ACAT.Extensions.Default.FunctionalAgents.FileBrowserAgent.FileBrowserScanner.getAllFiles C# (CSharp) Method

        private List<FileInfo> getAllFiles(String[] folders, SortOrder order)
        {
            var retVal = new List<FileInfo>();

            foreach (var folder in folders)
            {
                var fileList = getAllFiles(folder, order);
                if (fileList.Any())
                {
                    retVal.AddRange(fileList);
                }
            }

            switch (order)
            {
                case SortOrder.DateDescending:
                    retVal = retVal.OrderByDescending(f => f.LastWriteTime).ToList();
                    break;

                case SortOrder.DateAscending:
                    retVal = retVal.OrderBy(f => f.LastWriteTime).ToList();
                    break;

                case SortOrder.AtoZ:
                    retVal = retVal.OrderBy(f => f.Name).ToList();
                    break;

                case SortOrder.ZtoA:
                    retVal = retVal.OrderByDescending(f => f.Name).ToList();
                    break;
            }

            return retVal;
        }