ASP.Net/VB.Net - How to prompt download of a file in physical path on server?

I have zip files stored in a path that is in a physical path referenced in my web config.  I can't use a virtual directory because we will be on a web farm.  They are zip files that I will have the name in a datagrid which I want to be a linkbutton that can prompt the download of the file for the client machine.  Any idea how I can do that.
sbornstein2Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

TSmoothCommented:
Create a generic HttpHandler and open the file for read within that and write it to the response stream. Your link button would then point to something ilke "MyHttpHandler.ashx?FileID=123".
0
prairiedogCommented:
Alternatively, you can use Response stream to force the file download dialog to display. Here is how:
1. Make sure ASPNET has read access to the file or folder.
2. In the event handler that handles the click of the LinkButton, do something like this (assume you already retrieved the file path from web.config file):

Dim fi As System.IO.FileInfo = New FileInfo(path)
If (fi.Exists) Then
	Response.Clear()
	Response.AddHeader("Content-Disposition", "attachment;filename=" & fi.Name)
	Response.ContentType = "application/octstream"
	Response.AddHeader("Content-Length", fi.Length)
	Response.TransmitFile(path)
	Response.Flush()
	Response.Clear()
End If

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sbornstein2Author Commented:
this is perfect
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.