FiftyOne.Foundation.Mobile.Detection.WebProvider.GetMatch C# (CSharp) Method

        internal static Match GetMatch(HttpRequest request)
        {
            var matchKey = Constants.MatchKey + (request.UserAgent != null ? request.UserAgent.GetHashCode().ToString() : "");
            var hasOverrides = Feature.ProfileOverride.HasOverrides(request);

            // Get a collection to store data across the request. One may not be returned
            // depending of the configuration of the server or the current stage in the
            // pipeline.
            var items = GetContextItems(request);

            // Get the results from the items collection if if exists already.
            var match = items != null ? items[matchKey] as Match : null;

            if (match == null || hasOverrides)
            {
                // A lock is needed in case 2 simultaneous operations are done on the
                // request at the sametime. This is a rare use case but ensures robustness.
                lock (request)
                {
                    match = items != null ? items[matchKey] as Match : null;
                    if ((match == null || hasOverrides) && ActiveProvider != null)
                    {
                        // Get the match and store the list of properties and values
                        // in the context and session.
                        match = ActiveProvider.Match(GetRequiredHeaders(request));

                        // Allow other feature detection methods to override profiles.
                        Feature.ProfileOverride.Override(request, match);
                        if (items != null)
                        {
                            items[matchKey] = match;
                        }
                    }
                }
            }

            return match;
        }

        /// <summary>
        /// Gets the JavaScript to send to the specific client device based on the
        /// request context provided.
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private static string GetFeatureJavaScript(HttpContext context)
        {
            var queryString = context.Request.QueryString.ToString();
            var match       = WebProvider.GetMatch(context.Request);
            var features    = new List <string>();

            if (String.IsNullOrEmpty(queryString))
            {
                foreach (var property in WebProvider.ActiveProvider.DataSet.Properties.Where(i =>
                                                                                             i._valueType != Entities.Property.PropertyValueType.JavaScript))
                {
                    GetFeatureJavaScript(match, features, property);
                }
            }
            else
            {
                foreach (var propertyName in HttpUtility.UrlDecode(queryString).Split(
                             new char[] { ' ', ',', '&', '|' }))
                {
                    var property = WebProvider.ActiveProvider.DataSet.Properties.FirstOrDefault(i =>
                                                                                                i.Name.Equals(propertyName, StringComparison.InvariantCultureIgnoreCase));
                    if (property != null)
                    {
                        GetFeatureJavaScript(match, features, property);
                    }
                }
            }
            return(String.Format("var FODF={{{0}}};", String.Join(",", features.ToArray())));
        }