Class implicitly Inherits Object : Class Inheritance « Class Module « VB.Net Tutorial

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VB.Net Tutorial » Class Module » Class Inheritance 
6.14.2.Class implicitly Inherits Object
Module Tester

   Sub Main()
      Dim point As CPoint

      point = New CPoint(25

      Console.WriteLine("X coordinate is " & point.X & _
         vbCrLf & "Y coordinate is " & point.Y)

      point.X = 10 
      point.Y = 10 

      Console.WriteLine("The new location of point is " & point.ToString())

   End Sub ' Main

End Module

Public Class CPoint
   ' implicitly Inherits Object

   Private mX, mY As Integer

   Public Sub New()
      X = 0
      Y = 0
   End Sub
   
   Public Sub New(ByVal xValue As Integer,ByVal yValue As Integer)
      X = xValue
      Y = yValue
   End Sub ' New

   Public Property X() As Integer
      Get
         Return mX
      End Get

      Set(ByVal xValue As Integer)
         mX = xValue ' no need for validation
      End Set

   End Property ' X

   Public Property Y() As Integer
      Get
         Return mY
      End Get

      Set(ByVal yValue As Integer)
         mY = yValue ' no need for validation
      End Set

   End Property ' Y

   Public Overrides Function ToString() As String
      Return "[" & mX & ", " & mY & "]"
   End Function ' ToString

End Class
X coordinate is 2
Y coordinate is 5
The new location of point is [10, 10]
6.14.Class Inheritance
6.14.1.Simple Inheritance
6.14.2.Class implicitly Inherits Object
6.14.3.Circle class that inherits from class Point
6.14.4.Inherit ToString method from Object
6.14.5.Call base method
6.14.6.Shadows member function from base class
6.14.7.Use For Each for Class Hierarchy
6.14.8.Inherit constant from base class
6.14.9.Class inheritance and polymorphism
6.14.10.Multilevel inheritance
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