VB.Net Multiple DataSources for Single Line Type Chart

I am having a single chart control on a form that works fine during runtime. However, I need to use the same chart control to show data from different datasources (rather different SQL statements). The number of datasources can range upto 25 or even more. With each datasource, the title of the graph needs to change. The X-Axis and Y-Axis values are of the same type.

How can I use a timer to display graph for one datasource for a specified period of time and then it changes to another datasource?

Any tips would be appreciated.