导出EXCEL，落后的写法

 1 //<summary>
 2          //导出考试成绩表
 3          //</summary>
 4          //<param name="ksid">考试ID</param>
 5          //<returns></returns>
 6         public FileResult exportExam(int ksid)
 7         {
 8             var Service = new ExamPeopleService();
 9             var ksStatistics = new ScorePeopleManageDTO();
10 
11             //创建Excel文件对象
12             var book = new NPOI.HSSF.UserModel.HSSFWorkbook();
13             //添加一个sheet
14             var sheet1 = book.CreateSheet("sheet1");
15 
16             var row1 = sheet1.CreateRow(0);
17             ICell cell = row1.CreateCell(0);
18             ICellStyle style = book.CreateCellStyle();
19             //设置单元格的样式：水平对齐居中
20             style.Alignment = HorizontalAlignment.Center;
21             //新建一个字体样式对象
22             IFont font = book.CreateFont();
23             //设置字体加粗样式
24             font.Boldweight = short.MaxValue;
25             //使用SetFont方法将字体样式添加到单元格样式中 
26             style.SetFont(font);
27             //将新的样式赋给单元格
28             cell.CellStyle = style;
29             row1.Height = 30 * 20;
30 
31             cell.SetCellValue("姓名");
32             sheet1.SetColumnWidth(0, 10 * 256);
33             cell = row1.CreateCell(1);
34             cell.CellStyle = style;
35             cell.SetCellValue("登录名（学号）");
36             sheet1.SetColumnWidth(1, 30 * 256);
37             cell = row1.CreateCell(2);
38             cell.CellStyle = style;
39             cell.SetCellValue("班级");
40             sheet1.SetColumnWidth(2, 30 * 256);
41             cell = row1.CreateCell(3);
42             cell.CellStyle = style;
43             cell.SetCellValue("成绩");
44             sheet1.SetColumnWidth(3, 10 * 256);
45             cell = row1.CreateCell(4);
46             cell.CellStyle = style;
47             cell.SetCellValue("排名");
48             sheet1.SetColumnWidth(4, 10 * 256);
49             var result = Service.DoExamExportToStream(ksid);
50             var tempPath = Request.MapPath("/Content/temp" + DateTime.Now.ToString("yyyyMMddHHmmss考试导出") + ".xlsx");
51             for (int i = 0; i < result.Count; i++)
52             {
53                 if (result[i].score == null)
54                     result[i].score = 0.00M;
55                 if (result[i].ranking == null)
56                     result[i].ranking = 0;
57                 var rowtemp = sheet1.CreateRow(i + 1);
58                 rowtemp.CreateCell(0).SetCellValue(result[i].userName);
59                 rowtemp.CreateCell(1).SetCellValue(result[i].userLoginName);
60                 rowtemp.CreateCell(2).SetCellValue(result[i].deptName);
61                 rowtemp.CreateCell(3).SetCellValue(result[i].score.ToString());
62                 rowtemp.CreateCell(4).SetCellValue(result[i].ranking.ToString());
63             }
64             //写入客户端
65             var ms = new System.IO.MemoryStream();
66             book.Write(ms);
67             ms.Seek(0, System.IO.SeekOrigin.Begin);
68             return File(ms, "application/vnd.ms-excel", result[0].ksmc + "成绩" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls");
69         }