public Discover()
{
int size=0;
int r = GetNetworkParams(null, ref size);
if ((r != ERROR_SUCCESS) && (r != ERROR_BUFFER_OVERFLOW))
throw new Exception("Error invoking GetNetworkParams() : " + r);
Byte[] buffer= new Byte[size];
r = GetNetworkParams(buffer, ref size);
if (r != ERROR_SUCCESS)
throw new Exception("Error invoking GetNetworkParams() " + r);
FixedInfo PFixedInfo= new FixedInfo();
ByteArray_To_FixedInfo(ref PFixedInfo, buffer, Marshal.SizeOf(PFixedInfo));
this.hostname = PFixedInfo.HostName;
this.domainname = PFixedInfo.DomainName;
ArrayList ips = new ArrayList();
ips.Add(IPAddress.Parse(PFixedInfo.DnsServerList.IPAddressString));
IPAddrString ListItem = new IPAddrString();
IntPtr ListNext = new IntPtr();
ListNext = PFixedInfo.DnsServerList.NextPointer;
while (ListNext.ToInt32() != 0)
{
IntPtr_To_IPAddrString(ref ListItem, ListNext, Marshal.SizeOf(ListItem));
ips.Add(IPAddress.Parse(ListItem.IPAddressString));
ListNext = ListItem.NextPointer;
}
this.dnsServers = (IPAddress[]) ips.ToArray(typeof(IPAddress));
}
public static ArrayList GetDnsServers()
{
byte[] buffer = new byte[0];
int length = 0;
GetNetworkParams(buffer, ref length);//call to get the size needed
buffer = new byte[length];
GetNetworkParams(buffer, ref length);//now call for real
FixedInfo info = new FixedInfo(new MemoryStream(buffer));
ArrayList servers = new ArrayList();
foreach (IpAddrString entry in info.DnsServerList)
servers.Add(entry.IpAddress);
return servers;
}
public static ArrayList GetDnsServers()
{
byte[] buffer = new byte[0];
int length = 0;
GetNetworkParams(buffer, ref length); //call to get the size needed
buffer = new byte[length];
GetNetworkParams(buffer, ref length); //now call for real
FixedInfo info = new FixedInfo(new MemoryStream(buffer));
ArrayList servers = new ArrayList();
foreach (IpAddrString entry in info.DnsServerList)
{
servers.Add(entry.IpAddress);
}
return(servers);
}
private static extern void ByteArray_To_FixedInfo(ref FixedInfo dst, Byte[] src, int size);
