System.IO.DirectoryInfo.InternalEnumerateFiles C# (CSharp) Method

        private IEnumerable<FileInfo> InternalEnumerateFiles(String searchPattern, SearchOption searchOption)
        {
            Debug.Assert(searchPattern != null);
            Debug.Assert(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly);

            return (IEnumerable<FileInfo>)FileSystem.Current.EnumerateFileSystemInfos(FullPath, searchPattern, searchOption, SearchTarget.Files);
        }