Long Operation with Timer and Wait Cursor
Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.IO
Public Class MainClass
Shared Sub Main(ByVal args As String())
Dim myform As New Form1()
Application.Run(myform)
End Sub
End Class
Public Class Form1
Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
Me.Cursor = Cursors.WaitCursor
tmrLongTask.Enabled = True
btnGo.Enabled = False
' refresh everything.
Application.DoEvents()
End Sub
Private Sub tmrLongTask_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrLongTask.Tick
tmrLongTask.Enabled = False
Me.Cursor = Cursors.Default
btnGo.Enabled = True
End Sub
End Class
<Global.Microsoft.VisualBasic.CompilerServices.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.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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container
Me.btnGo = New System.Windows.Forms.Button
Me.tmrLongTask = New System.Windows.Forms.Timer(Me.components)
Me.SuspendLayout()
'
'btnGo
'
Me.btnGo.Location = New System.Drawing.Point(16, 16)
Me.btnGo.Name = "btnGo"
Me.btnGo.Size = New System.Drawing.Size(180, 23)
Me.btnGo.TabIndex = 0
Me.btnGo.Text = "Start Waiting for 3 Seconds"
'
'tmrLongTask
'
Me.tmrLongTask.Interval = 3000
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.btnGo)
Me.Name = "Form1"
Me.Text = "UseWaitCursor"
Me.ResumeLayout(False)
End Sub
Friend WithEvents btnGo As System.Windows.Forms.Button
Friend WithEvents tmrLongTask As System.Windows.Forms.Timer
End Class
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