(a) A contract between a principal and a sales representative under which the sales representative is to solicit wholesale orders within this state must:
(1) be in writing or in a computer-based medium; and
(2) state the method by which the sales representative's commission is to be computed and paid.
(b) The principal shall provide the sales representative with a copy of the contract.
(c) A provision in the contract establishing venue for an action arising under the contract in a state other than this state is void.