1 public HttpResponseMessage GetReportRateOutput(DateTime? begin_time = null, DateTime? end_time = null, string type = "大浮标") 2 { 3 var dataList = _adapter.DataReportRate(type, begin_time, end_time).ToList(); 4 5 NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook(); 6 NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("“" + type + "”到报率统计"); 7 8 // 第一列 9 NPOI.SS.UserModel.IRow row = sheet.CreateRow(0); 10 row.CreateCell(0).SetCellValue("站名"); 11 row.CreateCell(1).SetCellValue("应到报数"); 12 row.CreateCell(2).SetCellValue("叶绿素到报率"); 13 row.CreateCell(3).SetCellValue("气压到报率"); 14 row.CreateCell(4).SetCellValue("风速到报率"); 15 row.CreateCell(5).SetCellValue("气温到报率"); 16 row.CreateCell(6).SetCellValue("水温到报率"); 17 row.CreateCell(7).SetCellValue("波高到报率"); 18 row.CreateCell(8).SetCellValue("盐度到报率"); 19 20 NPOI.SS.UserModel.ICellStyle style = book.CreateCellStyle(); 21 style.Alignment = HorizontalAlignment.Center; 22 style.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.DarkBlue.Index; 23 style.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.DarkBlue.Index; 24 row.GetCell(0).CellStyle = style; 25 row.GetCell(1).CellStyle = style; 26 row.GetCell(2).CellStyle = style; 27 row.GetCell(3).CellStyle = style; 28 row.GetCell(4).CellStyle = style; 29 row.GetCell(5).CellStyle = style; 30 row.GetCell(6).CellStyle = style; 31 row.GetCell(7).CellStyle = style; 32 row.GetCell(8).CellStyle = style; 33 sheet.SetColumnWidth(0, 15 * 256); 34 sheet.SetColumnWidth(1, 15 * 256); 35 sheet.SetColumnWidth(2, 15 * 256); 36 sheet.SetColumnWidth(3, 15 * 256); 37 sheet.SetColumnWidth(4, 15 * 256); 38 sheet.SetColumnWidth(5, 15 * 256); 39 sheet.SetColumnWidth(6, 15 * 256); 40 sheet.SetColumnWidth(7, 15 * 256); 41 sheet.SetColumnWidth(8, 15 * 256); 42 43 44 int index = 1; 45 foreach (DataTransferStatus dataInfo in dataList) 46 { 47 // 第二列 48 NPOI.SS.UserModel.IRow row2 = sheet.CreateRow(index); 49 50 row2.CreateCell(0).SetCellValue(dataInfo.name); 51 row2.CreateCell(1).SetCellValue(dataInfo.report_number); 52 row2.CreateCell(2).SetCellValue(dataInfo.phyll_report_rate + "%"); 53 row2.CreateCell(3).SetCellValue(dataInfo.pressure_report_rate + "%"); 54 row2.CreateCell(4).SetCellValue(dataInfo.speed_report_rate + "%"); 55 row2.CreateCell(5).SetCellValue(dataInfo.temp_report_rate + "%"); 56 row2.CreateCell(6).SetCellValue(dataInfo.water_report_rate + "%"); 57 row2.CreateCell(7).SetCellValue(dataInfo.wave_report_rate + "%"); 58 row2.CreateCell(8).SetCellValue(dataInfo.salt_report_rate + "%"); 59 60 index++; 61 } 62 System.IO.MemoryStream stream = new System.IO.MemoryStream(); 63 book.Write(stream); 64 stream.Seek(0, SeekOrigin.Begin); 65 book = null; 66 HttpResponseMessage mResult = new HttpResponseMessage(System.Net.HttpStatusCode.OK); 67 mResult.Content = new StreamContent(stream); 68 mResult.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment"); 69 mResult.Content.Headers.ContentDisposition.FileName = type + "_到报率统计" + DateTime.Now.ToString("yyyy-MM-dd") + ".xls"; 70 mResult.Content.Headers.ContentType = new MediaTypeHeaderValue("application/ms-excel"); 71 72 return mResult; 73 }
1.首先导入NPOI的dll，这个在网上有很多自行下载。先去官网：http://npoi.codeplex.com/下载需要引入dll（可以选择.net2.0或者.net4.0的dll），然后在网站中添加引用。
2.引用命名空间 using NPOI.SS.UserModel
3.（此处以导出excel为例）我们要明白一个完整的excel文件是由哪几部分组成的！
（1）一张工作薄BOOK,一张工作表sheet,然后包括ROW行，Column列,Cell单元格
4.
分别创建出每一部分
NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();// NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("“" + type + "”到报率统计"); NPOI.SS.UserModel.IRow row = sheet.CreateRow(0);
设置excel文件的样式
NPOI.SS.UserModel.ICellStyle style = book.CreateCellStyle();
style.Alignment = HorizontalAlignment.Center;
style.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.DarkBlue.Index;
style.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.DarkBlue.Index;