// Gets the initial settings for the NICs so we can set them back
// on shutdown
public static void SaveCurNICSettings()
{
// Should be null if never run. Should only be run once.
if (m_NICPersisteSettings == null)
{
m_NICPersisteSettings = new List <NICObject>();
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
NICObject CurNIC = new NICObject(NIC, IsObtainDNSAuto(NIC.Id));
m_NICPersisteSettings.Add(CurNIC);
}
}
}
// Gets the initial settings for the NICs so we can set them back
// on shutdown
public static void SaveCurNICSettings()
{
// Should be null if never run. Should only be run once.
if (m_NICPersisteSettings == null)
{
m_NICPersisteSettings = new List<NICObject>();
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
NICObject CurNIC = new NICObject(NIC, IsObtainDNSAuto(NIC.Id));
m_NICPersisteSettings.Add(CurNIC);
}
}
}
static void SetDNSDefault(NetworkInterface NIC)
{
// Get the state this guy was originally in
NICObject UseNIC = null;
foreach (NICObject OrigNIC in m_NICPersisteSettings)
{
if (OrigNIC.m_NIC.Id == NIC.Id)
{
UseNIC = OrigNIC;
}
}
// Gets the adapter config and search to find DNS settings portion
try
{
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
// Only look for this NIC (by ID)
string sCurID = (string)mo["SettingID"];
if ((sCurID == UseNIC.m_NIC.Id))
{
// Get the DNS search order property
ManagementBaseObject objdns = mo.GetMethodParameters("SetDNSServerSearchOrder");
if (objdns != null)
{
// If we found the NIC in our saved ones above (should have)
// then use its original settings
if (UseNIC != null)
{
// SET TO ORIGINAL SETTINGS
// The original settings could have been "obtain DNS server automatically"
if (UseNIC.m_bIsObtainAuto)
{
// SET TO "obtain DNS server automatically"
// Call this guy with no "in" params sets it to default
object oRet = mo.InvokeMethod("SetDNSServerSearchOrder", null);
}
else
{
// SET TO HARD ADDRESS
IPAddressCollection IPColl = UseNIC.m_NIC.GetIPProperties().DnsAddresses;
string[] sDNSSearchList = new string[IPColl.Count];
int i = 0;
foreach (IPAddress CurIP in IPColl)
{
sDNSSearchList[i++] = CurIP.ToString();
}
objdns["DNSServerSearchOrder"] = sDNSSearchList;
mo.InvokeMethod("SetDNSServerSearchOrder", objdns, null);
}
}
else
{
// SET TO "obtain DNS server automatically"
// Call this guy with no "in" params sets it to default
object oRet = mo.InvokeMethod("SetDNSServerSearchOrder", null);
}
}
}
}
}
catch (ManagementException e)
{
string sStack = e.ToString();
}
}