I'm just coming up to speed on the AJAX Toolkit, and would really like to use the CascadingDropDown controls (www.asp.net/ajaxlibrary/act_CascadingDropdown.ashx
) in conjuncture with a SQL Server database.
The thing is, the examples I keep finding always reference webmethods. Perhaps I bypassed the "why webmethods are used in general w/ AJAX" notes while coming up to speed, but it seems like the reliance on webmethods came out of the blue without any context.
Can any explain why the CascadingDropDown control relies on webmethods, and if this is something that the CascadingDropDown specifically requires, or if it's a more general AJAX toolkit reliance?