Question

I have an upload function in my system that stores the files on the d drive e.g D:\KBFiles. Now i need to offer these files as links through internet explorer. Obviously i cant just offer a path e.g D:\KBFiles\test.pdf. Whats the best way to handle this scenario

Answer 1

Write “proxy” file with such code and call it DownloadFile.aspx:

string fileName = Request.QueryString["file"];
string filePath = Path.Combime("D:\\KBFile", fileName);
Response.WriteFile(filePath);

Then have such link:

<a href="DownloadFile.aspx?file=test.pdf">test.pdf</a>

This allows you to check the user permissions if you’re using Login system and also you can check the requested file against some white list to prevent hacking attempts.