LINQ to Entities 不识别方法“System.String ToString()”，因此该方法无法转换为存储表达式。

var queryBrand = from brand in dbContext.BrandTranOrderTBs
                                 from orderPayment in dbContext.OrderPaymentTBs
                                 where brand.ID.ToString()  == orderPayment.OrderIDs
                                 && orderPayment.Type==(int)OrderPaymentType.Brand
                                 && orderPayment.MemberID == memberIDOfBuyer
                                 && brand.Name.Contains(keywords)
                                 select new TranOrderView { 
                                     ID=brand.ID,
                                     Name=brand.Name,
                                     OrderPaymentNo=orderPayment.OrderPaymentNo,
                                     Price=brand.Price,
                                     TranOrderStatus=brand.Status,
                                     Type = (int)TranOrderType.Brand
                                 };

                var queryBrand = from brand in dbContext.BrandTranOrderTBs.ToList()
                                 from orderPayment in dbContext.OrderPaymentTBs
                                 where brand.ID.ToString()  == orderPayment.OrderIDs
                                 && orderPayment.Type==(int)OrderPaymentType.Brand
                                 && orderPayment.MemberID == memberIDOfBuyer
                                 && brand.Name.Contains(keywords)
                                 select new TranOrderView { 
                                     ID=brand.ID,
                                     Name=brand.Name,
                                     OrderPaymentNo=orderPayment.OrderPaymentNo,
                                     Price=brand.Price,
                                     TranOrderStatus=brand.Status,
                                     Type = (int)TranOrderType.Brand
                                 };