User357616875 posted
Hello Fourm,
I know very little about interfaces, but I have a problem it might be able to fix.
I have a app that deals with tourism reviews such as resorts / hotels / tourism sections (watersports)
In my BLL / DAL I have a couple of list methods, which return specific List Of Objects depending on if it is a resort or a hotel and a detailed review which is the same thing. The classes / objects are different.
The rest of the BLL methods are the same
CountReviews() as Uint16
SetReviewActive() as boolean
etc etc
If I create a DAL interfaces and use this in the BLL, do I just do some kind of object selection in the BLL and call the methods - I can userstand that just about :-)
How do I access the specific methods that exist in the Interface classes that dont implement a interface referance as they return none equal objects
Dim ReviewsCount = (CType(DALObject, Interface).CountReviews()
But them how do I access the specific methods that only exist in one of the classes Like
Function AddReview(Hotel as HotelReviewObject) as boolean
because this does notimplemtnet any referance to the interface, so I dont see how I can get to it enless I create two objects then it defeats the point of interfaces or I create two classes one for Interface and one for non standard methods
Any comments would be great :-)
