今天下午开始整理 excel 这块, 微软弄的那些库简直是个坑, 什么 com 注册之类的净是些报错.
在网上搜资料偶然碰见 npoi , 好东西, 值得使用
NPOI 是指构建在 POI 3.x 版本之上的一个程序, NPOI 可以在没有安装 Office 的情况下对 Word 或 Excel 文档进行读写操作.
NPOI 是一个开源的 C# 读写 Excel,WORD 等微软 OLE2 组件文档的项目.
https://github.com/tonyqus/npoi
我是在项目里边 nuget 里直接搜 npoi 安装直接就能用了
网上一个比较好的程序
- using System;
- using System.Data;
- using System.IO;
- using NPOI.SS.UserModel;
- using NPOI.XSSF.UserModel;
- using NPOI.HSSF.UserModel;
- namespace MakeData
- {
- public class ReadExcelHelper
- {/// <summary>
- /// 将 excel 导入到 datatable
- /// </summary>
- /// <param name="filePath">excel 路径</param>
- /// <param name="isColumnName">第一行是否是列名</param>
- /// <returns > 返回 datatable</returns>
- public static DataTable ExcelToDataTable(string filePath, bool isColumnName)
- {
- DataTable dataTable = null;
- FileStream fs = null;
- DataColumn column = null;
- DataRow dataRow = null;
- IWorkbook workbook = null;
- ISheet sheet = null;
- IRow row = null;
- ICell cell = null;
- int startRow = 0;
- try
- {
- using (fs = File.OpenRead(filePath))
- {
- // 2007 版本
- if (filePath.IndexOf(".xlsx")> 0)
- workbook = new XSSFWorkbook(fs);
- // 2003 版本
- else if (filePath.IndexOf(".xls")> 0)
- workbook = new HSSFWorkbook(fs);
- if (workbook != null)
- {
- sheet = workbook.GetSheetAt(0);// 读取第一个 sheet, 当然也可以循环读取每个 sheet
- dataTable = new DataTable();
- if (sheet != null)
- {
- int rowCount = sheet.LastRowNum;// 总行数
- if (rowCount> 0)
- {
- IRow firstRow = sheet.GetRow(0);// 第一行
- int cellCount = firstRow.LastCellNum;// 列数
- // 构建 datatable 的列
- if (isColumnName)
- {
- startRow = 1;// 如果第一行是列名, 则从第二行开始读取
- for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
- {
- cell = firstRow.GetCell(i);
- if (cell != null)
- {
- if (cell.StringCellValue != null)
- {
- column = new DataColumn(cell.StringCellValue);
- dataTable.Columns.Add(column);
- }
- }
- }
- }
- else
- {
- for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
- {
- column = new DataColumn("column" + (i + 1));
- dataTable.Columns.Add(column);
- }
- }
- // 填充行
- for (int i = startRow; i <= rowCount; ++i)
- {
- row = sheet.GetRow(i);
- if (row == null) continue;
- dataRow = dataTable.NewRow();
- for (int j = row.FirstCellNum; j < cellCount; ++j)
- {
- cell = row.GetCell(j);
- if (cell == null)
- {
- dataRow[j] = "";
- }
- else
- {
- //CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
- switch (cell.CellType)
- {
- case CellType.Blank:
- dataRow[j] = "";
- break;
- case CellType.Numeric:
- short format = cell.CellStyle.DataFormat;
- // 对时间格式 (2015.12.5,2015/12/5,2015-12-5 等) 的处理
- if (format == 14 || format == 31 || format == 57 || format == 58)
- dataRow[j] = cell.DateCellValue;
- else
- dataRow[j] = cell.NumericCellValue;
- break;
- case CellType.String:
- dataRow[j] = cell.StringCellValue;
- break;
- }
- }
- }
- dataTable.Rows.Add(dataRow);
- }
- }
- }
- }
- }
- return dataTable;
- }
- catch (Exception ex)
- {
- string mess = ex.Message;
- if (fs != null)
- {
- fs.Close();
- }
- return null;
- }
- }
- }
- }
- c#NPOI 读取 excel 比 interop 和 Microsoft.Jet.OLEDB.4.0 之类 的好的多
来源: http://www.bubuko.com/infodetail-2607407.html