/// <summary>
/// Get a SheetReader instance representing the worksheet at the given zero-based index
/// </summary>
/// <param name="sheetNumber">The zero-based index of the worksheet</param>
public SheetReader this[int sheetNumber]
{
get
{
if (_sheetReadersByInteger == null)
{
_sheetReadersByInteger = new Dictionary <int, SheetReader>();
}
if (_sheetReadersByInteger.ContainsKey(sheetNumber))
{
return(_sheetReadersByInteger[sheetNumber]);
}
if (_zippedXlsxFile == null)
{
_zippedXlsxFile = new ZippedXlsxFile(_filePath);
}
var sheetReader = new SheetReader(_zippedXlsxFile.GetWorksheetStream(sheetNumber),
_zippedXlsxFile.SharedStringsStream, _zippedXlsxFile.IsDateTimeStream);
_sheetReadersByInteger.Add(sheetNumber, sheetReader);
return(sheetReader);
}
}
/// <summary>
/// Get a SheetReader instance representing the worksheet with the given name
/// </summary>
/// <param name="sheetName">The name of the worksheet</param>
/// <exception cref="IndexOutOfRangeException">Will throw if the worksheet does not exist</exception>
public SheetReader this[string sheetName]
{
get
{
if (_sheetnameLookup == null)
{
_sheetnameLookup = new Dictionary <string, int>();
}
if (_zippedXlsxFile == null)
{
_zippedXlsxFile = new ZippedXlsxFile(_filePath);
}
if (_sheetReadersByInteger == null)
{
_sheetReadersByInteger = new Dictionary <int, SheetReader>();
}
int?sheetNumber;
if (_sheetnameLookup.ContainsKey(sheetName))
{
sheetNumber = _sheetnameLookup[sheetName];
}
else
{
sheetNumber = ReadSheetNumberFromXml(sheetName);
}
if (!sheetNumber.HasValue)
{
throw new LightweightExcelReaderSheetNotFoundException(sheetName);
}
if (_sheetReadersByInteger.ContainsKey(sheetNumber.Value))
{
var existingSheet = _sheetReadersByInteger[sheetNumber.Value];
return(existingSheet);
}
var sheetReader = new SheetReader(_zippedXlsxFile.GetWorksheetStream(sheetNumber.Value),
_zippedXlsxFile.SharedStringsStream, _zippedXlsxFile.IsDateTimeStream);
_sheetReadersByInteger.Add(sheetNumber.Value, sheetReader);
return(sheetReader);
}
}
/// <summary>
/// Construct an ExcelReader from a Stream
/// </summary>
/// <param name="stream">A stream pointing towards an xlsx format workbook</param>
public ExcelReader(Stream stream)
{
_zippedXlsxFile = new ZippedXlsxFile(stream);
}
/// <summary>
/// Construct an ExcelReader from a file path
/// </summary>
/// <param name="filePath">A file path pointing towards an xlsx format workbok</param>
public ExcelReader(string filePath)
{
_filePath = filePath;
_zippedXlsxFile = new ZippedXlsxFile(filePath);
}