The example demonstrates how two Nevron Chart controls can be combined to implement drill down functionality with AJAX. In order to achieve this, the following AJAX features are used:
 
- Tooltip tool - displays the tooltips over the bar chart;
 
- Dynamic cursor tool - changes the mouse cursor over the bar chart;
 
- Dynamic image map - filters the bar chart click events;
 
- Asynchronous click processing tool - updates the image map and the fill style of the selected bar;
 
- Client side click processing - intercepts the mouse clicks over the bar chart and sends custom commands to the server;
 
- Asynchronous custom commands - custom commands are sent to the server to update the pie chart;
 
- Nevron Instant Callback - optimizes the loading time of the pie chart.