C#实现文件上传及文件下载功能实例代码

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( "" );

     }

总结

以上所述是小编给大家介绍的C#实现文件上传及文件下载功能实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！

原文链接：http://HdhCmsTestcnblogs测试数据/stubborn-donkey/archive/2017/08/29/7446720.html

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