♣ By default ASP.Net tool box window will come with 5 controls which are called as AJAX parent controls, They are
1. Script Manager
2. Script Manager Proxy
3. Timer
4. Update Panel
5. Update Progress
Script Manager :
♣ In AJAX script manager is the main important parent control, whenever we are developing a AJAX web page first we have to drag and drop script manager control
♣ Script manager class is the super class for all AJAX controls classes
♣ This control class will provide all the AJAX related methods and properties
Update Panel :
♣ Update panel is one of the AJAX container control
♣ Update panel control can contain ASP.net controls as well as AJAX controls
♣ The controls which we will add to the AJAX update panel will follow client centric programming model.