web.config配置<add name="连接字符串" connectionString="data source=服务器名;Initial Catalog=数据库;Persist Security Info=True;User ID=用户名;Password=密码" providerName="System.Data.SqlClient" />建立数据库、表就省略了····1.建立模型文件FileStores.csusing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;namespace UpLoadFile.Models
{[Table("FileStore")]　　　　　　//　　　　关联表用public class FileStore{public int ID { get; set; }[DisplayName("文件类型")]public string MimeType { get; set; }[DisplayName("文件名")]public string FileName { get; set; }[DisplayName("文件路径")]public string FileUrl { get; set; }}
}2.新建文件DbConnect.cs 建立数据库链接用using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;namespace UpLoadFile.Models
{public class DbConnect : DbContext{public DbConnect(string connecting) : base(connecting) { }public DbSet<FileStore> FileStores { get; set; }}
}3.建立控制器UploadController.cs，以下是代码using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;
using UpLoadFile.Models;namespace UpLoadFile.Controllers
{public class UploadController : Controller{DbConnect db = new DbConnect("FileConnector");//数据库链接，FileConnector为web.config的链接字符串public ActionResult Index(){return View();}//文件上传public ActionResult Upload(){foreach (string upload in Request.Files){if (!HasFiles.HasFile(Request.Files[upload])) continue;string miniType = Request.Files[upload].ContentType;Stream fileStream = Request.Files[upload].InputStream;string path = AppDomain.CurrentDomain.BaseDirectory + "files\\";string filename = Path.GetFileName(Request.Files[upload].FileName);Request.Files[upload].SaveAs(Path.Combine(path, filename));var files = new FileStore(){MimeType = miniType,FileName = filename,FileUrl = Path.Combine(path, filename)};db.FileStores.Add(files);//存储到数据库
                db.SaveChanges();}return RedirectToAction("List");}//下载列表页public ActionResult List(){var list = db.FileStores.ToList();return View(list);}//文件下载public FilePathResult Download(int id){var fileinfo = db.FileStores.Find(id);return File(fileinfo.FileUrl, fileinfo.MimeType, fileinfo.FileName);}}public static class HasFiles{public static bool HasFile(this HttpPostedFileBase file){return (file != null && file.ContentLength > 0) ? true : false;}}}4.视图文件index.cshtml@model UpLoadFile.Models.FileStore
@{ViewBag.Title = "上传文件";
}<h2>上传文件</h2>
@using (Html.BeginForm("Upload", "Upload", FormMethod.Post, new { enctype = "multipart/form-data" }))
{//使用此控件会限制文件大小最大上传4m
 可在web.config中配置<httpRuntime executionTimeout= "5400 " maxRequestLength= "2048000 " 文件大小useFullyQualifiedRedirectUrl= "false " /> <div id="files"><input type="file" name="FileUpload" /></div><input type="button" id="add" value="增加" /><input type="submit" name="Submit" id="Submit" value="上传" />
}
<script type="text/javascript">var n = 1;$("#add").click(function () {var filename = "FileUpload" + n;$("#files").append("<input type=\"file\" name=\""+filename+"\" />");n++;});
</script>其他页面自己建立，下载<a href="@Url.Action("Download", new { id=Model.ID})">@Model.FileName</a>