jsonStr の値を
"{submitOfferResult: 0}"
代わりに
"{submitOfferResult: OFFER_ACCEPTED}"
//javascript
var jsonStr = "{submitOfferResult: <%=SUBMIT_OFFER_RESULT.OFFER_ACCEPTED %>}";
//c#
public enum SUBMIT_OFFER_RESULT
{
OFFER_ACCEPTED = 0,
QUALIFYING_OFFER_NOT_MET = 1,
OFFER_ACCEPTED_NOT_HIGHEST_OFFER = 2,
OSP_CLOSED = 3,
AUTO_REJECTED = 4
}