取机器CPU号

using System.Management;

public string getCpuID()
  {
   try
   {
    ManagementClass mc = new ManagementClass("Win32_Processor");
    ManagementObjectCollection moc = mc.GetInstances();
     
    String strCpuID = null ;
    foreach( ManagementObject mo in moc )
    {
     strCpuID = mo.Properties["ProcessorId"].Value.ToString();
     break;
    }
        return strCpuID;
    //    MD5CryptoServiceProvider addMD5=new MD5CryptoServiceProvider();
    //    string newpass=ASCIIEncoding.ASCII.GetString (addMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(strCpuID)));
    //    return newpass;
    //    string newid=EncryptMD5(strCpuID);
//    string newid=GetMD5(strCpuID+"mywork");
//    return newid;
   }
   catch
   {
    return "";
   }

  }