Give the examples of access modifiers as applied to elements in VB

In VB, there are four access modifiers that can be applied to elements:

1. Public: This is the most permissive access modifier. When an element is declared as public, it can be accessed from any part of the program, including other classes and modules.

Example:

Public Class MyClass
    Public Sub MyMethod()
        ' Code here
    End Sub
End Class

2. Private: This is the most restrictive access modifier. When an element is declared as private, it can only be accessed within the same class or module.

Example:

Public Class MyClass
    Private myVariable As Integer

    Private Sub MyMethod()
        ' Code here
    End Sub
End Class

3. Protected: This access modifier allows access to the element within the same class or module, as well as any derived classes.

Example:

Public Class MyBaseClass
    Protected myVariable As Integer

    Protected Sub MyMethod()
        ' Code here
    End Sub
End Class

Public Class MyDerivedClass
    Inherits MyBaseClass

    Public Sub AnotherMethod()
        myVariable = 10 ' Accessing protected variable
        MyMethod() ' Accessing protected method
    End Sub
End Class

4. Friend: This access modifier allows access to the element within the same assembly (project). It is similar to the default access modifier in VB.

Example:

Friend Class MyClass
    Friend Sub MyMethod()
        ' Code here
    End Sub
End Class

These access modifiers provide control over the visibility and accessibility of elements in VB, allowing developers to enforce encapsulation and maintain code integrity.