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New Message on BDOTNET
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From: SitaramanM
Message 3 in Discussion
Hi What exactly do you mean by modification. Does it mean that they will
alter/extend the functionality of 4 functions. In that case you write your control
(lets say Control X)deriving it from System.Web.UI.UserControl and create a dll. The
users of the control in turn will create their control(ControlY) deriving from the
control(ControlX) you have created and then alter the fucntionalities by overriding
the same. Finally in the aspx pages you will embed the developer's control(ControlY)
Akshit : Did not understand "use protect for the methods and for other give public".
do you mean protected for the 4 methods and public for others, then the other
methods which should not be modifiable becomes fully free for modification??? Do
note that this inheritence funda anyways wont stop from the developers from
overwriting your methods. Whereas from the object oriented perspective you will mark
the 4 methods as overridable and your derived control developers will override(s) the
methods, the shadows keyword(which is the default functionality and will just show
you a compiler warning if you dont mention it explicitly) functionality will allow the
developer to overwrite any base class defined functionality For example If i have a
code Module Module1 Sub Main()
Dim x As New Derived()
x.fn1() ' will Print "Derived Class Function Invoked"
Console.ReadLine()
End Sub End Module
Class Base
Function fn1()
Console.WriteLine("Base Class Function Invoked")
End Function End Class Class Derived
Inherits Base
Function fn1() ' Compiler warning will show, though code will execute. To avoid
compiler warning declare function as "Shadows Function fn1()"
Console.WriteLine("Derived Class Function Invoked")
End Function End Class So here even though the base class doesnt mark the
function as overridable, the derived class brutally overwrites the base class
function(iality). So even if you use inheritance and public/protected methods
regards, sr
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