在前一次的项目中，突然用到了这个获取本机的MAC地址，然后就研究了一下，记录下来，防止以后再用到，
使用winfrom做的，界面一个button，一个textBox,点了button以后给textBox赋值显示mac地址
附上源码
private void button3_Click(object sender, EventArgs e){try{string macAddress = GetMacAddress();if (!string.IsNullOrEmpty(macAddress)){textBox1.Text = macAddress;}else{MessageBox.Show("未能获取到MAC地址。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);}}catch (Exception ex){MessageBox.Show($"获取MAC地址时出现错误：{ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);}}private string GetMacAddress(){try{string macAddress = string.Empty;foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()){/// 仅考虑以太网的网络接口if (nic.NetworkInterfaceType == NetworkInterfaceType.Ethernet && nic.OperationalStatus == OperationalStatus.Up){// 获取网络接口的MAC地址macAddress = nic.GetPhysicalAddress().ToString();// 将连续的十六进制数格式化为带冒号分隔符的形式macAddress = FormatMacAddress(macAddress);if (!string.IsNullOrEmpty(macAddress))break;}}return macAddress;}catch (UnauthorizedAccessException){throw new Exception("没有足够的权限来访问网络接口信息，请以管理员身份运行程序。");}catch (Exception ex){throw new Exception($"获取MAC地址时出现错误：{ex.Message}");}}// 使用正则表达式将连续的十六进制数格式化为带冒号分隔符的形式private string FormatMacAddress(string macAddress){return Regex.Replace(macAddress, @"(.{2})(.{2})(.{2})(.{2})(.{2})(.{2})", "$1:$2:$3:$4:$5:$6");}
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