MVC文件上传03-使用Request.Files上传多个文件

本篇体验在控制器方法中使用controllerContext.HttpContext.Request.Files上传多个文件。兄弟篇为：

MVC文件上传01-使用jquery异步上传并客户端验证类型和大小       
MVC文件上传02-使用HttpPostedFileBase上传多个文件     

 

□ 控制器

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

namespace MvcApplication2.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult FileUploads()
        {
            string pathForSaving = Server.MapPath("~/Uploads");
            if (this.CreateFolderIfNeeded(pathForSaving))
            {
                foreach (string file in Request.Files)
                {
                    HttpPostedFileBase uploadFile = Request.Files[file] as HttpPostedFileBase;
                    if (uploadFile != null && uploadFile.ContentLength > 0)
                    {
                        var path = Path.Combine(pathForSaving, uploadFile.FileName);
                        uploadFile.SaveAs(path);
                    }
                }
            }
            return RedirectToAction("Index");
        }

        // 检查是否要创建上传文件夹
        private bool CreateFolderIfNeeded(string path)
        {
            bool result = true;
            if (!Directory.Exists(path))
            {
                try
                {
                    Directory.CreateDirectory(path);
                }
                catch (Exception)
                {
                    //TODO：处理异常
                    result = false;
                }
            }
            return result;
        }
    }
}

 

□ Home/Index.cshtml视图

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

@using (Html.BeginForm("FileUploads", "Home", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <input type="file" name="files1" id="file1" /><br/>
    <input type="file" name="files2" id="file2" /><br/>
    <input type="file" name="files3" id="file3" /><br/>
    <input type="submit" value="同时上传多个文件" />
}

注意：
name属性值可以不同

 

参考资料

※ ASP.NET MVC - 不使用HttpPostedFileBase 处理文件上传