AUTHOR: Marin Bratanov
DATE POSTED: June 26, 2018
Export or send a file from a tooltip.
The sample below applies when content is loaded on demand through the AjaxRequest event of a tooltip manager. There are a few other alternatives that you may find useful as well.
The tooltip manager only recreates its controls during a partial postback, because this is when they will be shown by it. A full postback means the page is being refreshed and no tooltip will be shown, so loading content for it is not needed. An export operation (sending a file) requires a full postback, however.
There are several approaches you can take:
Here are some relevant resources that showcase how the tooltip manager works and how to load data in it on demand, and how to troubleshoot some common issues you may encounter: