sysinfo

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

namespace yournamespace
{
    class sysinfo
    {
        public static Boolean isVM()
        {
            bool foundMatch = false;
            ManagementObjectSearcher search1 = new ManagementObjectSearcher("select * from Win32_BIOS");
            var enu = search1.Get().GetEnumerator();
            if (!enu.MoveNext()) throw new Exception("Unexpected WMI query failure");
            string biosVersion = enu.Current["version"].ToString();
            string biosSerialNumber = enu.Current["SerialNumber"].ToString();

            try
            {
                foundMatch = Regex.IsMatch(biosVersion + " " + biosSerialNumber, "VMware|VIRTUAL|A M I|Xen", RegexOptions.IgnoreCase);
            }
            catch (ArgumentException)
            {
                // Syntax error in the regular expression
            }

            ManagementObjectSearcher search2 = new ManagementObjectSearcher("select * from Win32_ComputerSystem");
            var enu2 = search2.Get().GetEnumerator();
            if (!enu2.MoveNext()) throw new Exception("Unexpected WMI query failure");
            string manufacturer = enu2.Current["manufacturer"].ToString();
            string model = enu2.Current["model"].ToString();
            try
            {
                foundMatch = Regex.IsMatch(manufacturer + " " + model, "Microsoft|VMWare|Virtual", RegexOptions.IgnoreCase);
            }
            catch (ArgumentException)
            {
                // Syntax error in the regular expression
            }

            return foundMatch;
        }
    }

}