Inherit a class with a private "New()" sub?

[flycast]

Please forgive me if this is a dumb question but...

I am learing how to extend a class with some properties and methods of my own design. When I create the class code and add the Inherit statement I get this error:

Class 'PourLine' must declare a 'Sub New' because its base class 'LineClass' does not have an accessible 'Sub New' that can be called with no arguments.

When I attempt to add a sub called "New" I get this error:

First statement of this 'Sub New' must be a call to 'MyBase.New' or 'MyClass.New' because base class 'DesignCAD.LineClass' of 'Exploring_Capping_Classes.PourLine' does not have an accessible 'Sub New' that can be called with no arguments.

When I try MyBase.New() the error is:

'DesignCAD.LineClass.Private Sub New()' is not accessible in this context because it is 'Private'.

Is there any way I can create a class that inherits the methods and properties of the base class?

My simple code:

Public Class PourLine
Inherits DesignCAD.LineClass

Sub Build()
MyBase.New()
End Sub
End Class

Thanks in advance for your help.
Eric

[Cander]

Why not make the New in the inherited class protected?

[flycast]

Like This?

Public Class PourLine
Inherits DesignCAD.LineClass

Protected Sub New()
MyBase.New()


End Sub
End Class


When I do I still get the same error which is:

'DesignCAD.LineClass.Private Sub New()' is not accessible in this context because it is 'Private'.

Thanks,
Eric

[Cander]

No. The class you are inheriting. Assuming you have access to the code to do that. Otherwise, it wasnt designed with being inherited in mind.