C#获取本地计算机名,IP,MAC地址,硬盘ID

using  System; using  System.Data; using  System.Configuration; using  System.Linq; using  System.Web; using  System.Web.Security; using  System.Web.UI; using  System.Web.UI.HtmlControls; using  System.Web.UI.WebControls; using  System.Web.UI.WebControls.WebParts; using  System.Xml.Linq; using  System.Management; ///   <summary> /// Computer 的摘要说明 ///   </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;     }      public  Computer()     {         CpuID  =  GetCpuID();         MacAddress  =  GetMacAddress();         DiskID  =  GetDiskID();         IpAddress  =  GetIPAddress();         LoginUserName  =  GetUserName();         SystemType  =  GetSystemType();         TotalPhysicalMemory  =  GetTotalPhysicalMemory();         ComputerName  =  GetComputerName();     }      public   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         {         }     }      public   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         {         }     }      public   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( 0 ).ToString();                      break ;                 }             }             moc  =   null ;             mc  =   null ;              return  st;         }          catch         {              return   " unknow " ;         }          finally         {         }     }      public   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>        public   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>        public   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>        public   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>        public   string  GetComputerName()     {          try         {              return  System.Environment.GetEnvironmentVariable( " ComputerName " );         }          catch         {              return   " unknow " ;         }          finally         {         }     } }