这个问题在这里已经有了答案:ModelState.IsValidisalwaysreturningfalse[duplicate](1个回答)关闭7年前。在我的Controller中这段代码:[HttpPost]publicActionResultEdit(Companycompany,FormCollectionIsCostCenters){if(ModelState.IsValid){CompanyobjNewCompany=newCompany();//oParty.CostCenters.Clear();using(PaymentAdviceEntityContainerdb1