost(string[] hostclient, int timeOutVal)
{
const int ICMP_ECHO = 8;
const int PING_ERR = -1;
const int TIME_OUT = 200;
int retval = 0;
Socket sock = new Socket(AddressFamily.InterNetwork,
SocketType.Raw, ProtocolType.Icmp);
sock.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.SendTimeout, TIME_OUT);
sock.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReceiveTimeout, TIME_OUT);
IPHostEntry hostInfo = null;
try
{
IPAddress ipaddr = IPAddress.Parse(hostclient[0]);
hostInfo = Dns.GetHostByName(hostclient[0]);
}
catch(Exception)
{
retval = PING_ERR;
goto exit;
}
EndPoint hostPoint = (EndPoint) new
IPEndPoint(hostInfo.AddressList[0], 0);
IPHostEntry clientInfo = null;
try
{
if (hostclient.Length > 1)
clientInfo = Dns.GetHostByAddress(hostclient[1]);
else
clientInfo = Dns.GetHostByName(Dns.GetHostName());
}
catch (Exception)
{
retval = PING_ERR;
goto exit;
}
EndPoint clientPoint = (EndPoint) new
IPEndPoint(clientInfo.AddressList[0], 0);
int dataSize = 32;
int packetSize = dataSize + 8;
IcmpPacket packet = new IcmpPacket(ICMP_ECHO, 0, 0, 45,
UInt16_Seq++, dataSize);
Byte[] buffer = new Byte[packetSize];
int index = packet.ConverToByte(buffer);
if (index != packetSize)
{
retval = PING_ERR;
goto exit;
}
int count = (int)Math.Ceiling( (Double)index/2);
UInt16[] buffer2 = new UInt16[count];
index = 0;
for (int i=0; i<count; i++)
{
buffer2[i] = BitConverter.ToUInt16(buffer, index);
index += 2;
}
packet.CheckSum = IcmpPacket.SumofCheck(buffer2);
Byte[] sendData = new Byte[packetSize];
index = packet.ConverToByte(sendData);
if (index != packetSize)
{
retval = PING_ERR;
goto exit;
}
for (int i=0; i<5; i++)
{
int nBytes = 0;
int startTime = Environment.TickCount;
try
{
if ((nBytes = sock.SendTo(sendData, packetSize,
SocketFlags.None, (EndPoint)hostPoint)) == -1)
{
retval = PING_ERR;
goto exit;
}
// Console.WriteLine(nBytes.ToString());
}
catch(Exception ex)
{
Console.WriteLine("Send time out");
return -1;
}
Byte[] receiveData = new Byte[256];
nBytes = 0;
int timeout = 0;
int timeConsume = 0;
while (true)
{
try
{
nBytes = sock.ReceiveFrom(receiveData, 256,
SocketFlags.None, ref (EndPoint)clientPoint);
if (nBytes > 0)
{
if (packet._sequenceNumber ==
packet.GetSequenceNum(receiveData))
{
retval = 0;
goto exit;
}
}
}
catch(Exception ex)
{
Console.WriteLine(ex.ToString());
return -1;
}
if (nBytes == -1)
{
retval = PING_ERR;
goto exit;
}
else if (nBytes > 0)
{
timeConsume = System.Environment.TickCount -
startTime;
retval = timeConsume;
}
timeout = System.Environment.TickCount - startTime;
if (timeout > timeOutVal)
{
retval = PING_ERR;
goto exit;
}
}
}
exit: sock.Close();
return retval;
}
补充：.NET技术 , C#
