NOPI 导出 Excel 2007

代码：

   public static void ThisTo<T>( List<T> source, string[] colums, Func<T, object[]> action, string savePath, string sheetName = "") 
        {
            XSSFWorkbook xssfworkbook = new XSSFWorkbook();
            ISheet sheet = xssfworkbook.CreateSheet(sheetName);
            IRow row = sheet.CreateRow(0);
            for (int i = 0; i < colums.Length; i++)
            {
                ICell cell = row.CreateCell(i);
                cell.SetCellValue(colums[i]);
            }
            for (int i = 0; i < source.Count; i++)
            {
                    IRow row1 = sheet.CreateRow(i + 1);
                     int colIndex = 0;
                     row1.Cells.AddRange(action(source[i]).Select(p =>
                     {
                        var colCell = row1.CreateCell(colIndex,CellType.String);
                        colCell.SetCellValue(p.ToString());
                        colIndex++;
                        return colCell;
                    }));
            }
            MemoryStream stream = new MemoryStream();
            xssfworkbook.Write(stream);
            var buf = stream.ToArray();
            using (FileStream fs = new FileStream(savePath, FileMode.Create, FileAccess.Write))
            {
                fs.Write(buf, 0, buf.Length);
                fs.Flush();
            }
        }

调用：

 ThisTo<NAMES>(a, new string[] { "Name","Gender"}, p =>
            {
                return new object[] {
                  p.Name,
                  p.Gender
                };
            }, @"D:ABCD.xlsx", "234");

说明：

       方法中第一个参数为需导出数据，第二个参数为Excel列名，第三个为导出时数据排布顺序（与第二个参数相对应），第四参数为保存地址，第五参数为sheet名，

      调用参照上述调用方法。