Form values on the page are preserved between AJAX requests performed by the Telerik RadAjax controls. This concept is illustrated in a typical scenario for building a web-based address book with the RadAjaxManager control. Everything works as expected with the only difference that controls make AJAXrequests instead of postbacks.

• You can add new contacts to the system (private or work-related).
• You can edit existing contacts.
• You can delete existing contacts.
• You can filter the datagrid view to display different contact groups.