使用NPOI 汇出EXCEL，设置样式，字体等
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;
///
/// 由DataSet导出Excel
///
/// 要导出数据的DataTable
/// 指定Excel工作表名称
///
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;
}