How to use Google map to show multiple location in Asp.net

Refer the below inks...........

http://vdsite.com/Articles/203/Using-Google-map-to-show-multiple-location-from-Database-in-Asp.net

How AJAX works with Advantage and Disadvantages in Asp.net

Refer the below link......

http://vdsite.com/Articles/211/How-Ajax-Update-panel-work-in-Asp.net-also-advantages-and-Disadvantages-of-using-Ajax?