C#读取系统信息

 using System;
   using System.Management;
   namespace Soyee.Comm
   {
       /// <summary>
       /// Computer Information
       /// </summary>
       public class Computer
       {
          public string CpuID;
          public string MacAddress;
          public string DiskID;
          public string IpAddress;
          public string LoginUserName;
          public string ComputerName;
          public string SystemType;
          public string TotalPhysicalMemory; //单位：M
          private static Computer _instance;
          public static Computer Instance()
          {
              if (_instance == null)
                  _instance = new Computer();
              return _instance;
          }
          protected  Computer()
          {
              CpuID=GetCpuID();
              MacAddress=GetMacAddress();
              DiskID=GetDiskID();
              IpAddress=GetIPAddress();
              LoginUserName=GetUserName();
              SystemType=GetSystemType();
              TotalPhysicalMemory=GetTotalPhysicalMemory();
              ComputerName=GetComputerName();
          }
          string  GetCpuID()
          {
              try
              {
                  //获取CPU序列号代码
                  string cpuInfo = "";//cpu序列号
                  ManagementClass mc = new ManagementClass("Win32_Processor");
                  ManagementObjectCollection moc = mc.GetInstances();
                  foreach(ManagementObject mo in moc)
                  {
                      cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
                  }
                  moc=null;
                  mc=null;
                  return cpuInfo;
              }
              catch
              {
                  return "unknow";
              }
              finally
              {
              }

          }
          string  GetMacAddress()
          {
              try
              {
                  //获取网卡硬件地址
                  string mac="";
                  ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                  ManagementObjectCollection moc = mc.GetInstances();
                  foreach(ManagementObject mo in moc)
                  {
                      if((bool)mo["IPEnabled"] == true)
                      {
                          mac=mo["MacAddress"].ToString();
                          break;
                      }
                  }
                  moc=null;
                  mc=null;
                  return mac;
              }
              catch
              {
                  return "unknow";
              }
              finally
              {
              }

          }
          string  GetIPAddress()
          {
              try
              {
                  //获取IP地址
                  string st="";
                  ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                  ManagementObjectCollection moc = mc.GetInstances();
                  foreach(ManagementObject mo in moc)
                  {
                     if((bool)mo["IPEnabled"] == true)
                     {
                         //st=mo["IpAddress"].ToString();
                         System.Array ar;
                         ar=(System.Array)(mo.Properties["IpAddress"].Value);
                         st=ar.GetValue().ToString();
                         break;
                     }
                 }
                 moc=null;
                 mc=null;
                 return st;
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }

         }

         string  GetDiskID()
         {
             try
             {
                 //获取硬盘ID
                 String HDid="";
                 ManagementClass mc = new ManagementClass("Win32_DiskDrive");
                 ManagementObjectCollection moc = mc.GetInstances();
                 foreach(ManagementObject mo in moc)
                 {
                     HDid = (string)mo.Properties["Model"].Value;
                 }
                 moc=null;
                 mc=null;
                 return HDid;
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }

         }

         /// <summary>
         /// 操作系统的登录用户名
         /// </summary>
         /// <returns></returns>
         string  GetUserName()
         {
             try
             {
                 string st="";
                 ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                 ManagementObjectCollection moc = mc.GetInstances();
                 foreach(ManagementObject mo in moc)
                 {

                     st=mo["UserName"].ToString();

                 }
                 moc=null;
                 mc=null;
                 return st;
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }

         }

         /// <summary>
         /// PC类型
         /// </summary>
         /// <returns></returns>
         string  GetSystemType()
         {
             try
             {
                 string st="";
                 ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                 ManagementObjectCollection moc = mc.GetInstances();
                 foreach(ManagementObject mo in moc)
                 {

                     st=mo["SystemType"].ToString();

                 }
                 moc=null;
                 mc=null;
                 return st;
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }

         }

         /// <summary>
         /// 物理内存
         /// </summary>
         /// <returns></returns>
         string  GetTotalPhysicalMemory()
         {
             try
             {

                 string st="";
                 ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                 ManagementObjectCollection moc = mc.GetInstances();
                 foreach(ManagementObject mo in moc)
                 {

                     st=mo["TotalPhysicalMemory"].ToString();

                 }
                 moc=null;
                 mc=null;
                 return st;
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }
         }
         /// <summary>
         ///
         /// </summary>
         /// <returns></returns>
         string  GetComputerName()
         {
             try
             {
                 return System.Environment.GetEnvironmentVariable("ComputerName");
             }
             catch
             {
                 return "unknow";
             }
             finally
             {
             }
         }

     }
 }