In order to familiarize yourself with the RadGauge you can take a look at RadGauge's online demos
as well as at the online documentation
The RadGauge is not actually a databound control, as it consists of several rather simple properties. Thus, you can set them programmatically by referring to extracted values from your datasource.
For example you can find the min and max values from your datasource and set them to the Min and Max properties of the RadGauge's Scale. For the Pointer's value you can use a custom function that calculates it based on scales' values or other factors.
How you get the data from your database depends on your use case, needs and preferences. You can also find useful this
help article related to the programmatic creation of the RadGauge.
the Telerik team
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