public String toString() {StringBuilder buffer = new StringBuilder();buffer.append("extBook=").append(_extBookIndex);buffer.append(" firstSheet=").append(_firstSheetIndex);buffer.append(" lastSheet=").append(_lastSheetIndex);return buffer.toString();}

public override String ToString(){StringBuilder buffer = new StringBuilder();buffer.Append("extBook=").Append(_extBookIndex);buffer.Append(" firstSheet=").Append(_firstSheetIndex);buffer.Append(" lastSheet=").Append(_lastSheetIndex);return buffer.ToString();}
