asp.net file downloading - track downloaded size

Question

I am trying to design a system for something like this with ASP.net/C#.

The users pay for downloading some content (files- mp3s/PDFs,doc etc).I should be able to tra

Answer 1

You could try looking into HTTP reponse codes (i.e: 200, 404 etc) - the client and server will be exchanging http headers so that they know what's going on - you should be able to monitor these to see if the reponses was successful (not sure - but you should be able to).

With regards to file size - I would try experiments on files with 'known' sizes, compare what the Http Logs tell you with what file explorer tells you.

Also, I've seen tools/wodgets that report file upload progress - so you're right you should be able to to the same in reverse, I guess. You could try looking at file upload code examples and tutorials - you might get some hints. I can't think of any off the top of my head - sorry.