When any county board shall levy taxes for any purpose in excess of the amount allowed by law, any taxpayer thereby affected, personally and for all other interested taxpayers in the county, may bring an action against the treasurer, the auditor, and the board of such county, to enjoin the collection of such taxes, and for an order requiring the defendants, or either of them, to correct the levy, and for such other order as may be proper for the correction and adjustment of such taxes and levy, notwithstanding that such taxpayers have a speedy and adequate remedy in the ordinary course of law. When so corrected and adjusted, the taxes may be collected as other taxes.