System.Net.HttpListenerRequestUriBuilder.AppendUnicodeCodePointValuePercentEncoded C# (CSharp) Метод

        private bool AppendUnicodeCodePointValuePercentEncoded(string codePoint)
        {
            // http.sys only supports %uXXXX (4 hex-digits), even though unicode code points could have up to
            // 6 hex digits. Therefore we parse always 4 characters after %u and convert them to an int.
            int codePointValue;
            if (!int.TryParse(codePoint, NumberStyles.HexNumber, null, out codePointValue))
            {
                if (NetEventSource.IsEnabled) NetEventSource.Error(this,
                    SR.Format(SR.net_log_listener_cant_convert_percent_value, codePoint));
                return false;
            }

            string unicodeString = null;
            try
            {
                unicodeString = char.ConvertFromUtf32(codePointValue);
                AppendOctetsPercentEncoded(_requestUriString, s_utf8Encoding.GetBytes(unicodeString));

                return true;
            }
            catch (ArgumentOutOfRangeException)
            {
                if (NetEventSource.IsEnabled) NetEventSource.Error(this,
                    SR.Format(SR.net_log_listener_cant_convert_percent_value, codePoint));
            }
            catch (EncoderFallbackException e)
            {
                // If utf8Encoding.GetBytes() fails
                if (NetEventSource.IsEnabled) NetEventSource.Error(this, SR.Format(SR.net_log_listener_cant_convert_to_utf8, unicodeString, e.Message));
            }

            return false;
        }