本文告诉大家如何在 dotnet core 获取 Mac 地址
因为在 dotnetcore 是没有直接和硬件相关的，所以无法通过 WMI 的方法获取当前设备的 Mac 地址
但是在 dotnet core 可以使用下面的代码拿到本机所有的网卡地址，包括物理网卡和虚拟网卡
IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties(); NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces(); Console.WriteLine("Interface information for {0}.{1} ", computerProperties.HostName, computerProperties.DomainName); if (nics == null || nics.Length < 1) { Console.WriteLine(" No network interfaces found."); return; } Console.WriteLine(" Number of interfaces .................... : {0}", nics.Length); foreach (NetworkInterface adapter in nics) { Console.WriteLine(); Console.WriteLine(adapter.Name + "," + adapter.Description); Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length, '=')); Console.WriteLine(" Interface type .......................... : {0}", adapter.NetworkInterfaceType); Console.Write(" Physical address ........................ : "); PhysicalAddress address = adapter.GetPhysicalAddress(); byte[] bytes = address.GetAddressBytes(); for (int i = 0; i < bytes.Length; i++) { // Display the physical address in hexadecimal. Console.Write("{0}", bytes[i].ToString("X2")); // Insert a hyphen after each byte, unless we are at the end of the // address. if (i != bytes.Length - 1) { Console.Write("-"); } } Console.WriteLine(); } 运行代码，下面是控制台
Interface information for lindexi.github Number of interfaces .................... : 6 Hyper-V Virtual Ethernet Adapter #4 =================================== Interface type .......................... : Ethernet Physical address ........................ : 00-15-5D-96-39-03 Hyper-V Virtual Ethernet Adapter #3 =================================== Interface type .......................... : Ethernet Physical address ........................ : 1C-1B-0D-3C-47-91 Software Loopback Interface 1 ============================= Interface type .......................... : Loopback Physical address ........................ : Microsoft Teredo Tunneling Adapter ================================== Interface type .......................... : Tunnel Physical address ........................ : 00-00-00-00-00-00-00-E0 Hyper-V Virtual Ethernet Adapter ================================ Interface type .......................... : Ethernet Physical address ........................ : 5A-15-31-73-B0-9F Hyper-V Virtual Ethernet Adapter #2 =================================== Interface type .......................... : Ethernet Physical address ........................ : 5A-15-31-08-13-B1
但是可以看到里面有很多不需要使用的网卡，从 堆栈 网找到的方法获取当前有活跃的 ip 的网卡可以通过先判断是不是本地巡回网络等，然后判断有没有网络
foreach (NetworkInterface adapter in nics.Where(c => c.NetworkInterfaceType != NetworkInterfaceType.Loopback && c.OperationalStatus == OperationalStatus.Up))
获取当前的网卡有没 ip 有 ip 才是需要的
IPInterfaceProperties properties = adapter.GetIPProperties(); var unicastAddresses = properties.UnicastAddresses; foreach (var temp in unicastAddresses.Where(temp => temp.Address.AddressFamily == AddressFamily.InterNetwork)) { // 这个才是需要的网卡 } 简单输出网卡使用 adapter.GetPhysicalAddress().ToString() 输出，如果需要输出带连接的请使用 GetAddressBytes 然后自己输出
下面的代码是我抽出来的，可以直接使用
public static void GetActiveMacAddress(string separator = "-") { NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces(); //Debug.WriteLine("Interface information for {0}.{1} ", // computerProperties.HostName, computerProperties.DomainName); if (nics == null || nics.Length < 1) { Debug.WriteLine(" No network interfaces found."); return; } var macAddress = new List<string>(); //Debug.WriteLine(" Number of interfaces .................... : {0}", nics.Length); foreach (NetworkInterface adapter in nics.Where(c => c.NetworkInterfaceType != NetworkInterfaceType.Loopback && c.OperationalStatus == OperationalStatus.Up)) { //Debug.WriteLine(""); //Debug.WriteLine(adapter.Name + "," + adapter.Description); //Debug.WriteLine(string.Empty.PadLeft(adapter.Description.Length, '=')); //Debug.WriteLine(" Interface type .......................... : {0}", adapter.NetworkInterfaceType); //Debug.Write(" Physical address ........................ : "); //PhysicalAddress address = adapter.GetPhysicalAddress(); //byte[] bytes = address.GetAddressBytes(); //for (int i = 0; i < bytes.Length; i++) //{ // // Display the physical address in hexadecimal. // Debug.Write($"{bytes[i]:X2}"); // // Insert a hyphen after each byte, unless we are at the end of the // // address. // if (i != bytes.Length - 1) // { // Debug.Write("-"); // } //} //Debug.WriteLine(""); //Debug.WriteLine(address.ToString()); IPInterfaceProperties properties = adapter.GetIPProperties(); var unicastAddresses = properties.UnicastAddresses; if (unicastAddresses.Any(temp => temp.Address.AddressFamily == AddressFamily.InterNetwork)) { var address = adapter.GetPhysicalAddress(); if (string.IsNullOrEmpty(separator)) { macAddress.Add(address.ToString()); } else { macAddress.Add(string.Join(separator, address.GetAddressBytes())); } } } } 上面的方法不仅是在 dotnet core 可以使用，在 dotnet framework 程序同样调用，但是在 dotnet framework 还可以通过 WMI 获取
在 dotnet framework 使用 WMI 获取 MAC 地址方法
var managementClass = new ManagementClass("Win32_NetworkAdapterConfiguration"); var managementObjectCollection = managementClass.GetInstances(); foreach (var managementObject in managementObjectCollection.OfType<ManagementObject>()) { using (managementObject) { if ((bool) managementObject["IPEnabled"]) { if (managementObject["MacAddress"] == null) { return string.Empty; } return managementObject["MacAddress"].ToString().ToUpper(); } } } 输出的格式是 5A:15:31:73:B0:9F 同时输出是一个网卡
NetworkInterface.GetPhysicalAddress Method (System.Net.NetworkInformation)
PhysicalAddress Class (System.Net.NetworkInformation)
c# - .NET Core 2.x how to get the current active local network IPv4 address? - Stack Overflow
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