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DualList - Validate as Required?

Is there some way to apply a validator to a DualList so that at least 1 result is required? I notice there is a type="checkboxlist" to handle that situation. Is there something similar for a DualList or is there some (not so obvious to me) way to do this already?
duallistformOptionrequiredselectvalidate
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3 responses
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Accuraty asked Nov 5, 2013 active Nov 8, 2013

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