MVC使用NPOI到导入excel表

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@*前台代码*@
@{
    ViewBag.Title = "Index";
}

<form method="post" enctype="multipart/form-data" >

    请选择您要导入的文件：<input type="file" name="efile" />
       <input type="submit" value="导入" />

</form>

//后台代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data.OleDb;//引入命名空间
using System.Data;
using System.IO;
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;

namespace MvcApplication1.Controllers
{
    public class ExcelController : Controller
    {
        //
        // GET: /Excel/

        /// <summary>
        /// 导入excel
        /// 运用NPOI导入
        /// </summary>
        /// <returns></returns>
        public ActionResult Index()
        {
            //判断是否有文件上传
            if(Request.Files.Count>0){
                //得到文件名称
                string filename=Request.Files[0].FileName;
               
                string houzui = filename.Substring(filename.LastIndexOf("."));

                if (houzui.ToLower() == ".xls")
                {
                    //得到新路径
                    //string path = Server.MapPath("~") + @"Excel/" + Guid.NewGuid() + houzui;
                    string path = Server.MapPath("~/Excel/"+Guid.NewGuid()+houzui);

                    //保存文件
                    Request.Files[0].SaveAs(path);

                    //打开文件
                    FileStream fs = new FileStream(path, FileMode.Open);

                    //读取整个Excel表
                    HSSFWorkbook workbook = new HSSFWorkbook(fs);

                    //查询Excel里面的表
                    HSSFSheet sheet = workbook.GetSheet("Sheet1") as HSSFSheet;

                    EntityDBEntities1 en = new EntityDBEntities1();

                    for (int i = 1; i < sheet.LastRowNum+1; i++)
                    {
                        stuinfo s = new stuinfo();

                        //获取行
                       HSSFRow row=sheet.GetRow(i) as  HSSFRow;

                        //获取第一列
                       var cell = row.GetCell(0);
                     
                       //判断第一列值的类型是否为string型
                       if(cell.CellType==NPOI.SS.UserModel.CellType.STRING){
                            s.stuno = cell.StringCellValue;

                        }
                       //判断第一列值的类型是否为int型
                        if (cell.CellType == NPOI.SS.UserModel.CellType.NUMERIC)
                        {
                            s.stuno = cell.NumericCellValue.ToString();

                        }

                         cell = row.GetCell(1);
                        if (cell.CellType == NPOI.SS.UserModel.CellType.STRING)
                        {
                            s.name = cell.StringCellValue;

                        }

                        if (cell.CellType == NPOI.SS.UserModel.CellType.NUMERIC)
                        {
                            s.name = cell.NumericCellValue.ToString();

                        }

                         cell = row.GetCell(2);
                         s.age =Convert.ToInt32(cell.NumericCellValue);
                        //添加到表里面
                         en.stuinfo.Add(s);
                    }

                    int count = en.SaveChanges();
                    //关闭
                    fs.Close();
                }
                else
                {
                    Response.Write("选择文件格式有误");
                }              
              
            }

            return View();
        }
    }
}