我有两个互相重载的方法publicclassCar{publicintGetPrice(stringvinNumber){stringmake=Database.GetMake(vinNumber);//expensiveoperationstringmodel=Database.GetModel(vinNumber);//expensiveoperationintyear=Database.GetYear(vinNumber);//expensiveoperationreturnthis.GetPrice(make,model,year);}publicintGetPrice(str