@using (Html.BeginForm("AddProductaction","Admin",FormMethod.Post, new { enctype = "multipart/form-data" }))

{

<input type="file" multiple id="pic_selector" name="ImgUrl" />

}

//前台页面通过 < file name = "img" > 标签数组上传图片，后台根据Request.Files["img"]来接收前台上传的图片。

            System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;

            if (files.Count == 0)

                return View();

            for (int i = 0; i < files.AllKeys.Count(); i++)

            {

                if (files.AllKeys[i] != "img")

                {

                    if (files[i].FileName.Length > 0)

                    {

                        System.Web.HttpPostedFile postedfile = files[i];

                        string filePath = "";

                        var ext = Path.GetExtension(postedfile.FileName);

                        var fileName = DateTime.Now.Ticks.ToString() + ext;

                        // 组合文件存储的相对路径

                        filePath = "/UploadImg/" + fileName;

                        // 将相对路径转换成物理路径

                        var path = Server.MapPath(filePath);

                        postedfile.SaveAs(path);

                        string fex = Path.GetExtension(postedfile.FileName);

                        //存储产品轮播图信息

                    }

                }

            }

private string SaveImg(HttpPostedFileBase file, string fileName, int userID)

        {

            //图片路径：Upload+当前日期+当前userID

            string filePath = "/Upload/"+DateTime.Now.ToString("yyyy-MM-dd")+"/"+userID.ToString()+"/";

            if (!Directory.Exists(Server.MapPath(filePath)))

            {

                Directory.CreateDirectory(Server.MapPath(filePath));

            }

            string returnPath = filePath + DateTime.Now.ToString("yyyyMMddhhmmssffff") + fileName;

            string absoluteFilePath = Server.MapPath(filePath) + DateTime.Now.ToString("yyyyMMddhhmmssffff") + fileName;

            file.SaveAs(absoluteFilePath);

            return returnPath;

        }