您可以获得与处理器有关的多种不同信息：
- 物理处理器数量
- 核心数
- 逻辑处理器数。
这些都可以不同。对于具有2个启用双核超线程的处理器的计算机，则有2个物理处理器，4个内核和8个逻辑处理器。
逻辑处理器的数量可通过Environment类获得，但其他信息仅可通过WMI获得（并且可能必须安装一些修补程序或Service
Pack才能在某些系统上获得它）：
确保在项目中添加对System.Management.dll的引用。 在.NET Core中，该 引用
作为NuGet包可用（仅适用于Windows）。
物理处理器：
foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get()){ Console.WriteLine("Number Of Physical Processors: {0} ", item["NumberOfProcessors"]);}核心数：
int coreCount = 0;foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_Processor").Get()){ coreCount += int.Parse(item["NumberOfCores"].ToString());}Console.WriteLine("Number Of Cores: {0}", coreCount);逻辑处理器：
Console.WriteLine("Number Of Logical Processors: {0}", Environment.ProcessorCount);要么
foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get()){ Console.WriteLine("Number Of Logical Processors: {0}", item["NumberOfLogicalProcessors"]);}Windows排除的处理器：
您还可以在 setupapi.dll中 使用Windows
API调用来发现已从Windows排除的处理器（例如，通过启动设置），并且使用上述方法无法检测到。下面的代码给出了存在的逻辑处理器的总数（我无法弄清楚如何区分物理处理器与逻辑处理器），包括已从Windows中排除的逻辑处理器：
static void Main(string[] args){ int deviceCount = 0; IntPtr deviceList = IntPtr.Zero; // GUID for processor classid Guid processorGuid = new Guid("{50127dc3-0f36-415e-a6cc-4cb3be910b65}"); try { // get a list of all processor devices deviceList = SetupDiGetClassDevs(ref processorGuid, "ACPI", IntPtr.Zero, (int)DIGCF.PRESENT); // attempt to process each item in the list for (int deviceNumber = 0; ; deviceNumber++) { SP_DEVINFO_DATA deviceInfo = new SP_DEVINFO_DATA(); deviceInfo.cbSize = Marshal.SizeOf(deviceInfo); // attempt to read the device info from the list, if this fails, we're at the end of the list if (!SetupDiEnumDeviceInfo(deviceList, deviceNumber, ref deviceInfo)) { deviceCount = deviceNumber; break; } } } finally { if (deviceList != IntPtr.Zero) { SetupDiDestroyDeviceInfoList(deviceList); } } Console.WriteLine("Number of cores: {0}", deviceCount);}[Dllimport("setupapi.dll", SetLastError = true)]private static extern IntPtr SetupDiGetClassDevs(ref Guid ClassGuid, [MarshalAs(UnmanagedType.LPStr)]String enumerator, IntPtr hwndParent, Int32 Flags);[Dllimport("setupapi.dll", SetLastError = true)]private static extern Int32 SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet);[Dllimport("setupapi.dll", SetLastError = true)]private static extern bool SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, Int32 MemberIndex, ref SP_DEVINFO_DATA DeviceInterfaceData);[StructLayout(LayoutKind.Sequential)]private struct SP_DEVINFO_DATA{ public int cbSize; public Guid ClassGuid; public uint DevInst; public IntPtr Reserved;}private enum DIGCF{ DEFAULT = 0x1, PRESENT = 0x2, ALLCLASSES = 0x4, PROFILE = 0x8, DEVICEINTERFACE = 0x10,}
