Value change event: Verical/Horizontal scroll bar : ScrollBar « GUI « VB.Net Tutorial






Value change event: Verical/Horizontal scroll bar
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class PictureMouseDownEvent
   public Shared Sub Main
        Application.Run(New 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 Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    '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.
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents HScrollBar1 As System.Windows.Forms.HScrollBar
    Friend WithEvents VScrollBar1 As System.Windows.Forms.VScrollBar
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.HScrollBar1 = New System.Windows.Forms.HScrollBar
        Me.VScrollBar1 = New System.Windows.Forms.VScrollBar
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()

        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(24, 88)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(200, 20)
        Me.TextBox1.TabIndex = 1
        Me.TextBox1.Text = ""
        '
        'HScrollBar1
        '
        Me.HScrollBar1.Location = New System.Drawing.Point(24, 152)
        Me.HScrollBar1.Name = "HScrollBar1"
        Me.HScrollBar1.Size = New System.Drawing.Size(200, 16)
        Me.HScrollBar1.TabIndex = 2
        '
        'VScrollBar1
        '
        Me.VScrollBar1.Location = New System.Drawing.Point(240, 88)
        Me.VScrollBar1.Name = "VScrollBar1"
        Me.VScrollBar1.TabIndex = 3
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(24, 120)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(200, 20)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.VScrollBar1)
        Me.Controls.Add(Me.HScrollBar1)
        Me.Controls.Add(Me.TextBox1)
        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.EventArgs) Handles MyBase.Load
        HScrollBar1.Minimum = 0
        HScrollBar1.Maximum = 100
        HScrollBar1.LargeChange = 20
        HScrollBar1.SmallChange = 5
        HScrollBar1.Value = 25
        VScrollBar1.Minimum = 0
        VScrollBar1.Maximum = 100
        VScrollBar1.LargeChange = 20
        VScrollBar1.SmallChange = 5
        VScrollBar1.Value = 25

        TextBox1.Text = "Horizontal scroll value: " & HScrollBar1.Value
        TextBox2.Text = "Vertical scroll value: " & VScrollBar1.Value
    End Sub

    Private Sub VScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles VScrollBar1.Scroll
        TextBox1.Text = "Horizontal scroll value: " & HScrollBar1.Value
        TextBox2.Text = "Vertical scroll value: " & e.NewValue
    End Sub

    Private Sub HScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles HScrollBar1.Scroll
        TextBox1.Text = "Horizontal scroll value: " & e.NewValue
        TextBox2.Text = "Vertical scroll value: " & VScrollBar1.Value
    End Sub
End Class








14.12.ScrollBar
14.12.1.Scroll Bar scrolls and get its current valueScroll Bar scrolls and get its current value
14.12.2.Value change event: Verical/Horizontal scroll barValue change event: Verical/Horizontal scroll bar
14.12.3.Use ScollBar to control font sizeUse ScollBar to control font size
14.12.4.Use ScrollBar to control the image scroll in a PictureBoxUse ScrollBar to control the image scroll in a PictureBox
14.12.5.Use ScrollBars to control the scroll of an ImageUse ScrollBars to control the scroll of an Image