Use of the loading sequence of ASP. NET master pages and content pages

Master template page
Content Page
If you want to transmit data from the master page to the content page, oninit
If you want data on the content page to be transmitted to the master page, reload onload
The specific details are not mentioned much. You can see the Loading Order of the following pages to understand the reason (it is useful for using masterpage for website creation)

1. Master page control init event
2. Content Control init event
3. Master page init event
4. Content Page init event
5. Content Page load event
6. Master page load event
7. Content Control load event
8. Content Page prerender event
9. Master page prerender event
10. Master page control prerender event
11. Content Control prerender event