Hi everyone, new user here. I've been finding it harder and harder to get answers at EE for certain questions, and am hoping someone here will be able to help me!

Using asp.net and c#, my site allows users to save the innerhtml of a certain div to a file. Now I need the reverse.

Here's what I need: upon clicking a button, the user gets a "open file" dialog, which let him choose a file on his pc. Upon choosing...