override default values in a constructor

[TJS]

How can I override the default values, of a class constructor , from an
ASP.net page ?

Public Sub New( )
HeaderStyle.BackColor = ColorTranslator.FromHtml("#5C85AD")
HeaderStyle.ForeColor = Color.White
HeaderStyle.Font.Bold = True
End Sub

 

[Teemu Keiski]

If you can derive your own class from it then that way, so that create a new
default constructor (in the derived class) where base class constructor is
called, and set the new default values after that call.

Otherwise you are "at mercy" of the class's API (methods and properties) so
that can you access those properties via class's public interface and just
set them.

 

[TJS]

It is my own class, but I don't know what is meant by "create a new default
constructor where base class constructor is
called", I thought there was only one?

 

[Craig Deelsnyder]

It is my own class, but I don't know what is meant by "create a new
default
constructor where base class constructor is
called", I thought there was only one?

Constructors are not inherited (and then not overridden) by derived
classes; all classes get an empty default constructor (New()) that does
nothing. If you wish to 'override' a constructor, you have to redefine it
in the derived class, and if you wish to still run the constructor logic
that was defined in the superclass, you must call it in the first line of
code of the constructor. I believe VB.NET uses MyBase:

http://www.vbip.com/books/1861004915/chapter_4915_07.asp

 

[TJS]

thanks for the link, it confirms that constructors can be overriden and that
I have to explicitly add "MyBase.new" to the constructor, but it never tells
me how to overrride the values in the constructor, or how to call the
constructor with the override values from an ASPX file.