Download file with c# WebClient

Question

I'm trying to download a csv file using c# webclient from this link:

http://www.tase.co.il/_layouts/Tase/ManagementPages/Export.aspx?sn=none&enumTblType=allShares&Columns=noneColumns&Titles=noneTitles&action=1&SubAction=0&GridId=33&CurGuid={26F9CCE6-D184-43C6-BAB9-CF7848987BFF}&ExportType=3

This link works in my browser fine; however it doesn't work when I use the following code

WebClient ta = new WebClient();
ta.DownloadFileAsync(new Uri("http://www.tase.co.il/_layouts/Tase/ManagementPages/Export.aspx?sn=none&enumTblType=allShares&Columns=noneColumns&Titles=noneTitles&action=1&SubAction=0&GridId=33&CurGuid={26F9CCE6-D184-43C6-BAB9-CF7848987BFF}&ExportType=3"), "s.csv");

I get an empty s.csv file size: 0 bytes. What can I do?

When you try to download with that code... what? What happens? — Jon Skeet, May 03 '14 at 20:01
What exactly doesn't work? Do you get any exception? runtime error or something? — Shmwel, May 03 '14 at 20:11
possible duplicate of [Webclient downloadfileasync not working](http://stackoverflow.com/questions/2496850/webclient-downloadfileasync-not-working) — Shmwel, May 03 '14 at 20:17
i dont get any exception i get empty s.csv file 0 bytes size — krukita, May 03 '14 at 21:00

score 2 · Accepted Answer · edited Dec 01 '20 at 12:13

2

I gave your code a try and it returned the same results for me. I registered for the "DownloadProgressChanged" event and could see an exception:

System.Net.WebException: The remote server returned an error: (403) Forbidden.

Adding a user-agent header based on the following link resolves the problem:

WebClient - The remote server returned an error: (403) Forbidden

edited Dec 01 '20 at 12:13

Uwe Keim

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answered May 04 '14 at 16:31

Brian Booth

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bretddog · Answer 2 · 2020-12-08T09:27:20.273

-1

This worked for similar issue:

WebClient.Headers.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0)");

https://stackoverflow.com/a/2496982/445533

Edit: Header example linked in accepted answer is not properly formatted and may fail.

edited Dec 08 '20 at 09:27

answered Dec 01 '20 at 12:11

bretddog

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You copied another answer as a new answer. IMO this should be a comment, not an answer. In addition, this seems to be the same kind of answer as the accepted one. – Uwe Keim Dec 01 '20 at 12:13
The accepted answer links to a header example that is not properly formatted. It failed in my case, while the one I posted worked. Hence this answer should be helpful. – bretddog Dec 01 '20 at 12:33

Download file with c# WebClient

2 Answers2