ManagementObjectSearcher("SELECT * FROM Win32_USBController")出错

rc520ll 2020-12-04 02:17:11

在拔插设备时，多次执行到这一句，第二次执行出错，是什么问题呢，有没有人遇到过探讨一下

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获取CPU及硬盘序列号 string Cpu_ID = ""; string Hard_Driver = ""; try { ManagementClass mcCpu = new ManagementClass("win32_Processor"); ManagementObjectCollection mocCpu = mcCpu.GetInstances(); foreach (ManagementObject m in mocCpu) { Cpu_ID = m["ProcessorId"].ToString(); break; } } catch { Cpu_ID = ""; } try { ManagementObjectSearcher mcDisk = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia"); ManagementObjectCollection mocDisk = mcDisk.Get(); foreach (ManagementObject mm in mocDisk) { Hard_Driver = mm["SerialNumber"].ToString().Trim(); break; } } catch { Hard_Driver = ""; }

C#进程管理，仿Window。 private float GetProcessCUP(int Pid) { float countCpu = 0f; try { ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_PerfFormattedData_PerfProc_Process WHERE IDProcess = " + Pid ); foreach (ManagementObject queryObj in searcher.Get()) { float countAll = Environment.ProcessorCount; countCpu += float.Parse(queryObj["PercentProcessorTime"].ToString())/countAll; } } catch (ManagementException e) { //MessageBox.Show("An error occurred while querying for WMI data: " + e.Message); } return countCpu; }

C#422-动态获取本机MAC地址,ManagementObjectSearcher mys = new ManagementObjectSearcher("Select * from Win32_NetworkAdapterConfiguration");

利用WMI 获取IP信 using System; using System.Collections.Generic; using System.Text; using System.Management; namespace NetProgram { class WMICardGrab { public static void Main() { //1。 ManagementObjectSearcher query = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration WHERE IPEnabled='TRUE'"); //2。 ManagementObjectCollection queryCollection = query.Get(); foreach (ManagementObject mo in queryCollection) { string[] addresses = (string[])mo["IPAddress"]; string[] subnets = (string[])mo["IPSubnet"]; string[] defaultgateways = (string[])mo["DefaultIPGateway"]; Console.WriteLine("Network Card:{0}", mo["Description"]); Console.WriteLine(" MAC Adress:{0}", mo["MacAddress"]); foreach (string ipaddress in addresses) { Console.WriteLine(" IP Address:{0}", ipaddress); } foreach (string subnet in subnets) { Console.WriteLine(" Subnet Mask:{0}", subnet); } foreach (string defaultgageway in defaultgateways) { Console.WriteLine(" Gateway:{0}", defaultgageway); } } } } }

有几条不同的处理器信息，您可以获得有关的信息：物理处理器数量、核心数量和逻辑处理器数量，这些可以不同。两颗双核超线程(启用)处理器的机器情况下有：2个物理处理器、4个核心和8个逻辑处理器。逻辑处理器数是可通过Environment类获取，但其他信息都是只可通过WMI(您可能需要安装一些修补程序或服务包)获取：物理处理器： foreach (var item in new System.Management.ManagementObjectSearcher(Select * from Win32_ComputerSystem).Get()) { Console.WriteLine(

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