Used to set the currently selected service and characteristic by their Ids.
bleclientcontrol.Select ServiceId, CharacteristicId
This is a convenience method used to select a specific service and/or characteristic.
To select just a service, only pass the desired service Id for ServiceId; pass empty string for CharacteristicId. To select a characteristic, pass both of the Ids.
An error will be thrown if any of the Ids aren't valid, or if an invalid combination of Ids is passed.