关于C#操作Excel,复制Sheet的记录

1.先用了NPOI，去做，HSSFWorkbook 里面有一个Copy方法，但这个只支持office2003。

对应的XSSFWorkbook没有些方法。

而且这个这个方法对devexpress导出的2003的excel文件读取不了，出现异常，需要用excel打开后，另存一下才行。

var fs = new FileStream("c://pivotGrid.xls", FileMode.Open, FileAccess.Read);
HSSFWorkbook workbook = new HSSFWorkbook(fs);
var sheet = workbook.GetSheetAt(0) as HSSFSheet;

var fs2 = new FileStream("c://test3.xls", FileMode.Create);
var workbook2 = new HSSFWorkbook();
sheet.CopyTo(workbook2, "a", true, true);

workbook2.Write(fs2);
fs2.Close();

网上有些人对POI写过类似的方法：
http://blog.csdn.net/wutbiao/article/details/8696446

public class POIUtils {
//    /**
//     * 把一个excel中的cellstyletable复制到另一个excel，这里会报错，不能用这种方法，不明白呀？？？？？
//     * @param fromBook
//     * @param toBook
//     */
//    public static void copyBookCellStyle(HSSFWorkbook fromBook,HSSFWorkbook toBook){
//        for(short i=0;i<fromBook.getNumCellStyles();i++){
//            HSSFCellStyle fromStyle=fromBook.getCellStyleAt(i);
//            HSSFCellStyle toStyle=toBook.getCellStyleAt(i);
//            if(toStyle==null){
//                toStyle=toBook.createCellStyle();
//            }
//            copyCellStyle(fromStyle,toStyle);
//        }
//    }
/**
* 复制一个单元格样式到目的单元格样式
* @param fromStyle
* @param toStyle
*/
public static void copyCellStyle(HSSFCellStyle fromStyle,
HSSFCellStyle toStyle) {
toStyle.setAlignment(fromStyle.getAlignment());
//边框和边框颜色
toStyle.setBorderBottom(fromStyle.getBorderBottom());
toStyle.setBorderLeft(fromStyle.getBorderLeft());
toStyle.setBorderRight(fromStyle.getBorderRight());
toStyle.setBorderTop(fromStyle.getBorderTop());
toStyle.setTopBorderColor(fromStyle.getTopBorderColor());
toStyle.setBottomBorderColor(fromStyle.getBottomBorderColor());
toStyle.setRightBorderColor(fromStyle.getRightBorderColor());
toStyle.setLeftBorderColor(fromStyle.getLeftBorderColor());

//背景和前景
toStyle.setFillBackgroundColor(fromStyle.getFillBackgroundColor());
toStyle.setFillForegroundColor(fromStyle.getFillForegroundColor());

toStyle.setDataFormat(fromStyle.getDataFormat());
toStyle.setFillPattern(fromStyle.getFillPattern());
//        toStyle.setFont(fromStyle.getFont(null));
toStyle.setHidden(fromStyle.getHidden());
toStyle.setIndention(fromStyle.getIndention());//首行缩进
toStyle.setLocked(fromStyle.getLocked());
toStyle.setRotation(fromStyle.getRotation());//旋转
toStyle.setVerticalAlignment(fromStyle.getVerticalAlignment());
toStyle.setWrapText(fromStyle.getWrapText());

}
/**
* Sheet复制
* @param fromSheet
* @param toSheet
* @param copyValueFlag
*/
public static void copySheet(HSSFWorkbook wb,HSSFSheet fromSheet, HSSFSheet toSheet,
boolean copyValueFlag) {
//合并区域处理
mergerRegion(fromSheet, toSheet);
for (Iterator rowIt = fromSheet.rowIterator(); rowIt.hasNext();) {
HSSFRow tmpRow = (HSSFRow) rowIt.next();
HSSFRow newRow = toSheet.createRow(tmpRow.getRowNum());
//行复制
copyRow(wb,tmpRow,newRow,copyValueFlag);
}
}
/**
* 行复制功能
* @param fromRow
* @param toRow
*/
public static void copyRow(HSSFWorkbook wb,HSSFRow fromRow,HSSFRow toRow,boolean copyValueFlag){
for (Iterator cellIt = fromRow.cellIterator(); cellIt.hasNext();) {
HSSFCell tmpCell = (HSSFCell) cellIt.next();
HSSFCell newCell = toRow.createCell(tmpCell.getCellNum());
copyCell(wb,tmpCell, newCell, copyValueFlag);
}
}
/**
* 复制原有sheet的合并单元格到新创建的sheet
*
* @param sheetCreat 新创建sheet
* @param sheet      原有的sheet
*/
public static void mergerRegion(HSSFSheet fromSheet, HSSFSheet toSheet) {
int sheetMergerCount = fromSheet.getNumMergedRegions();
for (int i = 0; i < sheetMergerCount; i++) {
Region mergedRegionAt = fromSheet.getMergedRegionAt(i);
toSheet.addMergedRegion(mergedRegionAt);
}
}
/**
* 复制单元格
*
* @param srcCell
* @param distCell
* @param copyValueFlag
*            true则连同cell的内容一起复制
*/
public static void copyCell(HSSFWorkbook wb,HSSFCell srcCell, HSSFCell distCell,
boolean copyValueFlag) {
HSSFCellStyle newstyle=wb.createCellStyle();
copyCellStyle(srcCell.getCellStyle(), newstyle);
distCell.setEncoding(srcCell.getEncoding());
//样式
distCell.setCellStyle(newstyle);
//评论
if (srcCell.getCellComment() != null) {
distCell.setCellComment(srcCell.getCellComment());
}
// 不同数据类型处理
int srcCellType = srcCell.getCellType();
distCell.setCellType(srcCellType);
if (copyValueFlag) {
if (srcCellType == HSSFCell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(srcCell)) {
distCell.setCellValue(srcCell.getDateCellValue());
} else {
distCell.setCellValue(srcCell.getNumericCellValue());
}
} else if (srcCellType == HSSFCell.CELL_TYPE_STRING) {
distCell.setCellValue(srcCell.getRichStringCellValue());
} else if (srcCellType == HSSFCell.CELL_TYPE_BLANK) {
// nothing21
} else if (srcCellType == HSSFCell.CELL_TYPE_BOOLEAN) {
distCell.setCellValue(srcCell.getBooleanCellValue());
} else if (srcCellType == HSSFCell.CELL_TYPE_ERROR) {
distCell.setCellErrorValue(srcCell.getErrorCellValue());
} else if (srcCellType == HSSFCell.CELL_TYPE_FORMULA) {
distCell.setCellFormula(srcCell.getCellFormula());
} else { // nothing29
}
}
}
}

2.用微软的API实现复制：

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.Office.Interop.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using System.Reflection;

namespace UnitTestProject1
{
[TestClass]
public class UnitTestExcel
{
[TestMethod]
public void TestMethod1()
{

Excel.Application app = new Excel.Application();

Excel.Workbook workbook1 = app.Workbooks._Open("C:\\a.xlsx", Type.Missing, Type.Missing, Type.Missing, Type.Missing
, Type.Missing, Type.Missing, Type.Missing, Type.Missing
, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

Excel.Worksheet sheet1 = workbook1.Worksheets["Sheet1"] as Excel.Worksheet;

Excel.Workbook workbook2 = app.Workbooks._Open("C:\\a1.xlsx", Type.Missing, Type.Missing, Type.Missing, Type.Missing
, Type.Missing, Type.Missing, Type.Missing, Type.Missing
, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

Excel.Worksheet sheet2 = workbook2.Worksheets["Sheet1"] as Excel.Worksheet;

sheet2.Copy(Type.Missing, sheet1);

workbook1.Save();
workbook1.Close(false, Type.Missing, Type.Missing);
workbook2.Close(false, Type.Missing, Type.Missing);
}
}
}