asp.net mvc 多文件上传

@{
ViewBag.Title = "多文件上传测试";
}

<h2>多文件上传测试</h2>

<form action="/Demo/Index" method="post" enctype="multipart/form-data">
<input type="file"  /><br />
<input type="file" /><br />
<input type="file" /><br />
<input type="submit" value="上传" />
</form>

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ZhaoWoAPI.Models;

namespace ZhaoWoAPI.Controllers
{
public class DemoController : Controller
{

[HttpPost]
public ActionResult Index(string content)
{

try
{
FileLogModel.Log("========================开始上传图片=====================:content=" + content);

HttpFileCollectionBase files = Request.Files;

FileLogModel.Log("==================上传图片数量为：" + files.Count+"===========================");

if(files.Count<=0)
{
FileLogModel.Log("=================无上传图片===================================" );

return Content("0");
}

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

HttpPostedFileBase hpf = files[i];

if (hpf.ContentLength <= 0)
{
continue;
}

var extension = Path.GetExtension(hpf.FileName);

FileLogModel.Log("=====================文件后缀名:"+extension+"==========================");
string datename = DateTime.Now.ToString("yyyy-MM-dd");

string path = Server.MapPath("/Resource/SendInfo/" + datename + "/");

FileLogModel.Log("=====================上传路径:" + path + "==========================");

if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}

string newfilename = path + ZhaoWoCommon.GUIDTools.GetGUID() + extension;

FileLogModel.Log("=====================完整路径:" + newfilename + "==========================");

hpf.SaveAs(newfilename);

}
FileLogModel.Log("=====================上传成功==========================" );
return Content("ok");
}
catch (Exception ex)
{

FileLogModel.Log("上传失败"+ex.Message );

return Content("error");
}
}

public ActionResult Test()
{
return View();
}

}
}