VB.Net Tutorial/GUI/ProgressBar

Four ProgressBars

<source lang="vbnet">Imports System.Windows.Forms public class ProgressBarDemo

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Inherits System.Windows.Forms.Form
   Public Sub New()
       MyBase.New()
       InitializeComponent()
   End Sub
   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
   Private components As System.ruponentModel.IContainer
   Friend WithEvents Label1 As System.Windows.Forms.Label
   Friend WithEvents Label2 As System.Windows.Forms.Label
   Friend WithEvents Label3 As System.Windows.Forms.Label
   Friend WithEvents Label4 As System.Windows.Forms.Label
   Friend WithEvents ProgressBar1 As System.Windows.Forms.ProgressBar
   Friend WithEvents ProgressBar2 As System.Windows.Forms.ProgressBar
   Friend WithEvents ProgressBar3 As System.Windows.Forms.ProgressBar
   Friend WithEvents ProgressBar4 As System.Windows.Forms.ProgressBar
   Friend WithEvents Button1 As System.Windows.Forms.Button
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.Label1 = New System.Windows.Forms.Label
       Me.Label2 = New System.Windows.Forms.Label
       Me.Label3 = New System.Windows.Forms.Label
       Me.Label4 = New System.Windows.Forms.Label
       Me.ProgressBar1 = New System.Windows.Forms.ProgressBar
       Me.ProgressBar2 = New System.Windows.Forms.ProgressBar
       Me.ProgressBar3 = New System.Windows.Forms.ProgressBar
       Me.ProgressBar4 = New System.Windows.Forms.ProgressBar
       Me.Button1 = New System.Windows.Forms.Button
       Me.SuspendLayout()
       "
       "Label1
       "
       Me.Label1.Location = New System.Drawing.Point(24, 24)
       Me.Label1.Name = "Label1"
       Me.Label1.Size = New System.Drawing.Size(40, 24)
       Me.Label1.TabIndex = 0
       "
       "Label2
       "
       Me.Label2.Location = New System.Drawing.Point(24, 56)
       Me.Label2.Name = "Label2"
       Me.Label2.Size = New System.Drawing.Size(40, 23)
       Me.Label2.TabIndex = 1
       "
       "Label3
       "
       Me.Label3.Location = New System.Drawing.Point(24, 88)
       Me.Label3.Name = "Label3"
       Me.Label3.Size = New System.Drawing.Size(40, 24)
       Me.Label3.TabIndex = 2
       "
       "Label4
       "
       Me.Label4.Location = New System.Drawing.Point(24, 128)
       Me.Label4.Name = "Label4"
       Me.Label4.Size = New System.Drawing.Size(40, 24)
       Me.Label4.TabIndex = 3
       "
       "ProgressBar1
       "
       Me.ProgressBar1.Location = New System.Drawing.Point(88, 24)
       Me.ProgressBar1.Maximum = 20
       Me.ProgressBar1.Name = "ProgressBar1"
       Me.ProgressBar1.Size = New System.Drawing.Size(176, 16)
       Me.ProgressBar1.TabIndex = 4
       "
       "ProgressBar2
       "
       Me.ProgressBar2.Location = New System.Drawing.Point(88, 56)
       Me.ProgressBar2.Maximum = 20
       Me.ProgressBar2.Name = "ProgressBar2"
       Me.ProgressBar2.Size = New System.Drawing.Size(176, 16)
       Me.ProgressBar2.TabIndex = 5
       "
       "ProgressBar3
       "
       Me.ProgressBar3.Location = New System.Drawing.Point(88, 88)
       Me.ProgressBar3.Maximum = 20
       Me.ProgressBar3.Name = "ProgressBar3"
       Me.ProgressBar3.Size = New System.Drawing.Size(176, 16)
       Me.ProgressBar3.TabIndex = 6
       "
       "ProgressBar4
       "
       Me.ProgressBar4.Location = New System.Drawing.Point(88, 120)
       Me.ProgressBar4.Maximum = 20
       Me.ProgressBar4.Name = "ProgressBar4"
       Me.ProgressBar4.Size = New System.Drawing.Size(176, 16)
       Me.ProgressBar4.TabIndex = 7
       "
       "Button1
       "
       Me.Button1.Location = New System.Drawing.Point(112, 152)
       Me.Button1.Name = "Button1"
       Me.Button1.Size = New System.Drawing.Size(64, 24)
       Me.Button1.TabIndex = 8
       Me.Button1.Text = "Start"
       "
       "Form1
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 190)
       Me.Controls.Add(Me.Button1)
       Me.Controls.Add(Me.ProgressBar4)
       Me.Controls.Add(Me.ProgressBar3)
       Me.Controls.Add(Me.ProgressBar2)
       Me.Controls.Add(Me.ProgressBar1)
       Me.Controls.Add(Me.Label4)
       Me.Controls.Add(Me.Label3)
       Me.Controls.Add(Me.Label2)
       Me.Controls.Add(Me.Label1)
       Me.ResumeLayout(False)
   End Sub
   Private temp As Int32
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim i, j, k, l As Int16
       temp = 0
       For i = 0 To 20
           ProgressBar1.Value = i
           Label1.Text = i
           For j = 0 To 20
               ProgressBar2.Value = j
               Label2.Text = j
               For k = 0 To 20
                   ProgressBar3.Value = k
                   Label3.Text = k
                   For l = 0 To 20
                       ProgressBar4.Value = l
                       Label4.Text = l
                       Me.Refresh()
                       temp = temp + 1
                   Next
               Next
           Next
       Next
   End Sub

End Class</source>

ProgressBar value

<source lang="vbnet">Imports System.Windows.Forms public class ProgressBarDemo

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class

Public Class Form1

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim i As Integer
       ProgressBar1.Value = 0
       For i = 0 To 100
       
           Dim j As Integer
           For j = 0 To 10000000
           Next j
       
           ProgressBar1.Value = i
           Label1.Text = i.ToString + "/100"
       Next i
   End Sub

End Class <Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Class Form1

   Inherits System.Windows.Forms.Form
   "Form overrides dispose to clean up the component list.
   <System.Diagnostics.DebuggerNonUserCode()> _
   Protected Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing AndAlso components IsNot Nothing Then
           components.Dispose()
       End If
       MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.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.ProgressBar1 = New System.Windows.Forms.ProgressBar
       Me.Label1 = New System.Windows.Forms.Label
       Me.Button1 = New System.Windows.Forms.Button
       Me.SuspendLayout()
       "
       "ProgressBar1
       "
       Me.ProgressBar1.Location = New System.Drawing.Point(32, 69)
       Me.ProgressBar1.Name = "ProgressBar1"
       Me.ProgressBar1.Size = New System.Drawing.Size(322, 23)
       Me.ProgressBar1.TabIndex = 0
       "
       "Label1
       "
       Me.Label1.AutoSize = True
       Me.Label1.Location = New System.Drawing.Point(170, 37)
       Me.Label1.Name = "Label1"
       Me.Label1.Size = New System.Drawing.Size(35, 12)
       Me.Label1.TabIndex = 1
       Me.Label1.Text = "0/100"
       "
       "Button1
       "
       Me.Button1.Location = New System.Drawing.Point(152, 123)
       Me.Button1.Name = "Button1"
       Me.Button1.Size = New System.Drawing.Size(75, 23)
       Me.Button1.TabIndex = 2
       Me.Button1.Text = "start"
       Me.Button1.UseVisualStyleBackColor = True
       "
       "Form1
       "
       Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 12.0!)
       Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
       Me.ClientSize = New System.Drawing.Size(383, 181)
       Me.Controls.Add(Me.Button1)
       Me.Controls.Add(Me.Label1)
       Me.Controls.Add(Me.ProgressBar1)
       Me.Name = "Form1"
       Me.Text = "Form1"
       Me.ResumeLayout(False)
       Me.PerformLayout()
   End Sub
   Friend WithEvents ProgressBar1 As System.Windows.Forms.ProgressBar
   Friend WithEvents Label1 As System.Windows.Forms.Label
   Friend WithEvents Button1 As System.Windows.Forms.Button

End Class</source>

Set step for ProgressBar

<source lang="vbnet">Imports System.Windows.Forms public class ProgressBarStep

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
       ProgressBar1.Step = 21
       ProgressBar1.Value = 0
       btnGo.Enabled = False
       Timer1.Enabled = True
   End Sub
   Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
       ProgressBar1.PerformStep()
       If ProgressBar1.Value >= ProgressBar1.Maximum Then
           Timer1.Enabled = False
           btnGo.Enabled = True
       End If
   End Sub

End Class <Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1

   Inherits System.Windows.Forms.Form
   "Form overrides dispose to clean up the component list.
   <System.Diagnostics.DebuggerNonUserCode()> _
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing AndAlso components IsNot Nothing Then
           components.Dispose()
       End If
       MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.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.ruponents = New System.ruponentModel.Container
       Me.ProgressBar1 = New System.Windows.Forms.ProgressBar
       Me.btnGo = New System.Windows.Forms.Button
       Me.Timer1 = New System.Windows.Forms.Timer(Me.ruponents)
       Me.SuspendLayout()
       "
       "ProgressBar1
       "
       Me.ProgressBar1.Location = New System.Drawing.Point(16, 48)
       Me.ProgressBar1.Name = "ProgressBar1"
       Me.ProgressBar1.Size = New System.Drawing.Size(248, 16)
       Me.ProgressBar1.TabIndex = 3
       "
       "btnGo
       "
       Me.btnGo.Location = New System.Drawing.Point(16, 16)
       Me.btnGo.Name = "btnGo"
       Me.btnGo.Size = New System.Drawing.Size(48, 24)
       Me.btnGo.TabIndex = 2
       Me.btnGo.Text = "Go"
       "
       "Timer1
       "
       Me.Timer1.Interval = 250
       "
       "Form1
       "
       Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
       Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
       Me.ClientSize = New System.Drawing.Size(282, 86)
       Me.Controls.Add(Me.ProgressBar1)
       Me.Controls.Add(Me.btnGo)
       Me.Name = "Form1"
       Me.Text = "UseProgressBar"
       Me.ResumeLayout(False)
   End Sub
   Friend WithEvents ProgressBar1 As System.Windows.Forms.ProgressBar
   Friend WithEvents btnGo As System.Windows.Forms.Button
   Friend WithEvents Timer1 As System.Windows.Forms.Timer

End Class</source>

Use Timer to control a ProgressBar

<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class TimerControlProgressBar

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Inherits System.Windows.Forms.Form

1. 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.ruponentModel.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 Button1 As System.Windows.Forms.Button
   Friend WithEvents Timer1 As System.Windows.Forms.Timer
   Friend WithEvents ProgressBar1 As System.Windows.Forms.ProgressBar
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.ruponents = New System.ruponentModel.Container
       Me.Button1 = New System.Windows.Forms.Button
       Me.Timer1 = New System.Windows.Forms.Timer(Me.ruponents)
       Me.ProgressBar1 = New System.Windows.Forms.ProgressBar
       Me.SuspendLayout()
       "
       "Button1
       "
       Me.Button1.Location = New System.Drawing.Point(104, 144)
       Me.Button1.Name = "Button1"
       Me.Button1.TabIndex = 1
       Me.Button1.Text = "Go"
       "
       "Timer1
       "
       "
       "ProgressBar1
       "
       Me.ProgressBar1.Location = New System.Drawing.Point(56, 72)
       Me.ProgressBar1.Name = "ProgressBar1"
       Me.ProgressBar1.Size = New System.Drawing.Size(168, 23)
       Me.ProgressBar1.TabIndex = 2
       "
       "Form1
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 273)
       Me.Controls.Add(Me.ProgressBar1)
       Me.Controls.Add(Me.Button1)
       Me.Name = "Form1"
       Me.Text = "Form1"
       Me.ResumeLayout(False)
   End Sub

1. End Region

   Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
       If ProgressBar1.Value <= ProgressBar1.Maximum - 1 Then
           ProgressBar1.Value += 1
       Else
           Timer1.Enabled = False
       End If
   End Sub
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Timer1.Enabled = True
   End Sub

End Class</source>