Object parameter passed by Value and by Reference : ByVal « Language Basics « VB.Net

Home
VB.Net
1.2D
2.Application
3.Class
4.Data Structure
5.Data Types
6.Database ADO.net
7.Development
8.Event
9.File Directory
10.Generics
11.GUI
12.Language Basics
13.LINQ
14.Network Remote
15.Security
16.Thread
17.Windows Presentation Foundation
18.Windows System
19.XML
20.XML LINQ
VB.Net Tutorial
VB.Net by API
VB.Net » Language Basics » ByValScreenshots 
Object parameter passed by Value and by Reference
Object parameter passed by Value and by Reference

Imports System

public class MainClass
   Shared Sub Main()
        Dim As New MyObject()
        Dim As MyObject = A
        A.X = 1
        Console.WriteLine("Initial state")
        Console.WriteLine("Are A and B the same? " (A Is B).ToString())
        Console.WriteLine("A.x: " + A.X.ToString() " B.x " + B.X.ToString())
        FunctionPassObjectByReference1(B)
        Console.WriteLine("After FobjByRef1")
        Console.WriteLine("Are A and B the same? " (A Is B).ToString())
        Console.WriteLine("A.x: " + A.X.ToString() " B.x " + B.X.ToString())
        A.X = 1
        B = A
        FunctionPassObjectByReference2(B)
        Console.WriteLine("After FobjByRef2")
        Console.WriteLine("Are A and B the same? " (A Is B).ToString())
        Console.WriteLine("A.x: " + A.X.ToString() " B.x " + B.X.ToString())
        A.X = 1
        B = A
        FunctionPassObjectByValue1(B)
        Console.WriteLine("After FobjByVal1")
        Console.WriteLine("Are A and B the same? " (A Is B).ToString())
        Console.WriteLine("A.x: " + A.X.ToString() " B.x " + B.X.ToString())
        A.X = 1
        B = A
        FunctionPassObjectByValue2(B)
        Console.WriteLine("After FobjByVal2")
        Console.WriteLine("Are A and B the same? " (A Is B).ToString())
        Console.WriteLine("A.x: " + A.X.ToString() " B.x " + B.X.ToString())
        
   End Sub

   Shared Public Sub FunctionPassObjectByReference1(ByRef Y As MyObject)
        Y.X = 5
    End Sub

   Shared Public Sub FunctionPassObjectByReference2(ByRef Y As MyObject)
        Y = New MyObject()
        Y.X = 5
    End Sub

   Shared Public Sub FunctionPassObjectByValue1(ByVal Y As MyObject)
        Y.X = 5
    End Sub

   Shared Public Sub FunctionPassObjectByValue2(ByVal Y As MyObject)
        Y = New MyObject()
        Y.X = 5
    End Sub

    Class MyObject
        Public As Integer
    End Class

End Class


           
       
Related examples in the same category
1.Structure parameter passed by Value and by Reference
2.String parameter passed by Value and by ReferenceString parameter passed by Value and by Reference
3.Array parameter passed by Value and by ReferenceArray parameter passed by Value and by Reference
4.Function with pass by value ParameterFunction with pass by value Parameter
5.Passing arrays and individual array elements to proceduresPassing arrays and individual array elements to procedures
6.Modify Array Element By Value Modify Array Element By Value
7.Array passed By ValueArray passed By Value
8.Squares three values ByVal and ByRef, displays resultsSquares three values ByVal and ByRef, displays results
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.