Hi,

I am sure there is a simple way to do this, but having tried a few ways with no success I thought I better post the question.

I have a map with multiple layers (world, state, county etc.). Each layer is bound to the same data source currently and displaying data as a heat map. Depending on the the query run by the user the source could hold data associated with either countries, states, counties. This data is being pulled dynamically from a SSAS data source and to change the query the user is selecting levels of a geographic heierarchy.

The issue I have is that when the data source changes, the heat map of a particular layer is not being cleared down and remains the colour it was before even though there is no data associated with the elements. I have tried binding to the DataSource property of the map layer and using property changed events to update the UI. I have tried setting the DataSource property manually and calling DataBind(). I have also tried calling RenderWindow() after updating the source, each having no effect.

Any help would be appreciated.

Regards,

Chris