npoi 导出execl 动态合并单元格内容

关注

转载最新推荐文章于 2026-05-24 13:14:40 发布 1k 阅读 AI 写同款· GEO 优化 ›

最近工作遇到了导出execl画表格，记录一下，省的下次再忘了，用的第三方的NPOI, 其中涉及到动态合并单元格，其中你想要动态合并的那列的数据，最好查询数据的时候排序一下，不然还得要处理跨行合并的问题，那样比较麻烦，所以我是先排序了一下，以下是代码

  1     public IWorkbook GetDeptExcelQuerys(YearQueryParam param, User user)
  2         {
  3 
  4             //创建workbook
  5             IWorkbook workbook;
  6             workbook = new HSSFWorkbook();
  7             ISheet sheet = workbook.CreateSheet("Sheet1");
  8             //表头样式
  9             IRow headerRow = sheet.CreateRow(0);
 10             headerRow.HeightInPoints = 25;
 11             headerRow.CreateCell(0).SetCellValue("xxxx金额记录表");
 12             ICellStyle headStyle = workbook.CreateCellStyle();
 13             headStyle.Alignment = HorizontalAlignment.Center;
 14             IFont font = workbook.CreateFont();
 15             font.Boldweight = 25;
 16             font.FontHeightInPoints = 16;
 17             font.Color = HSSFColor.Black.Index;
 18             headStyle.SetFont(font);
 19             headerRow.GetCell(0).CellStyle = headStyle;
 20             sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, 7));
 21 
 22             //border
 23             //普通单元格样式
 24             ICellStyle bodyStyle = workbook.CreateCellStyle();
 25             bodyStyle.Alignment = HorizontalAlignment.Center;
 26             bodyStyle.VerticalAlignment = VerticalAlignment.Center;
 27             IFont font1 = workbook.CreateFont();
 28             font1.Color = HSSFColor.Black.Index;
 29             font1.Boldweight = 25;
 30             font1.FontHeightInPoints = 12;
 31             bodyStyle.FillForegroundColor = HSSFColor.White.Index;
 32             bodyStyle.SetFont(font1);
 33             //设置格式
 34             IDataFormat format = workbook.CreateDataFormat();
 35             // format.GetFormat("￥#,##0") 货币格式
 36            // bodyStyle.DataFormat = format.GetFormat("Numeric");
 37            //cell.SetCellType(CellType.Numeric);
 38 
 39             // 表头
 40             Dictionary<string, string> arrList = new Dictionary<string, string> { { "序号", "Numbers" }, { "名字", "DeptName" }, { "地区", "RegionName" }, { "年份", "Year" }, { "预算金额(元)", "BudgetMoney" }, { "调整金额(元)", 
 41             "ModifyMoney" }, { "实际预算金额(元)", "RBudgetMoney" }, { "医疗总费用(元)", "TotalAmount" } };
 42             IRow headrow = sheet.CreateRow(1);
 43             var cellCount = 0;
 44             foreach (var item in arrList)
 45             {
 46                 ICell headcell = headrow.CreateCell(cellCount);
 47                 headcell.SetCellValue(item.Key.ToString());
 48                 headcell.CellStyle = headStyle;
 49                 cellCount++;
 50             }
 51             var result = GetDeptExeclQuerys(param, user);
 52 
 53             var name = string.Empty;
 54             var type = string.Empty;
 55             object vue;
 56             //填充表内数据
 57             for (int i = 0; i < result.Count; i++)
 58             {
 59                 var j = 0;
 60                 IRow row = sheet.CreateRow(i + 2);
 61                 foreach (var item in arrList)
 62                 {
 63                     ICell cell = row.CreateCell(j);
 64                     foreach (System.Reflection.PropertyInfo p in result[i].GetType().GetProperties())
 65                     {
 66                         name = p.Name;
 67                         vue = p.GetValue(result[i]);
 68                         type = p.PropertyType.Name;
 69                         if (item.Value == name)
 70                         {
 71                             if (type == "Int32" || type == "Decimal")
 72                             {
 73                                 cell.SetCellValue(CellbillIsRMB(vue, false));
 74                             }
 75                             else
 76                             {
 77                                 cell.SetCellValue(vue.ToString());
 78                             }
 79                             cell.CellStyle = bodyStyle;
 80                         }
 81                     }
 82                     j++;
 83                 }
 84 
 85             }
 86 
 87             //合并行
 88             ArrayList arrTitles = new ArrayList { { "Numbers" }, { "DeptName" }, { "RegionName" }, { "Year" }, { "BudgetMoney" }, { "ModifyMoney" }, { "RBudgetMoney" }, { "TotalAmount" } };
 89             DataTable dt = ListToDt<YearExeclResult>(result, arrTitles, false, ""); //因为我取的数据源是集合，于是转成datatable,合并单元格的时候需要用到
 90             MergeCells(sheet, dt, 0, 0, 0); //合并单元格 
 91             MergeCells(sheet, dt, 1, 1, 1);
 92             MergeCells(sheet, dt, 2, 2, 2);
 93             //列宽
 94             sheet.SetColumnWidth(0, 20 * 256);
 95             sheet.SetColumnWidth(1, 20 * 256);
 96             sheet.SetColumnWidth(2, 20 * 256);
 97             sheet.SetColumnWidth(3, 20 * 256);
 98             sheet.SetColumnWidth(4, 25 * 256);
 99             sheet.SetColumnWidth(5, 25 * 256);
100             sheet.SetColumnWidth(6, 25 * 256);
101             sheet.SetColumnWidth(7, 25 * 256);
102 
103             return workbook;
104         }

View Code

 1 /// <summary>
 2 /// 合并单元格
 3 /// </summary>
 4 /// <param name="sheet">当前sheet</param>
 5 /// <param name="dt">数据源</param>
 6 /// <param name="cellIndex">要合并的第几列</param>
 7 /// <param name="startIndex">起始列号</param>
 8 /// <param name="endIndex">终止列号</param>
 9 
10 public void MergeCells(ISheet sheet, DataTable dt, int cellIndex, int startIndex, int endIndex)
11         {
12             for (int i = 1; i < dt.Rows.Count + 2; i++)
13             {
14                 string value = sheet.GetRow(i).GetCell(cellIndex).StringCellValue;
15                 int end = i;
16                 for (int j = i + 1; j < dt.Rows.Count + 2; j++)  
17                 {
18                     string value1 = sheet.GetRow(j).GetCell(cellIndex).StringCellValue;
19                     if (value.Trim() != value1.Trim())
20                     {
21                         end = j - 1;
22                         break;
23                     }
24                     else if (value.Trim() == value1.Trim() && j == (dt.Rows.Count + 1))
25                     {
26                         end = j;
27                         break;
28                     }
29                 }
30                 sheet.AddMergedRegion(new CellRangeAddress(i, end, startIndex, endIndex));
31                 i = end;
32             }
33         }