I am building a C# application and I want to fetch the MAC ID of the system. I have found many code snippets, but they either give wrong answers or throw exceptions. I am not sure which code snippet is giving the right answer. Can someone provide me the exact code snippet that fetches the MAC ID?
This will help you.
public string FetchMacId()
{
string macAddresses = "";
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
if (nic.OperationalStatus == OperationalStatus.Up)
{
macAddresses += nic.GetPhysicalAddress().ToString();
break;
}
}
return macAddresses;
}
System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
and iterate through each interface, getting the MAC address for each one.
Another way would be to use management object:
ManagementScope theScope = new ManagementScope("\\\\computerName\\root\\cimv2");
StringBuilder theQueryBuilder = new StringBuilder();
theQueryBuilder.Append("SELECT MACAddress FROM Win32_NetworkAdapter");
ObjectQuery theQuery = new ObjectQuery(theQueryBuilder.ToString());
ManagementObjectSearcher theSearcher = new ManagementObjectSearcher(theScope, theQuery);
ManagementObjectCollection theCollectionOfResults = theSearcher.Get();
foreach (ManagementObject theCurrentObject in theCollectionOfResults)
{
string macAdd = "MAC Address: " + theCurrentObject["MACAddress"].ToString();
MessageBox.Show(macAdd);
}
Related
Got this program i am writing in my office in C#.
So i can read all Computer Names From the Domain, fill them into a List and print them out.
Using this Code :
`private void FindComputersInAD()
{
List<string> computerNames = new List<string>();
DirectoryContext dirCtx = new DirectoryContext(DirectoryContextType.Domain, "domain.com");
using (Domain usersDomain = Domain.GetDomain(dirCtx))
using (DirectorySearcher adsearcher = new DirectorySearcher(usersDomain.GetDirectoryEntry()))
{
adsearcher.Filter = ("(objectCategory=computer)");
adsearcher.SizeLimit = 0;
adsearcher.PageSize = 250;
// Let searcher know which properties are going to be used, and only load those
adsearcher.PropertiesToLoad.Add("name");
foreach (SearchResult searchResult in adsearcher.FindAll())
{
if (searchResult.Properties["name"].Count > 0)
{
string computer = (string)searchResult.Properties["name"][0];
computerNames.Add(computer);
}
}
}
computerNames.Sort();
computerNames.ForEach(Console.WriteLine);
}`
Now that i got all the Computer Names, i would like to get their IP Addresses as well.
But there is no such property.
I googled a lot and tried a few things but nothing works.
Can I use the DNS class to do this ?
I use this method to get the Host IP Address :
private void GetLocalIPAddress()
{
string _subString;
var _host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var _ip in _host.AddressList)
{
if (_ip.AddressFamily == AddressFamily.InterNetwork)
{
_subString = _ip.ToString().Substring(_ip.ToString().Length - 2);
//When a IP Address ends with .1, don't add it to the List.
if (_subString != ".1")
{
_hostIPAddress = _ip.ToString();
}
}
}
}
Can I use this also somehow to get the IP Addresses of the Computers ?
I would be very happy if you can help me :)
Thanks in advance
So i found myself an answer.
Since all the computers are in the same domain i openend cmd and tried nslookup.
And it returned the IP Address i wanted.
So i just built a C# DNSLookup Method, looks like this :
private void DNSLookup(string computerNameOrAddress)
{
IPHostEntry hostEntry = Dns.GetHostEntry(computerNameOrAddress);
IPAddress[] ips = hostEntry.AddressList;
foreach (IPAddress ip in ips)
{
Console.WriteLine(" Address: {0}", ip);
}
}
Anyway thanks for looking :)
I'm building a C# application to monitor server and workstation workloads with WMI and WQL queries. I'm using WMI because it seems to be faster in comparison to powershell queries. My hardship starts when I try to retrieve logged on users on a remote machine. I figured I need to use the Win32_LoggedOnUser class. I have tried the following queries:
#"SELECT * FROM Win32_LoggedOnUser"
#"SELECT Antecedent FROM Win32_LoggedOnUser"
What I'm used to is to retrieve the desired value like this:
var cims = connection.getCimInstances(this, queryUser);
if (cims != null)
{
foreach (CimInstance cim in cims)
{
Komponenten.User user = new Komponenten.User();
user.Name = Convert.ToString(cim.CimInstanceProperties["Name"].Value);
users.Add(user);
}
}
where queryUser is one of the strings from above.
In both cases, I get a Win32_Account object in return, which seems to suggest - and the debugger seems to confirm - that I should use CimInstanceProperties["Name"].Value on the returned Win32_Account class again. But that's not working at all. Any ideas on how to get access to the CimInstanceProperties of a Win32_Account stored in a CimInstanceProperity ? I can't find anything on the respective Windows reference page (https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-loggedonuser) nor during my extensive google-search.
Thanks!
I ended up using the ManagementObject-Class and Regex to find the usernames after converting the Antecedent - Object to a string:
var users = new List<Komponenten.User>();
var searcher = this.connection.makeQuery(this, "SELECT * FROM Win32_LoggedOnUser");
if (searcher != null)
{
foreach (ManagementObject queryObj in searcher.Get())
{
Komponenten.User user = new Komponenten.User();
var win32_account = queryObj["Antecedent"].ToString();
string stripped = Regex.Replace(win32_account, "[^a-zA-Z=]+", "", RegexOptions.Compiled);
int end = stripped.LastIndexOf("=");
user.Name = stripped.Substring(end+1);
users.Add(user);
}
this.users = users;
An alternative which takes the LogonSession into account is:
var users = new List<Komponenten.User>();
var searcher = this.connection.makeQuery(this, "SELECT LogonId FROM Win32_LogonSession Where LogonType=2");
var Scope = this.connection.getScope(this, this.connection.getConnection());
if (searcher != null)
{
foreach (ManagementObject queryObj in searcher.Get())
{
ObjectQuery LQuery = new ObjectQuery("Associators of {Win32_LogonSession.LogonId=" + queryObj["LogonId"] + "} Where AssocClass=Win32_LoggedOnUser Role=Dependent");
ManagementObjectSearcher LSearcher = new ManagementObjectSearcher(Scope, LQuery);
foreach (ManagementObject LWmiObject in LSearcher.Get())
{
Komponenten.User user = new Komponenten.User();
user.Name = Convert.ToString(LWmiObject["Name"]);
users.Add(user);
}
}
this.users = users;
}
where this.connection.getConnection is a ConnectionsOption object depending on your respective domain and account data
Trying to run the following (found here http://www.encodedna.com/2013/04/show-printers-using-wmi.htm ) to get a list of network printers but it only returns printers added to my machine
System.Management.ManagementScope objMS = new System.Management.ManagementScope(ManagementPath.DefaultPath);
objMS.Connect();
SelectQuery objQuery = new SelectQuery("SELECT * FROM Win32_Printer");
ManagementObjectSearcher objMOS = new ManagementObjectSearcher(objMS, objQuery);
System.Management.ManagementObjectCollection objMOC = objMOS.Get();
foreach (ManagementObject Printers in objMOC)
{
if (Convert.ToBoolean(Printers["Local"])) // LOCAL PRINTERS.
{
Console.WriteLine("Local :- " + Printers["Name"]);
}
if (Convert.ToBoolean(Printers["Network"])) // ALL NETWORK PRINTERS.
{
Console.WriteLine("Network :- " + Printers["Name"]);
}
}
I can view/add network printers in control panel. Just curious why it isn't showing them. Any thoughts?
Thanks!
Try:
foreach (string printerString in PrinterSettings.InstalledPrinters)
{
// do something
}
I develop an activation for a system. to generate request code, I used HDD ID, Bios ID and Processor ID. I used following code to get hard disk ID.
private string getHardDiskID()
{
string hddID = null;
ManagementClass mc = new ManagementClass("Win32_LogicalDisk");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject strt in moc)
{
hddID += Convert.ToString(strt["VolumeSerialNumber"]);
}
return hddID.Trim().ToString();
}
But if I plug a removable disk, That ID value is changed. How to get the UNIQUE Serial Number of the hard drive...?
Thanks in advance..
You can try from this source:
As said in the source, a better solution is to get the Hard Drive Serial Number given by the Manufacturer. This value won't change even if you format your Hard Drive.
searcher = new
ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
int i = 0;
foreach(ManagementObject wmi_HD in searcher.Get())
{
// get the hard drive from collection
// using index
HardDrive hd = (HardDrive)hdCollection[i];
// get the hardware serial no.
if (wmi_HD["SerialNumber"] == null)
hd.SerialNo = "None";
else
hd.SerialNo = wmi_HD["SerialNumber"].ToString();
++i;
}
ManagementObjectSearcher searcher;
searcher = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
string serial_number="";
foreach (ManagementObject wmi_HD in searcher.Get())
{
serial_number = wmi_HD["SerialNumber"].ToString();
}
MessageBox.Show(serial_number);
Check below code to get HDD Serial
ManagementObjectSearcher objSearcher = new
ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
objSearcher = new
ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
int i = 0;
foreach(ManagementObject wmi_HD in objSearcher.Get())
{
// get the hard drive from collection
// using index
HardDrive hd = (HardDrive)hdCollection[i];
// get the hardware serial no.
if (wmi_HD["SerialNumber"] == null)
hd.SerialNo = "None";
else
hd.SerialNo = wmi_HD["SerialNumber"].ToString();
++i;
}
Also You can type "wbemtest" in windows run. WBEMTEST is tool which
helps in running WQL queries.
Is there any way to get computer's mac address when there is no internet connection in c#?
I'am able to get when I have connection but not able to get when I am offline. But strongly I need the mac address for my work.
My online code;
var macAddr =
(from nic in NetworkInterface.GetAllNetworkInterfaces()
where nic.OperationalStatus == OperationalStatus.Up
select nic.GetPhysicalAddress().ToString()).FirstOrDefault();
From WMI:
public static string GetMACAddress1()
{
ManagementObjectSearcher objMOS = new ManagementObjectSearcher("Select * FROM Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMOS.Get();
string macAddress = String.Empty;
foreach (ManagementObject objMO in objMOC)
{
object tempMacAddrObj = objMO["MacAddress"];
if (tempMacAddrObj == null) //Skip objects without a MACAddress
{
continue;
}
if (macAddress == String.Empty) // only return MAC Address from first card that has a MAC Address
{
macAddress = tempMacAddrObj.ToString();
}
objMO.Dispose();
}
macAddress = macAddress.Replace(":", "");
return macAddress;
}
From System.Net namespace:
public static string GetMACAddress2()
{
NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
String sMacAddress = string.Empty;
foreach (NetworkInterface adapter in nics)
{
if (sMacAddress == String.Empty)// only return MAC Address from first card
{
//IPInterfaceProperties properties = adapter.GetIPProperties(); Line is not required
sMacAddress = adapter.GetPhysicalAddress().ToString();
}
} return sMacAddress;
}
Slightly modified from How to get the MAC address of system - C-Sharp Corner
You can use WMI in C# (System.Management) to get a list of Win32_NetworkAdapter's which contains a MACAddress property.
http://msdn.microsoft.com/en-gb/library/windows/desktop/aa394216(v=vs.85).aspx