Hello Jaime Bula,
RadDataServiceDataSource is a control which "brings" data to the client. It does not "know" or "care" who is going to consume this data afterwards -- it could be a grid, a list box or a chart. Or any other items control as a matter of fact.
Here is an example of RadGridView consuming data from RadDataServiceDataSource. You should be able to easily replace RadGridView with a RadChart or something else that can show collections of data.
This online sample shows a chart bound to RadDataServiceDataSource's "first cousin" -- the RadDomainDataSource. They have similar API's, so the idea will be absolutely the same and you should be able to easily replace the DomainDataSource from the online example with a DataServiceDataSource.
To learn more about what the RadDataServiceControl actually is and how to use it, please take a look at my blog post, in case you've missed it.
Let us know if you have any particular questions regarding RadDataServiceDataSource.
the Telerik team
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