We have a windows server with 20 ip's bound to the nic. At the moment we are successfully performing (web)requests by (automaticaly) changing the IP's once in a while (request.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(connectionInfo.BindIPEndPointCallback);). Since a couple of days we have decided to use a test environment where we use the WebBrowser control of .NET to make the web request.
Here the problem starts, because we cant't give an endpoint like solution to change the ip the webcontrol is using. This is why we've decided to change the IP programmaticaly but whenever we change the IP via WMI, we are getting identified with a single ip adress (all the time).
This is the wmi code:
public static void setIP(string IpAddresses, string SubnetMask, string Gateway)
{
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"]==true)
{
ManagementBaseObject newIP = mo.GetMethodParameters("EnableStatic");
ManagementBaseObject newGate = mo.GetMethodParameters("SetGateways");
ManagementBaseObject newDNS = mo.GetMethodParameters("SetDNSServerSearchOrder");
newGate["DefaultIPGateway"] = new string[] { Gateway };
newGate["GatewayCostMetric"] = new int[] { 1 };
newIP["IPAddress"] = IpAddresses.Split(',');
newIP["SubnetMask"] = new string[] { SubnetMask };
ManagementBaseObject setIP = mo.InvokeMethod("EnableStatic", newIP, null);
ManagementBaseObject setGateways = mo.InvokeMethod("SetGateways", newGate, null);
}
}
}
The server runs on VM Ware but I dont think this can be the problem.
What are we doing wrong?
Not really sure, but you pass multiple ip addresses to EnableStatic, but only a single subnet mask, which might cause the problem.
Try to pass a subnet mask for every ip address, i.e. change the assignment of newIP["SubnetMask"] to:
newIP["SubnetMask"] = Enumerable.Repeat(SubnetMask, newIP["IPAddress"].Length).ToArray();
And make sure you do not have any spaces in the IpAddresses argument
Related
We are working on a programm to configure some NICs.
We have to change IP Adresses, Subnetmask and the MTU.
Everything went well except the MTU Statement:
public void SetMTU()
{
ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();
foreach (ManagementObject objMO in objMOC)
{
if (networkadapterID == (String)objMO["SettingID"])
{
ManagementBaseObject setMTU;
ManagementBaseObject newMTU = objMO.GetMethodParameters("SetMTU");
Int32 test = 9216;
newMTU["MTU"] = test;
setMTU = objMO.InvokeMethod("SetMTU", newMTU, null);
}
}
}
The correct NIC ID is given. Other WMI Operations succeed but we stuck on that one with error Message:
System.Management.ManagementException: "Die Methode ist ungültig. "
(System.Management.ManagementException: "The Method is invalid.")
We have also tried to use "test" as string or uint32 (because the microsoft docs says it's an uint32),also:
newMTU["MTU"] = new (u)int[] { MTU };
but it doesnt work either.
Meanwhile we don't have any ideas how to fix the problem.
I am grateful for every idea.
Thanks for your help and have a good day,
Alex
Edit:
Code to read the MTU should be (you have to tell this part a NetworkID so you don't read the Value of every NIC, you find this in your registry, but you should be able to delete the if part):
ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();
foreach (ManagementObject objMO in objMOC)
{
if (networkadapterID == (String)objMO["SettingID"])
{
MessageBox.Show(Convert.ToString(objMO["MTU"]) + ": " + Convert.ToString(objMO["SettingID"]));
}
}
So far we didn't get the problem solved but we now check if the OS is Windows 10 and we will start a PowerShell task with this command:
Get-NetAdapterAdvancedProperty -Name 'NICName' -DisplayName 'Jumbo-Rahmen' | Set-NetAdapterAdvancedProperty -RegistryValue 'MTUsize';
Jumbo-Rahmen should be JumboPacket on an English OS
If the OS is not Windows 10 the User will be asked to change the MTU manually
Given the following function:
private void UpdateNetworkAdapterName(string pnpDevID, string oldAdpterName, string newAdapterName)
{
string guid = "";
ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_NetworkAdapter");
ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
ManagementObjectCollection queryCollection = searcher.Get();
foreach (ManagementObject m in queryCollection)
{
if (string.Equals(m["PNPDeviceID"].ToString(), pnpDevID))
{
guid = m["GUID"].ToString();
break;
}
}
RegistryKey regKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, Environment.MachineName, RegistryView.Registry64);
regKey = regKey.OpenSubKey("SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}\\" + guid + "\\Connection", true);
regKey.SetValue("Name", newAdapterName);
bool successful = false;
foreach (NetworkInterface netAd in NetworkInterface.GetAllNetworkInterfaces())
{
if (netAd.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
{
if (string.Equals(netAd.Name, newAdapterName))
{
Console.WriteLine($"Successfully updated network adapter from {oldAdpterName} to {newAdapterName}");
successful = true;
break;
}
}
}
if (!successful)
{
Console.WriteLine($"Failed to updated network adapter from {oldAdpterName} to {newAdapterName}");
}
}
This successfully updated the correct adapter 'Name' data within Windows Registry and the correct adapter name in the Network and Sharing Centre.
However, I get the failed message internally from the code (no exceptions thrown though (have removed exception handling code for readability)) and doing an ipconfig shows that the adpater name has not been updated.
Environment is Windows10 (needs to also work on Windows7), both 64bit architectures, application built as a 32bit application.
Any ideas what is going on? I am at a total loss at this point.
Thanks in advance.
Just realised that I have all the information to just do a netsh command:
netsh interface set interface name="" newname=""
In C# I wish to get my own DHCP or Static IP address.
I use this code:
string host = Dns.GetHostName();
IPHostEntry ip = Dns.GetHostEntry(host);
Console.WriteLine(ip.AddressList[0].ToString());
and I get these results:
How do I know which one to use? I have virtual PCs installed on this PC as well.
You can use WMI to access network interface properties and find out is DHCP is enabled:
ManagementObjectSearcher searcherNetwork = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_NetworkAdapterConfiguration");
foreach (ManagementObject queryObj in searcherNetwork.Get())
{
foreach (var prop in queryObj.Properties)
{
Console.WriteLine(string.Format("Name: {0} Value: {1}", prop.Name, prop.Value));
}
}
Or you can use NetworkInterface.GetAllNetworkInterfaces() to get more info such as the Name and NetworkInterfaceType (Ethernet, Wireless80211 etc) and filter by those properties
You can also access IPv4InterfaceProperties.IsDhcpEnabled property such as:
foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
{
Console.WriteLine(ni.GetIPProperties().GetIPv4Properties().IsDhcpEnabled);
}
I have found the answer here:
Get IP Address using C#
This is the code (in case of a broken link. I just did not want to pass this code off as mine you see)
string hostName = Dns.GetHostName(); // Retrive the Name of HOST
Console.WriteLine(hostName);
// Get the IP
string myIP = Dns.GetHostByName(hostName).AddressList[0].ToString();
Console.WriteLine("My IP Address is :"+myIP);
I'm coding an application that has to get the network adapters configuration on a Windows 7 machine just like it's done in the Windows network adapters configuration panel:
So far I can get pretty much all the information I need from NetworkInterface.GetAllNetworkInterfaces() EXCEPT the subnet prefix length.
I'm aware that it can be retrieved from the C++ struc PMIB_UNICASTIPADDRESS_TABLE via OnLinkPrefixLength but I'm trying to stay in .net.
I also took a look at the Win32_NetworkAdapterConfiguration WMI class but it only seems to return the IP v4 subnet mask.
I also know that some information (not the prefix length, as far as I know) are in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters\Interfaces\{CLSID}
I also used SysInternals ProcessMon to try to get anything usefull when saving the network adapter settings but found nothing...
So, is there any clean .NET way to get this value? (getting it from the registry wouldn't be a problem)
EDIT: Gateways
This doesn't concern the actual question, but for those who need to retrieve the entire network adapter IPv6 configuration, the IPInterfaceProperties.GatewayAdresses property only supports the IPv4 gateways. As mentionned in the answer comments below, the only way to get the entire info until .NET framework 4.5 is to call WMI.
You can do so using Win32_NetworkAdapterConfiguration. You might have overlooked it.
IPSubnet will return an array of strings. Use the second value.
I didn't have time to whip up some C# code, but I'm sure you can handle it. Using WBEMTEST, I pulled this:
instance of Win32_NetworkAdapterConfiguration
{
Caption = "[00000010] Intel(R) 82579V Gigabit Network Connection";
DatabasePath = "%SystemRoot%\\System32\\drivers\\etc";
DefaultIPGateway = {"192.168.1.1"};
Description = "Intel(R) 82579V Gigabit Network Connection";
DHCPEnabled = TRUE;
DHCPLeaseExpires = "20120808052416.000000-240";
DHCPLeaseObtained = "20120807052416.000000-240";
DHCPServer = "192.168.1.1";
DNSDomainSuffixSearchOrder = {"*REDACTED*"};
DNSEnabledForWINSResolution = FALSE;
DNSHostName = "*REDACTED*";
DNSServerSearchOrder = {"192.168.1.1"};
DomainDNSRegistrationEnabled = FALSE;
FullDNSRegistrationEnabled = TRUE;
GatewayCostMetric = {0};
Index = 10;
InterfaceIndex = 12;
IPAddress = {"192.168.1.100", "fe80::d53e:b369:629a:7f95"};
IPConnectionMetric = 10;
IPEnabled = TRUE;
IPFilterSecurityEnabled = FALSE;
IPSecPermitIPProtocols = {};
IPSecPermitTCPPorts = {};
IPSecPermitUDPPorts = {};
IPSubnet = {"255.255.255.0", "64"};
MACAddress = "*REDACTED*";
ServiceName = "e1iexpress";
SettingID = "{B102679F-36AD-4D80-9D3B-D18C7B8FBF24}";
TcpipNetbiosOptions = 0;
WINSEnableLMHostsLookup = TRUE;
WINSScopeID = "";
};
IPSubnet[1] = IPv6 subnet;
Edit: Here's some code.
StringBuilder sBuilder = new StringBuilder();
ManagementObjectCollection objects = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration").Get();
foreach (ManagementObject mObject in objects)
{
string description = (string)mObject["Description"];
string[] addresses = (string[])mObject["IPAddress"];
string[] subnets = (string[])mObject["IPSubnet"];
if (addresses == null && subnets == null)
continue;
sBuilder.AppendLine(description);
sBuilder.AppendLine(string.Empty.PadRight(description.Length,'-'));
if (addresses != null)
{
sBuilder.Append("IPv4 Address: ");
sBuilder.AppendLine(addresses[0]);
if (addresses.Length > 1)
{
sBuilder.Append("IPv6 Address: ");
sBuilder.AppendLine(addresses[1]);
}
}
if (subnets != null)
{
sBuilder.Append("IPv4 Subnet: ");
sBuilder.AppendLine(subnets[0]);
if (subnets.Length > 1)
{
sBuilder.Append("IPv6 Subnet: ");
sBuilder.AppendLine(subnets[1]);
}
}
sBuilder.AppendLine();
sBuilder.AppendLine();
}
string output = sBuilder.ToString().Trim();
MessageBox.Show(output);
and some output:
Intel(R) 82579V Gigabit Network Connection
------------------------------------------
IPv4 Address: 192.168.1.100
IPv6 Address: fe80::d53e:b369:629a:7f95
IPv4 Subnet: 255.255.255.0
IPv6 Subnet: 64
Edit: I'm just going to clarify in case somebody searches for this later. The second item isn't always the IPv6 value. IPv4 can have multiple addresses and subnets. Use Integer.TryParse on the IPSubnet array value to make sure it's an IPv6 subnet and/or use the last item.
Parse the input stream of netsh with arguments:
interface ipv6 show route
Hope this helps!
How can one get the default IP address excluding the 127.0.0.1 loopback address when mutliple IP addresses are assigned to PC i.e if the PC is multihomed.
Following code returns correct default IP address on one PC but returns incorrect IP address on another PC, so there must be some other solution.
private string[] GetDefaultIPWithSubnet()
{
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
string[] ipSubnet = new string[2];
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"])
{
try
{
string[] ips = (string[])mo["IPAddress"];
string[] subnets = (string[])mo["IPSubnet"];
ipSubnet[0] = ips[0].ToString();
ipSubnet[1] = subnets[0].ToString();
break;
}
catch (Exception ex)
{
return null;
}
}
}
return ipSubnet;
}
public static void GetDefaultIp()
{
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface adapter in adapters)
{
if (adapter.OperationalStatus == OperationalStatus.Up && adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
{
IPInterfaceProperties properties = adapter.GetIPProperties();
foreach (var x in properties.UnicastAddresses)
{
if (x.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
Console.WriteLine(" IPAddress ........ : {0:x}", x.Address.ToString());
}
}
}
}
I think you mean the interface with the default route. You can get the IPv4 route table with the GetIpForwardTable function (quick google reveals that it is callable through p/invoke) and look for a 0.0.0.0 destination route (run route print at command line to check what a route table looks like).
I think you misunderstood the meaning of IPEnabled, as far as I know that parameter is TRUE if TCP/IP is enabled on the interface. So I don't think this is what you're looking for.