手把手教你mvc导入excel

<div class="filebtn"> 
        @using (Html.BeginForm("importexcel", "foot", FormMethod.Post, new { enctype = "multipart/form-data" }))
          {
            <samp>请选择要上传的Excel文件：</samp>
            <span id="txt_Path"></span>
            <strong>选择文件<input name="file" type="file" id="file" /></strong>@*
            @Html.AntiFeryToken() //防止跨站请求伪造(CSRF:Cross-site request fery)攻击
           *@<input type="submit" id="ButtonUpload" value="提交"  class="offer"/> 
          }
      </div>

public class footController : Controller
  {
    //
    // GET: /foot/
    private static readonly String Folder = "/files";
    public ActionResult excel()
    {
      return View();
    }

    /// 导入excel文档
    public ActionResult importexcel()
    {
      //1.接收客户端传过来的数据
      HttpPostedFileBase file = Request.Files["file"];
      if (file == null || file.ContentLength <= 0)
      {
        return Json("请选择要上传的Excel文件", JsonRequestBehavior.AllowGet);
      }
      //string filepath = Server.MapPath(Folder);
      //if (!Directory.Exists(filepath))
      //{
      //  Directory.CreateDirectory(filepath);
      /