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：
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：
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( "" );
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://HdhCmsTestcnblogs测试数据/stubborn-donkey/archive/2017/08/29/7446720.html
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