C#实现文件上传及文件下载功能实例代码

文件上传文件下载需求在项目中经常会遇到，今天小编给大家分享C#实现文件上传及文件下载功能实例代码，需要的朋友参考下吧

废话不多说了，直接给大家贴代码了，具体代码如下所示：

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									public ActionResult Upload()

									    {

									      // var pathUrl = "http://" + Request.Url.Authority;

									      var file = Request.Files["Filedata"];

									      var uploadFileName = file.FileName;

									      string filePath = "/File/" + uploadFileName;

									      string AbsolutePath = Server.MapPath(filePath);

									      file.SaveAs(AbsolutePath);       //将上传的东西保存     

									      return Json(new { FileName = uploadFileName, FilePath = filePath });

									    }

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									public ActionResult DownLoad(string FileName)

									    {

									      string fileName = FileName;//客户端保存的文件名 

									      string filePath = Server.MapPath("/File/"+ FileName);//路径    

									                                 //以字符流的形式下载文件   

									      FileStream fs = new FileStream(filePath, FileMode.Open);

									      byte[] bytes = new byte[(int)fs.Length];

									      fs.Read(bytes, 0, bytes.Length);

									      fs.Close();

									      Response.ContentType = "application/octet-stream";

									      //通知浏览器下载文件而不是打开  

									      Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));

									      Response.BinaryWrite(bytes);

									      Response.Flush();

									      Response.End();

									      return Json("");

									    }