VB.Net by API/System.Windows.Forms/ProgressBar
Содержание
ProgressBar.Maximum
<source lang="vbnet">
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
</source>
ProgressBar.Minimum
<source lang="vbnet">
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
</source>
ProgressBar.PerformStep()
<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>
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>
