简单的excel导入导出示例分享

            #endregion
            return SuccessMsg("AdminMemberMemberIndex");
        }
//这个是下载到桌面的方法，没实现自选路径
public static void DownLoad(string FileName)
 {
             FileInfo fileInfo = new FileInfo(HttpContext.Current.Server.MapPath(FileName));
             //以字符流的形式下载文件
             FileStream fs = new FileStream(HttpContext.Current.Server.MapPath(FileName), FileMode.Open);
            byte[] bytes = new byte[(int)fs.Length];
              fs.Read(bytes, 0, bytes.Length);
            fs.Close();
            HttpContext.Current.Response.ContentType = "application/octet-stream";
               //通知浏览器下载文件而不是打开
            HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;  filename=" + HttpUtility.UrlEncode(fileInfo.Name, System.Text.Encoding.UTF8));
          HttpContext.Current.Response.BinaryWrite(bytes);
           HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.End();
        }
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上面是导出，下面是导入

                //读取

                FileStream sw = File.Open(path + file.FileName, FileMode.Open, FileAccess.Read);
                IWorkbook workbook = new XSSFWorkbook(sw);
                ISheet sheet1 = workbook.GetSheet("Sheet1");

                //最大行数
                int rowsCount = sheet1.PhysicalNumberOfRows;

                //判断首行是否符合规范  也就是Excel中的列名
                IRow firstRow = sheet1.GetRow(0);
                if (
                    !(firstRow.GetCell(0).ToString() == "名称" && firstRow.GetCell(1).ToString() == "简称" &&
                      firstRow.GetCell(2)