FastColoredTextBoxNS.FileTextSource.ReadLine C# (CSharp) Méthode

        private string ReadLine(StreamReader sr, int i)
        {
            string line;
            var filePos = sourceFileLinePositions[i];
            if (filePos < 0)
                return "";
            fs.Seek(filePos, SeekOrigin.Begin);
            sr.DiscardBufferedData();
            line = sr.ReadLine();
            return line;
        }