In the last part of FusionCharts XT with ASP.NET series, we will create LinkedCharts using MS SQL Server data and C#. LinkedCharts is a pioneering concept by FusionCharts, which allows you to create unlimited levels of drill-down using a single data source. LinkedCharts is most useful when the user requires to go from a summarized view to a granular view, such as annual revenue >> quarterly revenue >> monthly revenue, and back in the reverse order. LinkedCharts help in maintaining the context of the complete data set when the user is traversing down (or up). In LinkedCharts, the parent chart contains all the data or data sources for its child charts. The child charts can also be configured in every way imaginable.