WMI error with a simple query in C#

Question

I am trying to use this code on Windows 2000:

foreach (Process p in Process.GetProcesses())
{
    if (p.MainModule.FileName.EndsWith("calc.exe"))
    {
     using (ManagementObjectSearcher mos = 
                   new ManagementObjectSearcher(
                     "SELECT CommandLine,ExecutablePath 
                       FROM Win32_Process WHERE ProcessId=" + p.Id.ToString()))
     {
      using (ManagementObjectCollection moc = mos.Get())
      {
       foreach (ManagementObject mo in moc)
       {
           MessageBox.Show((string)mo["CommandLine"]);
           return;
       }
      }
     }
    }
}

This works on Windows XP and higher, but fails on Windows 2000 with an "Invalid query" error. According to MSDN, the Win32_Process object is supported on Windows 2000 and higher, so I'm not sure what I'm doing wrong. Any help would be much appreciated.

Answer 1

Sorry everyone. I just realized that the "CommandLine" field is only in Windows XP and higher. Problem solved.