Hello André,
radAjaxPanel.Alert calls the standard alert dialog. If you want to call radalert() from server-side code, you need to output JavaScript that would call this function on the client. Please check
this blog post for more information on the subject.
Kind regards,
Georgi Tunev
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Public Issue Tracking
system and vote to affect the priority of the items