VB.Net by API/System.Windows.Forms/ProgressBar

ProgressBar.Maximum

  

Option Strict On
imports System
imports System.Drawing
imports System.Windows.Forms
public class ProgressBars : inherits Form
  dim pb as ProgressBar
  dim lbl as Label
  public sub New()
    Size = new Size(300,200)
    dim btn as new Button()
    btn.Parent = me
    btn.Text = "&Start"
    btn.Location = new Point(0,0)
    AddHandler btn.Click, AddressOf btn_OnClick
    lbl = new Label()
    lbl.Parent = me
    lbl.Size = new Size(100,23)
    lbl.Location = new Point(0,25)
    lbl.BorderStyle = BorderStyle.FixedSingle
    lbl.TextAlign = ContentAlignment.MiddleCenter
    lbl.Text = ""
    pb = new ProgressBar()
    pb.Parent = me
    pb.Location = new Point(0, 70)
    pb.Size = new Size(400, 20) 
    pb.Minimum = 0      "  the default value
    pb.Maximum = 100    "  the default value
  end sub  "  close for constructor
  private sub btn_OnClick(ByVal sender as object,ByVal e as EventArgs)
    dim cntr as integer = 0
    pb.Value = 0
    pb.Step = 1
    for i as integer = 0 to 100000
      cntr  = cntr + 1
      if cntr mod 100 = 0 then
        lbl.Text = cntr.ToString()
        pb.PerformStep()
        Application.DoEvents()
        System.Threading.Thread.Sleep(40)
      end if
    next
  end sub
  public shared sub Main() 
    Application.Run(new ProgressBars())
  end sub
end class

ProgressBar.Minimum

  

Option Strict On
imports System
imports System.Drawing
imports System.Windows.Forms
public class ProgressBars : inherits Form
  dim pb as ProgressBar
  dim lbl as Label
  public sub New()
    Size = new Size(300,200)
    dim btn as new Button()
    btn.Parent = me
    btn.Text = "&Start"
    btn.Location = new Point(0,0)
    AddHandler btn.Click, AddressOf btn_OnClick
    lbl = new Label()
    lbl.Parent = me
    lbl.Size = new Size(100,23)
    lbl.Location = new Point(0,25)
    lbl.BorderStyle = BorderStyle.FixedSingle
    lbl.TextAlign = ContentAlignment.MiddleCenter
    lbl.Text = ""
    pb = new ProgressBar()
    pb.Parent = me
    pb.Location = new Point(0, 70)
    pb.Size = new Size(400, 20) 
    pb.Minimum = 0      "  the default value
    pb.Maximum = 100    "  the default value
  end sub  "  close for constructor
  private sub btn_OnClick(ByVal sender as object,ByVal e as EventArgs)
    dim cntr as integer = 0
    pb.Value = 0
    pb.Step = 1
    for i as integer = 0 to 100000
      cntr  = cntr + 1
      if cntr mod 100 = 0 then
        lbl.Text = cntr.ToString()
        pb.PerformStep()
        Application.DoEvents()
        System.Threading.Thread.Sleep(40)
      end if
    next
  end sub
  public shared sub Main() 
    Application.Run(new ProgressBars())
  end sub
end class

ProgressBar.PerformStep()

  
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

ProgressBar.Value

  

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