public static string GetLineByOffset(string text, int offset)
        {
            if (string.IsNullOrEmpty(text) || offset < 0 || offset > text.Length - 1)
            {
                return "";
            }
            var line = "";
            var i = offset;
            while (i <= (text.Length - 1) && text[i] != ('\r') && text[i] != '\n')
            {
                line = line + text[i];
                i += 1;
            }
            i = offset;
            line = line.Substring(1);
            while (i <= (text.Length - 1) && text[i] != ('\r') && text[i] != '\n')
            {
                line = text[i] + line;
                i -= 1;
            }
            return line;
        }