VB.Net/GUI/Progress Bar
Prograss Bar Demo
<source lang="vbnet"> Imports System.Windows.Forms Imports System.IO
Module Module1
Sub Main() Application.Run(New Form1) End Sub
End Module
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.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 ProgressBar1 As System.Windows.Forms.ProgressBar Friend WithEvents Button1 As System.Windows.Forms.Button Friend WithEvents StatusBar1 As System.Windows.Forms.StatusBar <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.ProgressBar1 = New System.Windows.Forms.ProgressBar() Me.Button1 = New System.Windows.Forms.Button() Me.StatusBar1 = New System.Windows.Forms.StatusBar() Me.SuspendLayout() " "ProgressBar1 " Me.ProgressBar1.Location = New System.Drawing.Point(24, 160) Me.ProgressBar1.Name = "ProgressBar1" Me.ProgressBar1.Size = New System.Drawing.Size(408, 23) Me.ProgressBar1.TabIndex = 3 " "Button1 " Me.Button1.Location = New System.Drawing.Point(328, 32) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(112, 23) Me.Button1.TabIndex = 4 Me.Button1.Text = "Calculate" " "StatusBar1 " Me.StatusBar1.Location = New System.Drawing.Point(0, 207) Me.StatusBar1.Name = "StatusBar1" Me.StatusBar1.Size = New System.Drawing.Size(456, 22) Me.StatusBar1.TabIndex = 5 " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(456, 229) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.StatusBar1, Me.Button1, Me.ProgressBar1}) Me.Name = "Form1" Me.Text = "UseProgressBar" Me.ResumeLayout(False) End Sub
- End Region
Function Factorial(ByVal Value As Double) As Double If (Value = 0) Then Factorial = 1.0 System.Threading.Thread.Sleep(3000) Else Factorial = Value * Factorial(Math.Ceiling(Value - 1)) End If End Function Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click StatusBar1.Text = "Calculating Factorial(10)" Factorial(10) ProgressBar1.Value = 33 StatusBar1.Text = "Calculating Factorial(20)" Factorial(20) ProgressBar1.Value = 66 StatusBar1.Text = "Calculating Factorial(30)" Factorial(30) ProgressBar1.Value = 100 StatusBar1.Text = "Done" End Sub
End Class
</source>
ProgressBar control
<source lang="vbnet"> Imports System Imports System.Collections Imports System.Data Imports System.Drawing Imports System.Windows.Forms Imports System.ruponentModel Imports System.Drawing.Drawing2D Imports System.IO Public Class MainClass
Shared Sub Main() Dim form1 As Form = New Form1 Application.Run(form1)
End Sub
End Class
Public Class Progress
Inherits System.Windows.Forms.UserControl
- 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 "UserControl 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 Bar As System.Windows.Forms.ProgressBar Friend WithEvents lblProgress As System.Windows.Forms.Label <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.Bar = New System.Windows.Forms.ProgressBar() Me.lblProgress = New System.Windows.Forms.Label() Me.SuspendLayout() " "Bar " Me.Bar.Anchor = ((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _ Or System.Windows.Forms.AnchorStyles.Right) Me.Bar.Location = New System.Drawing.Point(4, 8) Me.Bar.Name = "Bar" Me.Bar.Size = New System.Drawing.Size(154, 32) Me.Bar.TabIndex = 0 " "lblProgress " Me.lblProgress.Anchor = ((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _ Or System.Windows.Forms.AnchorStyles.Right) Me.lblProgress.Location = New System.Drawing.Point(4, 48) Me.lblProgress.Name = "lblProgress" Me.lblProgress.Size = New System.Drawing.Size(152, 16) Me.lblProgress.TabIndex = 1 Me.lblProgress.Text = "0% Done" Me.lblProgress.TextAlign = System.Drawing.ContentAlignment.TopCenter " "Progress " Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lblProgress, Me.Bar}) Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.Name = "Progress" Me.Size = New System.Drawing.Size(164, 68) Me.ResumeLayout(False) End Sub
- End Region
Property Value() As Integer Get Return Bar.Value End Get Set(ByVal Value As Integer) Bar.Value = Value UpdateLabel() End Set End Property Property Maximum() As Integer Get Return Bar.Maximum End Get Set(ByVal Value As Integer) Bar.Maximum = Value End Set End Property Property [Step]() As Integer Get Return Bar.Step End Get Set(ByVal Value As Integer) Bar.Step = Value End Set End Property Public Sub PerformStep() Bar.PerformStep() UpdateLabel() End Sub Private Sub UpdateLabel() lblProgress.Text = ((Bar.Value * 100) \ Bar.Maximum).ToString() & "% Done" 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.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 Status As Progress Friend WithEvents cmdStart As System.Windows.Forms.Button Friend WithEvents tmrIncrementBar As System.Windows.Forms.Timer <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.ruponents = New System.ruponentModel.Container() Me.Status = New Progress() Me.cmdStart = New System.Windows.Forms.Button() Me.tmrIncrementBar = New System.Windows.Forms.Timer(Me.ruponents) Me.SuspendLayout() " "Status " Me.Status.Anchor = ((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _ Or System.Windows.Forms.AnchorStyles.Right) Me.Status.BackColor = System.Drawing.SystemColors.Control Me.Status.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.Status.Location = New System.Drawing.Point(4, 16) Me.Status.Maximum = 100 Me.Status.Name = "Status" Me.Status.Size = New System.Drawing.Size(284, 88) Me.Status.Step = 10 Me.Status.TabIndex = 0 Me.Status.Value = 0 " "cmdStart " Me.cmdStart.FlatStyle = System.Windows.Forms.FlatStyle.System Me.cmdStart.Location = New System.Drawing.Point(92, 140) Me.cmdStart.Name = "cmdStart" Me.cmdStart.Size = New System.Drawing.Size(108, 24) Me.cmdStart.TabIndex = 1 Me.cmdStart.Text = "Start" " "tmrIncrementBar " Me.tmrIncrementBar.Interval = 1000 " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 14) Me.ClientSize = New System.Drawing.Size(292, 174) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.cmdStart, Me.Status}) Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.Name = "Form1" Me.Text = "Progress Host" Me.ResumeLayout(False) End Sub
- End Region
Private Sub tmrIncrementBar_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrIncrementBar.Tick Status.PerformStep() If Status.Maximum = Status.Value Then tmrIncrementBar.Enabled = False End Sub Private Sub cmdStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdStart.Click tmrIncrementBar.Enabled = False Status.Value = 0 Status.Maximum = 20 Status.Step = 1 tmrIncrementBar.Enabled = True End Sub
End Class
</source>
Progress Bar Demo: set Value and Step
<source lang="vbnet"> Imports System Imports System.Data Imports System.Windows.Forms Imports System.Drawing Imports System.Diagnostics Imports System.Drawing.Printing Public Class MainClass
Shared Sub Main() Dim form1 As Form = New Form1 Application.Run(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>