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The interface is prepared for NPOI 2.0 actually. In NPOI 2.0, there are two namespace: XSSF and HSSF. XSSF is for xlsx, HSSF is for xls. Both implements interfaces in NPOI.SS； NPOI有3种dll：①XSSF操作xlsx格式版本的Excel；②HSSF操作xls格式版本的Excel；③SS以上两种格式的Excel都可操作； 下面的方式是使用SS的类下方法写的；
/// Description: Inserts a existing row into a new row, will automatically push down
/// any existing rows. Copy is done cell by cell and supports, and the
/// command tries to copy all properties available (style, merged cells, values, etc...)
///
private void CopyRow(IWorkbook workbook, ISheet worksheet, int sourceRowNum, int destinationRowNum)
{
// Get the source / new row
IRow newRow = worksheet.GetRow(destinationRowNum);
IRow sourceRow = worksheet.GetRow(sourceRowNum);
// If the row exist in destination, push down all rows by 1 else create a new row
if (newRow != null)
{
worksheet.ShiftRows(destinationRowNum, worksheet.LastRowNum, 1);
}
else
{
newRow = worksheet.CreateRow(destinationRowNum);
}
// Loop through source columns to add to new row
for (int i = 0; i
newCell = null;
continue;
}
// Copy style from old cell and apply to new cell
ICellStyle newCellStyle = workbook.CreateCellStyle();
newCellStyle.CloneStyleFrom(oldCell.CellStyle); ;
newCell.CellStyle = newCellStyle;
// If there is a cell comment, copy
if (newCell.CellComment != null) newCell.CellComment = oldCell.CellComment;
// If there is a cell hyperlink, copy
if (oldCell.Hyperlink != null) newCell.Hyperlink = oldCell.Hyperlink;
// Set the cell data type
newCell.SetCellType(oldCell.CellType);
// Set the cell data value
switch (oldCell.CellType)
{
case CellType.Blank:
newCell.SetCellValue(oldCell.StringCellValue);
break;
case CellType.Boolean:
newCell.SetCellValue(oldCell.BooleanCellValue);
break;
case CellType.Error:
newCell.SetCellErrorValue(oldCell.ErrorCellValue);
break;
case CellType.Formula:
newCell.SetCellFormula(oldCell.CellFormula);
break;
case CellType.Numeric:
newCell.SetCellValue(oldCell.NumericCellValue);
break;
case CellType.String:
newCell.SetCellValue(oldCell.RichStringCellValue);
break;
case CellType.Unknown:
newCell.SetCellValue(oldCell.StringCellValue);
break;
}
}
// If there are are any merged regions in the source row, copy to new row
for (int i = 0; i
CellRangeAddress newCellRangeAddress = new CellRangeAddress(newRow.RowNum,
(newRow.RowNum +
(cellRangeAddress.FirstRow -
cellRangeAddress.LastRow)),
cellRangeAddress.FirstColumn,
cellRangeAddress.LastColumn);
worksheet.AddMergedRegion(newCellRangeAddress);
}
}
}
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