ASP.net 实现文件强制下载

string name = "网络上传版.pdf";// Request["url"];

int k = name.LastIndexOf("/");

name = name.Remove(0, k + 1);

string filePath = Server.MapPath("Upload/" + name);//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(name, System.Text.Encoding.UTF8));

Response.BinaryWrite(bytes);

Response.Flush();

Response.End();