OnClientDropDownSelectedIndexChanging

Updated on Aug 24, 2026

The OnClientDropDownSelectedIndexChanging client-side event occurs when the user is changing the selected item in the DropDown.

1. The instance of the ribbonbar firing the event

2. An eventArgs parameter containing the following methods:

   • get_dropDown()

   • get_index()

   • get_cance()

   • set_cancel()