如何在C#中获取CPU的逻辑内核/线程数？

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);

逻辑处理器数量

foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get())
{
    Console.WriteLine("Number Of Logical Processors: {0}",item["NumberOfLogicalProcessors"]);
}

Environment.ProcessorCount

using System;

 class Sample 
 {
     public static void Main() 
     {
        Console.WriteLine("The number of processors on this computer is {0}.",Environment.ProcessorCount);
     }
 }

通过这个链接http://msdn.microsoft.com/en-us/library/system.environment.processorcount.aspx