Get Control Handle and check its value : Control « GUI « VB.Net

Home
VB.Net
1.2D
2.Application
3.Class
4.Data Structure
5.Data Types
6.Database ADO.net
7.Date Time
8.Development
9.Event
10.File Directory
11.Generics
12.GUI
13.Internationalization I18N
14.Language Basics
15.LINQ
16.Network Remote
17.Reflection
18.Security
19.Thread
20.Windows Presentation Foundation
21.Windows System
22.XML
23.XML LINQ
VB.Net Tutorial
VB.Net by API
VB.Net » GUI » ControlScreenshots 
Get Control Handle and check its value
Get Control Handle and check its value

Imports System
Imports System.Drawing
Imports System.Reflection
Imports System.Windows.Forms

public class MainClass

   Shared Sub Main()
      Dim form1 As Form = New Form1
      Application.Run(form1)
   End Sub

End Class




Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call
    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is NothingThen
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    Friend WithEvents listBox1 As System.Windows.Forms.ListBox
    Friend WithEvents chkMulti As System.Windows.Forms.CheckBox
    Friend WithEvents lblWindow As System.Windows.Forms.Label

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()Private Sub InitializeComponent()
        Me.chkMulti = New System.Windows.Forms.CheckBox()
        Me.lblWindow = New System.Windows.Forms.Label()
        Me.listBox1 = New System.Windows.Forms.ListBox()
        Me.SuspendLayout()
        '
        'chkMulti
        '
        Me.chkMulti.Location = New System.Drawing.Point(19264)
        Me.chkMulti.Name = "chkMulti"
        Me.chkMulti.Size = New System.Drawing.Size(8016)
        Me.chkMulti.TabIndex = 1
        Me.chkMulti.Text = "MultiSelect"
        '
        'lblWindow
        '
        Me.lblWindow.Location = New System.Drawing.Point(32192)
        Me.lblWindow.Name = "lblWindow"
        Me.lblWindow.Size = New System.Drawing.Size(23216)
        Me.lblWindow.TabIndex = 2
        '
        'listBox1
        '
        Me.listBox1.Location = New System.Drawing.Point(2424)
        Me.listBox1.Name = "listBox1"
        Me.listBox1.Size = New System.Drawing.Size(144160)
        Me.listBox1.TabIndex = 0
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(513)
        Me.ClientSize = New System.Drawing.Size(292216)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lblWindow, Me.chkMulti, Me.listBox1})
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub


#End Region
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgsHandles MyBase.Load
        Dim As Integer
        For x = To 20
            listBox1().Items.Add("Entry # " & CStr(x))
        Next
        lblWindow().Text = "hWnd = " & listBox1().Handle.ToString
    End Sub

    Private Sub chkMulti_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgsHandles chkMulti.CheckedChanged
        
        If chkMulti().CheckState = CheckState.Checked Then
            listBox1().SelectionMode = SelectionMode.MultiExtended
        Else
            listBox1().SelectionMode = SelectionMode.One
        End If
        lblWindow().Text = "hWnd = " & listBox1().Handle.ToString

    End Sub

End Class

           
       
Related examples in the same category
1.Convert object to Control ObjectConvert object to Control Object
2.Control Paint DemoControl Paint Demo
3.Assign the Bitmap to the control's Image propertyAssign the Bitmap to the control's Image property
4.Component Client Rectangle and Display RectangleComponent Client Rectangle and Display Rectangle
5.Adding a control to a Form at run timeAdding a control to a Form at run time
6.Display Names for All controls on a FrameDisplay Names for All controls on a Frame
7.Get Labels from all Controls on a FormGet Labels from all Controls on a Form
w__w__w___.j_a___v__a_2s.___com_ | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.