Detect if request is from modern browser or not

BrowserDetection.cs

namespace PWAUtils
{
    public static class BrowserDetection
    {
        static readonly Dictionary<string, string> browserMapping = new Dictionary<string, string>
        {
            //For mobile devices
            { "Chrome Mobile", "71" },
            { "Firefox Mobile", "64" },
            { "Samsung Browser", "8.2" },
            { "UC Browser", "12.12" },
            { "Chrome Mobile on iOS", "71" },
            { "Mobile Safari", "10.3" },
            //For desktop devices
            { "Edge", "79" },
            { "Firefox", "60" },
            { "Chrome", "61" },
            { "Opera", "48" },
            { "Safari", "10.1" },
            //Add your browsers here
        };
        public static bool IsModernBrowser(string browserName, string browserVersion)
        {
            if (browserMapping.ContainsKey(browserName))
            {
                string modernBrowserVersion = browserMapping[browserName];
                return browserVersion.CompareTo(modernBrowserVersion) >= 0;
            }
            return false;
        }
    }
}