Object Class Supports all classes in the .NET Framework class hierarchy and provides low-level services to derived classes.
Class Point
Public x, y As Integer
Public Sub New(ByVal x As Integer, ByVal y As Integer)
Me.x = x
Me.y = y
End Sub
Public Overrides Function Equals(ByVal obj As Object) As Boolean
Dim objType As Type = obj.GetType()
Dim meType As Type = Me.GetType()
If Not objType.Equals(meType) Then
Return False
End If
Dim other As Point = CType(obj, Point)
Return Me.x = other.x AndAlso Me.y = other.y
End Function
Public Overrides Function GetHashCode() As Integer
Return x XOr y
End Function
Public Overrides Function ToString() As String
Return String.Format("({0}, {1})", x, y)
End Function
Public Function Copy() As Point
Return CType(Me.MemberwiseClone(), Point)
End Function
End Class
NotInheritable Public Class App
Shared Sub Main()
Dim p1 As New Point(1, 2)
Dim p2 As Point = p1.Copy()
Dim p3 As Point = p1
Console.WriteLine([Object].ReferenceEquals(p1, p2))
Console.WriteLine([Object].Equals(p1, p2))
Console.WriteLine([Object].ReferenceEquals(p1, p3))
Console.WriteLine("p1's value is: {0}", p1.ToString())
End Sub
End Class