如何在Windows Server 2008中检测C#中的防病毒？

using System;
using System.Text;
using System.Management;

namespace ConsoleApplication1
{
  class Program
  {
    public static bool AntivirusInstalled()
    {

      string wmipathstr = @"" + Environment.MachineName + @"rootSecurityCenter";
      try
      {
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(wmipathstr,"SELECT * FROM AntivirusProduct");
        ManagementObjectCollection instances = searcher.Get();
        return instances.Count > 0;
      }

      catch (Exception e)
      {
        Console.WriteLine(e.Message);
      }

      return false;
    } 

    public static void Main(string[] args)
    {
      bool returnCode = AntivirusInstalled();
      Console.WriteLine("Antivirus Installed " + returnCode.ToString());
      Console.WriteLine();
      Console.Read();
    }

  }
}

不幸的是，似乎Windows Server 2008没有SecurityCenter或SecurityCenter2命名空间，因此在尝试此方法时，我会收到无效的命名空间异常。

有没有人知道如何确定Windows Server 2008上是否有防病毒软件运行？任何帮助是赞赏！