Disco.Services.Interop.ActiveDirectory.ActiveDirectoryContext.SearchInternal C# (CSharp) Method

        internal IEnumerable<ADSearchResult> SearchInternal(IEnumerable<Tuple<ADDomain, string>> Queries, string LdapFilter, string[] LoadProperties, int? ResultLimit)
        {
            var queries = Queries.ToList();

            switch (queries.Count)
            {
                case 0: // Nothing Queried                 
                    return Enumerable.Empty<ADSearchResult>();

                case 1: // Single-search
                    var querySingle = queries[0];
                    return querySingle.Item1.SearchInternal(querySingle.Item2, LdapFilter, LoadProperties, ResultLimit);

                default: // Multi-search - Parallelize

                    var queryTasks = queries.Select(query =>
                        Task<IEnumerable<ADSearchResult>>.Factory.StartNew(() =>
                             query.Item1.SearchInternal(query.Item2, LdapFilter, LoadProperties, ResultLimit))).ToArray();

                    // Block
                    Task.WaitAll(queryTasks);

                    var results = queryTasks.SelectMany(t => t.Result);
                    if (ResultLimit.HasValue)
                        results = results.Take(ResultLimit.Value);
                    return results;
            }
        }