C#文件上传与下载的实现方法

这篇文章主要为大家详细介绍了C#文件上传与下载的实现方法，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

本文实例为大家分享了C#实现文件上传与下载的具体代码，供大家参考，具体内容如下

C#实现文件上传代码：

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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 });

									   }

C#实现文件下载功能：

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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("");

									   }