The State’s Attor­ney shall be the attor­ney and legal advis­er of the Board in all mat­ters per­tain­ing to the offi­cial busi­ness of the Board, and he shall con­sult with and advise the Coun­ty Board on mat­ters relat­ing to its duties, pow­ers, delib­er­a­tions and juris­dic­tion, as pro­vid­ed by law.