// convert Chinese Year to Integer private int ConvertCJKYearToInteger(string yearChsStr) { var year = 0; var num = 0; int dynastyYear = DateTimeFormatUtil.ParseChineseDynastyYear(yearChsStr, this.config.DynastyYearRegex, this.config.DynastyStartYear, this.config.DynastyYearMap, this.config.IntegerExtractor, this.config.NumberParser); if (dynastyYear > 0) { return(dynastyYear); } var er = this.config.IntegerExtractor.Extract(yearChsStr); if (er.Count != 0) { if (er[0].Type.Equals(Number.Constants.SYS_NUM_INTEGER, StringComparison.Ordinal)) { num = Convert.ToInt32((double)(this.config.NumberParser.Parse(er[0]).Value ?? 0)); } } if (num < 10) { num = 0; foreach (var ch in yearChsStr) { num *= 10; er = this.config.IntegerExtractor.Extract(ch.ToString(CultureInfo.InvariantCulture)); if (er.Count != 0) { if (er[0].Type.Equals(Number.Constants.SYS_NUM_INTEGER, StringComparison.Ordinal)) { num += Convert.ToInt32((double)(this.config.NumberParser.Parse(er[0]).Value ?? 0)); } } } } year = num; return(year < 10 ? -1 : year); }