c#获取系统内存等信息

//cpu频率

using Microsoft.Win32;

private int GetCPUFrequency() 
        {
            RegistryKey rk = Registry.LocalMachine.OpenSubKey(@"HARDWARE\DESCRIPTION\System\CentralProcessor\0");

            object obj = rk.GetValue("~MHz");
            int CPUFrequency = (int)obj;
            return CPUFrequency; 
        }
//////////////////////////////////

//磁盘空间 Management

using System.Management;

private long GetFreeDiskSpace()
            {
                ManagementObject disk = new ManagementObject(
                    "win32_logicaldisk.deviceid=\"d:\"");
                disk.Get();
                string totalByte = disk["FreeSpace"].ToString();
                long freeDiskSpaceMb = Convert.ToInt64(totalbyte)/1024/1024;
                return freeDiskSpaceMb;
            }
 

/////////////////////
//内存信息


using System;
using System.Text;
using System.Runtime.InteropServices;

namespace ConsoleApplication1
{
    /**//// <summary>
    /// Summary description for Class1.
    /// </summary>
        
        class Class1
        {
            [StructLayout(LayoutKind.Sequential)] 
            public struct MEMORY_INFO 
            { 
                public uint dwLength; 
                public uint dwMemoryLoad; 
                public uint dwTotalPhys; 
                public uint dwAvailPhys; 
                public uint dwTotalPageFile; 
                public uint dwAvailPageFile; 
                public uint dwTotalVirtual; 
                public uint dwAvailVirtual; 
            }
            [DllImport("kernel32")] 
            public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);

            public static int Main(string[] args) 
            {
                Class1 class1 = new Class1();

                class1.GetMemoryStatus();
                return 0;
            }
            private void GetMemoryStatus()
            {
                MEMORY_INFO MemInfo;
                MemInfo = new MEMORY_INFO();
                GlobalMemoryStatus(ref MemInfo);

                long totalMb = Convert.ToInt64( MemInfo.dwTotalPhys.ToString())/1024/1024;
                long avaliableMb = Convert.ToInt64( MemInfo.dwAvailPhys.ToString())/1024/1024;

                Console.WriteLine( "物理内存共有" + totalMb + " MB");
                Console.WriteLine( "可使用的物理内存有" + avaliableMb +" MB");
            }

        }
//////////////////////////////

//cpu名字

using Microsoft.Win32;
private string GetCPUName() 
            {
                RegistryKey rk = Registry.LocalMachine.OpenSubKey(@"HARDWARE\DESCRIPTION\System\CentralProcessor\0");

                object obj = rk.GetValue("ProcessorNameString");
                string CPUName = (string)obj;
                return CPUName.TrimStart(); 
            }
 

///////////////////////
//OS版本

using System;

namespace determineOS_CS
{  
class Class1
   {
      static void Main(string[] args)
      {
         // Get OperatingSystem information from the system namespace.
         System.OperatingSystem osInfo =System.Environment.OSVersion;
         
         // Determine the platform.
         switch(osInfo.Platform)
         {
            // Platform is Windows 95, Windows 98, 
            // Windows 98 Second Edition, or Windows Me.
            case System.PlatformID.Win32Windows:
         
               switch (osInfo.Version.Minor)
               {
                  case 0:
                     Console.WriteLine ("Windows 95");
                     break;
                  case 10:
                     if(osInfo.Version.Revision.ToString()=="2222A")
                        Console.WriteLine("Windows 98 Second Edition");
                     else
                        Console.WriteLine("Windows 98");
                     break;
                  case  90:
                     Console.WriteLine("Windows Me");
                     break;
               }
               break;
         
            // Platform is Windows NT 3.51, Windows NT 4.0, Windows 2000,
            // or Windows XP.
            case System.PlatformID.Win32NT:

               switch(osInfo.Version.Major)

               {
                  case 3:
                     Console.WriteLine("Windows NT 3.51");
                     break;
                  case 4:
                     Console.WriteLine("Windows NT 4.0");
                     break;
                  case 5:
                     if (osInfo.Version.Minor==0) 
                        Console.WriteLine("Windows 2000");
                     else
                        Console.WriteLine("Windows XP");
                     break;
               }break;
         }
         Console.ReadLine ();
      }
   }
}