使用NPOI 导出EXCEL，设置样式，字体等详细代码方法教程

MemoryStream ms = new MemoryStream();XSSFWorkbook workbook = new XSSFWorkbook();//创建Workbook对象for (int i = 0; i < li.Count; i++){ISheet sheet = workbook.CreateSheet("sheet"+i);//创建工作表DataTable syscomment = ec.getDtFromSYSCOMMENT("FD", "PURI09", systemInfo.Locale);DataTable tak003 = ec.getDtFromSYSCOMMENT("FD", "PUR-TAK003", systemInfo.Locale);DataRow[] dr = dt.Select("TAL002='" + li[i] + "'", "TAL005,TAL007,TAL004");               ICellStyle style = workbook.CreateCellStyle();style.Alignment = HorizontalAlignment.Center;style.WrapText = true;IFont font = workbook.CreateFont();font.FontHeightInPoints = 16;font.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;font.FontName = "標楷體";style.SetFont(font);//HEAD 样式IRow row = sheet.CreateRow(0);row.Height = 200 * 5;row.CreateCell(0).SetCellValue(getString(syscomment, "Company") + "\n" + getString(syscomment, "Report"));//设置Head的样式row.GetCell(0).CellStyle = style;MagreRange(sheet, 0, 0, 0, 13);//合并单元格//正式数据              ICellStyle styleCommonLeft= workbook.CreateCellStyle();styleCommonLeft.Alignment = HorizontalAlignment.Left;styleCommonLeft.WrapText = true;IFont fontLeft = workbook.CreateFont();fontLeft.FontHeightInPoints = 10;fontLeft.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;fontLeft.FontName = "標楷體";styleCommonLeft.SetFont(fontLeft);ICellStyle styleCommonRight = workbook.CreateCellStyle();styleCommonRight.Alignment = HorizontalAlignment.Left;styleCommonRight.VerticalAlignment = VerticalAlignment.Center;styleCommonRight.WrapText = true;IFont fontRight = workbook.CreateFont();fontRight.FontHeightInPoints = 10;fontRight.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;fontRight.FontName = "標楷體";styleCommonRight.SetFont(fontRight);ICellStyle styleBorder = workbook.CreateCellStyle();styleBorder.BorderBottom = NPOI.SS.UserModel.BorderStyle.Double;styleBorder.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;styleBorder.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;styleBorder.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;styleBorder.BottomBorderColor = NPOI.HSSF.Util.HSSFColor.Black.Index;styleBorder.LeftBorderColor = NPOI.HSSF.Util.HSSFColor.Black.Index;styleBorder.RightBorderColor = NPOI.HSSF.Util.HSSFColor.Black.Index;styleBorder.TopBorderColor = NPOI.HSSF.Util.HSSFColor.Black.Index;sheet.DefaultRowHeight = 200 * 2;sheet.SetColumnWidth(0, 7 * 256);sheet.SetColumnWidth(1, 7 * 256);sheet.SetColumnWidth(2, 18 * 256);sheet.SetColumnWidth(4, 18 * 256);IRow row2 = sheet.CreateRow(1);row2.CreateCell(0).SetCellValue(getString(syscomment, "TAL001"));row2.CreateCell(2).SetCellValue(dr[0]["TAL001"].ToString());row2.CreateCell(3).SetCellValue(getString(syscomment, "TAK009"));row2.CreateCell(4).SetCellValue(dr[0]["TAK009"].ToString());row2.CreateCell(5).SetCellValue(getString(syscomment, "TAK008"));row2.CreateCell(6).SetCellValue(dr[0]["TAK008"].ToString());row2.CreateCell(8).SetCellValue(getString(syscomment, "MAC012"));row2.CreateCell(9).SetCellValue(dr[0]["MAC012"].ToString());row2.CreateCell(11).SetCellValue(getString(syscomment, "MAC013"));row2.CreateCell(12).SetCellValue(dr[0]["MAC013"].ToString());row2.GetCell(0).CellStyle = styleCommonLeft;row2.GetCell(2).CellStyle = styleCommonLeft;row2.GetCell(3).CellStyle = styleCommonLeft;row2.GetCell(4).CellStyle = styleCommonLeft;row2.GetCell(5).CellStyle = styleCommonLeft;row2.GetCell(6).CellStyle = styleCommonLeft;row2.GetCell(8).CellStyle = styleCommonLeft;row2.GetCell(9).CellStyle = styleCommonLeft;row2.GetCell(11).CellStyle = styleCommonLeft;row2.GetCell(12).CellStyle = styleCommonLeft;MagreRange(sheet, 1, 1, 0, 1);//合并单元格MagreRange(sheet, 1, 1, 6, 7);MagreRange(sheet, 1, 1, 9, 10);MagreRange(sheet, 1, 1, 12, 13);IRow row3 = sheet.CreateRow(2);row3.CreateCell(0).SetCellValue(getString(syscomment, "TAL005L"));row3.CreateCell(2).SetCellValue(dr[0]["TAL005L"].ToString());row3.CreateCell(3).SetCellValue(getString(syscomment, "TAL006L"));row3.CreateCell(4).SetCellValue(dr[0]["TAL006L"].ToString());row3.CreateCell(8).SetCellValue(getString(syscomment, "TAL007L"));row3.CreateCell(9).SetCellValue(dr[0]["TAL007L"].ToString());row3.CreateCell(11).SetCellValue(getString(syscomment, "TAK009"));row3.CreateCell(12).SetCellValue(dr[0]["TAK003"].ToString());row3.GetCell(0).CellStyle = styleCommonLeft;row3.GetCell(2).CellStyle = styleCommonLeft;row3.GetCell(3).CellStyle = styleCommonLeft;row3.GetCell(4).CellStyle = styleCommonLeft;row3.GetCell(8).CellStyle = styleCommonLeft;row3.GetCell(9).CellStyle = styleCommonLeft;row3.GetCell(11).CellStyle = styleCommonLeft;row3.GetCell(12).CellStyle = styleCommonLeft;MagreRange(sheet, 2, 2, 0, 1);//合并单元格MagreRange(sheet, 2, 2, 4, 7);MagreRange(sheet, 2, 2, 9, 10);MagreRange(sheet, 2, 2, 12, 13);IRow row4 = sheet.CreateRow(3);row4.CreateCell(0).SetCellValue(getString(syscomment, "ITEM"));row4.CreateCell(1).SetCellValue(getString(syscomment, "TAL005"));row4.CreateCell(3).SetCellValue(getString(syscomment, "TAL006"));row4.CreateCell(7).SetCellValue(getString(syscomment, "TAL007"));row4.CreateCell(8).SetCellValue(getString(syscomment, "TAL009"));row4.CreateCell(9).SetCellValue(getString(syscomment, "TAL011"));row4.CreateCell(10).SetCellValue(getString(syscomment, "TAL014"));row4.CreateCell(11).SetCellValue(getString(syscomment, "TAL012"));row4.CreateCell(12).SetCellValue(getString(syscomment, "TAL013"));row4.CreateCell(13).SetCellValue(getString(syscomment, "AMOUNT"));row4.GetCell(0).CellStyle = styleCommonLeft;row4.GetCell(1).CellStyle = styleCommonLeft;row4.GetCell(3).CellStyle = styleCommonLeft;row4.GetCell(7).CellStyle = styleCommonLeft;row4.GetCell(8).CellStyle = styleCommonLeft;row4.GetCell(9).CellStyle = styleCommonLeft;row4.GetCell(10).CellStyle = styleCommonLeft;row4.GetCell(11).CellStyle = styleCommonLeft;row4.GetCell(12).CellStyle = styleCommonLeft;row4.GetCell(13).CellStyle = styleCommonLeft;MagreRange(sheet, 3, 3, 1, 2);//合并单元格MagreRange(sheet, 3, 3, 3, 6);for (int k = 0; k < dr.GetLength(0); k++){IRow rowk = sheet.CreateRow(4 + k);rowk.CreateCell(0).SetCellValue((k + 1).ToString());rowk.CreateCell(1).SetCellValue(dr[k]["TAL005"].ToString());rowk.CreateCell(3).SetCellValue(dr[k]["TAL006"].ToString());rowk.CreateCell(7).SetCellValue(dr[k]["TAL007"].ToString());rowk.CreateCell(8).SetCellValue(dr[k]["TAL009"].ToString());rowk.CreateCell(9).SetCellValue(dr[k]["TAL011"].ToString());rowk.CreateCell(10).SetCellValue(dr[k]["TAL014"].ToString());rowk.CreateCell(11).SetCellValue(dr[k]["TAL012"].ToString());rowk.CreateCell(12).SetCellValue(dr[k]["TAL013"].ToString());rowk.CreateCell(13).SetCellValue(dr[k]["AMOUNT"].ToString());rowk.GetCell(0).CellStyle = styleCommonLeft;rowk.GetCell(1).CellStyle = styleCommonLeft;rowk.GetCell(3).CellStyle = styleCommonLeft;rowk.GetCell(7).CellStyle = styleCommonLeft;rowk.GetCell(8).CellStyle = styleCommonLeft;rowk.GetCell(9).CellStyle = styleCommonLeft;rowk.GetCell(10).CellStyle = styleCommonLeft;rowk.GetCell(11).CellStyle = styleCommonLeft;rowk.GetCell(12).CellStyle = styleCommonLeft;rowk.GetCell(13).CellStyle = styleCommonLeft;MagreRange(sheet, 4 + k, 4 + k, 1, 2);//合并单元格MagreRange(sheet, 4 + k, 4 + k, 3, 6);}int index = 4 + dr.GetLength(0);double s = 0;try{s = Convert.ToDouble(dt.Compute("sum(MAC013)", "TAL002='" + li[i] + "'"));}catch (Exception ex){}IRow rowindex1 = sheet.CreateRow(index);rowindex1.CreateCell(11).SetCellValue(getString(syscomment, "TOTAL"));rowindex1.CreateCell(12).SetCellValue(s);rowindex1.GetCell(11).CellStyle = styleCommonLeft;rowindex1.GetCell(12).CellStyle = styleCommonLeft;MagreRange(sheet, index, index, 0, 10);MagreRange(sheet, index, index, 12, 13);string tempPUR0050 = string.Join("。\n", ec.getGlobalValue("PUR-0050").Split('。'));IRow rowindex2 = sheet.CreateRow(index + 1);rowindex2.CreateCell(0).SetCellValue(getString(syscomment, "TEXT1"));rowindex2.CreateCell(2).SetCellValue(tempPUR0050);rowindex2.GetCell(0).CellStyle = styleCommonRight;rowindex2.GetCell(2).CellStyle = styleCommonLeft;rowindex2.Height = 200 * 19;MagreRange(sheet, index + 1, index + 1, 0, 1);MagreRange(sheet, index + 1, index + 1, 2, 13);IRow rowindex3 = sheet.CreateRow(index + 2);rowindex3.CreateCell(0).SetCellValue(getString(syscomment, "TEXT3"));rowindex3.CreateCell(4).SetCellValue(getString(syscomment, "TEXT4"));rowindex3.CreateCell(7).SetCellValue(getString(syscomment, "TEXT5"));rowindex3.GetCell(0).CellStyle = styleCommonLeft;rowindex3.GetCell(4).CellStyle = styleCommonLeft;rowindex3.GetCell(7).CellStyle = styleCommonLeft;MagreRange(sheet, index + 2, index + 2, 0, 1);MagreRange(sheet, index + 2, index + 2, 2, 3);MagreRange(sheet, index + 2, index + 2, 5, 6);MagreRange(sheet, index + 2, index + 2, 7, 8);MagreRange(sheet, index + 2, index + 2, 9, 13);}workbook.Write(ms);ms.Flush();workbook = null;/// <summary>   /// 由DataSet导出Excel/// </summary>   /// <param name="sourceTable">要导出数据的DataTable</param>  /// <param name="fileName">指定Excel工作表名称</param> /// <returns>Excel工作表</returns> public void ExportDataSetToExcel(string fileName){MemoryStream ms = exportExcel() as MemoryStream;HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8));HttpContext.Current.Response.BinaryWrite(ms.ToArray());HttpContext.Current.Response.End();ms.Close();ms.Dispose();ms = null;}

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