One of the requested features for my apps is to have an export feature. Most of the time the data is table-like in nature. As an example, users might enter every day what types of food they ate that day, and how many portions of each food type. As the data is table-like, I figure the most useful for export would be into CSV format. Then it can be read in spreadsheet software.

I'm confident I can get the data into a CSV like format without too much trouble, and found this post would should help me: http://stackoverflow.com/questions/1512883/how-to-convert-data-to-csv-or-html-format

What I'm wondering about is what I can do with the file once it has been created? Can I attach it to an email? How else can I make it available to the user so that it has some use?

Alternatively, am I going about this the wrong way and would there be a better way to offer an export function?