Asp.Net 使用Npoi导出Excel

引言

使用Npoi导出Excel 服务器可以不装任何office组件，昨天在做一个导出时用到Npoi导出Excel，而且所导Excel也符合规范，打开时不会有任何文件损坏之类的提示。但是在做导入时还是使用OleDb的方式，这种方式的导入在服务器端似乎还是需要装office组件的，有没有不需要装组件并且能照常导入的呢？

Npoi导出/下载Excel

public void NpoiExcel(DataTable dt, string title)
        {
            NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();
            NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet1");

            NPOI.SS.UserModel.IRow headerrow = sheet.CreateRow();
            ICellStyle style = book.CreateCellStyle();
            style.Alignment = HorizontalAlignment.Center;
            style.VerticalAlignment = VerticalAlignment.Center;

            for (int i = ; i < dt.Columns.Count; i++)
            {
                ICell cell = headerrow.CreateCell(i);
                cell.CellStyle = style;
                cell.SetCellValue(dt.Columns[i].ColumnName);

            }

            MemoryStream ms = new MemoryStream();
            book.Write(ms);
            Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xls", HttpUtility.UrlEncode(title + "_" + DateTime.Now.ToString("yyyy-MM-dd"), System.Text.Encoding.UTF8)));
            Response.BinaryWrite(ms.ToArray());
            Response.End();
            book = null;
            ms.Close();
            ms.Dispose();
        }

Asp.Net导入

导入仍然是用OleDb这种方式，有没有其他方式搞定呢？

/// <summary>
        /// 连接Excel  读取Excel数据   并返回DataSet数据集合
        /// </summary>
        /// <param name="filepath">Excel服务器路径</param>
        /// <param name="tableName">Excel表名称</param>
        /// <returns></returns>
        public static System.Data.DataSet ExcelSqlConnection(string filepath, string tableName)
        {

            string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";
            OleDbConnection ExcelConn = new OleDbConnection(strCon);
            try
            {
                string strCom = string.Format("SELECT * FROM [Sheet1$]");
                ExcelConn.Open();
                OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, ExcelConn);
                DataSet ds = new DataSet();
                myCommand.Fill(ds, "[" + tableName + "$]");
                ExcelConn.Close();
                return ds;
            }
            catch
            {
                ExcelConn.Close();
                return null;
            }
        }