IIS/ASP 文件下载与原始文件不同

Question

在IIS/ASP下有如下代码，Windows下用Chrome浏览器：

Response.ContentType = "application/exe";  //also tried application/octet-stream
Response.AddHeader("content-disposition", "attachment;filename=MyFile.exe");
Response.TransmitFile(Server.MapPath("~/MyFile.exe"));

但是当我完成下载时，我下载的文件与原始文件大小不同（下载的文件较大），并且数字签名丢失。我该如何解决？

Answer 1

这似乎可以解决问题：

FileInfo info = new FileInfo(Server.MapPath("~/MyFile.exe"));
Response.ContentType = "application/octet-stream";
Response.AddHeader("content-length", info.Length.ToString());
Response.AddHeader("content-disposition", "attachment;filename=MyFile.exe");
Response.TransmitFile(Server.MapPath("~/MyFile.exe"));