Pass class by reference : Pass by Reference « Class Module « VB.Net Tutorial

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VB.Net Tutorial » Class Module » Pass by Reference 
6.4.3.Pass class by reference
Option Strict On

Public Class YourClass
   Private yourName As String
   Private yourNumber As Decimal

   Public Sub New(breed As String)
      yourName = breed
   End Sub

   Public ReadOnly Property Name() As String
      Get
         Return yourName
      End Get
   End Property

   Public Property Number() As Decimal
      Get
         Return yourNumber
      End Get

      Set
         yourNumber = CDec(value)
      End Set
   End Property

   Public Sub ShowInfo()
      Console.WriteLine("This " & yourName & " weighs " & yourNumber & " pounds.")
   End Sub
End Class

Public Class Tester
   Public Shared Sub Main()
      Dim mal As New YourClass("A")

      mal.Number = 130
      ChangeYourClassInfo(mal)
      mal.ShowInfo
      CompletelyChangeYourClassInfo(mal)
      mal.ShowInfo
   End Sub

   Public Shared Sub ChangeYourClassInfo(ByVal aYourClass As YourClass)
      aYourClass.Number = 125
   End Sub

   Public Shared Sub CompletelyChangeYourClassInfo(ByVal aYourClass As YourClass)
      Dim newf As New YourClass("Newfoundland")
      aYourClass = newf
   End Sub
End Class
This A weighs 125 pounds.
This A weighs 125 pounds.
6.4.Pass by Reference
6.4.1.Pass value by reference
6.4.2.Demonstrates passing by reference.
6.4.3.Pass class by reference
6.4.4.Pass Decimal by reference
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