using System;

using System.Regex;

​

public class Program

{

    public static void Main()

    {

        Regex TabletRegex = new Regex(@"(ipad|tablet|(android(?!.*mobile))|(windows(?!.*phone)(.*touch))|kindle|playbook|silk|(puffin(?!.*(IP|AP|WP)))!(?:\b(MS)?IE\s+|\bTrident\/7\.0;.*\s+rv:)(\d+))", RegexOptions.IgnoreCase);

        Console.WriteLine(TabletRegex.IsMatch("Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/5.0)"));

    }

}