I currently have a C# desktop application that exports data and saves to a file. In the current application part of the export process presents the user with a Save File dialog so they can select the directory and filename to save.
I'd now like to migrate this application to be web based. I'm having trouble figuring out how to implement the Save File dialog so the user can select the location and enter a custom filename. The intended users could be fairly technology illiterate so I'd like to avoid the case where they don't remember the configured download directory(or how to find it) and have to go looking for the file.
Basically I'm looking for a way to forcefully and temporarily turn on the option "Ask where to save each file before downloading" in Chrome (or the equivalent in other browsers) for the download.