Imports System.Windows.Forms
Public Class Form1
Inherits System.Windows.Forms.Form
Friend WithEvents button4 As System.Windows.Forms.Button
Friend WithEvents button3 As System.Windows.Forms.Button
Friend WithEvents button2 As System.Windows.Forms.Button
Friend WithEvents button1 As System.Windows.Forms.Button
Public Sub New()
MyBase.New()
Me.button4 = New System.Windows.Forms.Button()
Me.button3 = New System.Windows.Forms.Button()
Me.button2 = New System.Windows.Forms.Button()
Me.button1 = New System.Windows.Forms.Button()
Me.SuspendLayout()
'
Me.button4.Location = New System.Drawing.Point(24, 127)
Me.button4.Name = "button4"
Me.button4.Size = New System.Drawing.Size(144, 23)
Me.button4.TabIndex = 7
Me.button4.Text = "Show MessageBox"
'
Me.button3.Location = New System.Drawing.Point(24, 90)
Me.button3.Name = "button3"
Me.button3.Size = New System.Drawing.Size(144, 23)
Me.button3.TabIndex = 6
Me.button3.Text = "Throw Exception"
'
Me.button2.Location = New System.Drawing.Point(24, 53)
Me.button2.Name = "button2"
Me.button2.Size = New System.Drawing.Size(144, 23)
Me.button2.TabIndex = 5
Me.button2.Text = "Application.ExitThread"
'
Me.button1.Location = New System.Drawing.Point(24, 16)
Me.button1.Name = "button1"
Me.button1.Size = New System.Drawing.Size(144, 23)
Me.button1.TabIndex = 4
Me.button1.Text = "Application.Exit"
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(192, 166)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.button4, Me.button3, Me.button2, Me.button1})
Me.ResumeLayout(False)
End Sub
Shared Sub App_Exit(ByVal sender As Object, ByVal e As EventArgs)
System.Diagnostics.Debug.WriteLine("App_Exit")
End Sub
Shared Sub App_Idle(ByVal sender As Object, ByVal e As EventArgs)
System.Diagnostics.Debug.WriteLine("App_Idle")
End Sub
Shared Sub App_ThreadingException(ByVal sender As Object, ByVal e As System.Threading.ThreadExceptionEventArgs)
System.Diagnostics.Debug.WriteLine("App_ThreadException")
Dim msg As String = "A problem has occurred in this application." & vbCrLf & vbCrLf & _
vbTab & e.Exception.Message & vbCrLf & vbCrLf & _
"Would you like to continue the application so that " & vbCrLf & _
"you can save your work?"
Dim res As DialogResult = MessageBox.Show(msg, "Unexpected Error", MessageBoxButtons.YesNo)
If res = System.Windows.Forms.DialogResult.Yes Then Exit Sub
Application.Exit()
End Sub
Shared Sub DumpThreadID(ByVal name As String)
System.Diagnostics.Debug.WriteLine(name & " thread id= " & System.AppDomain.GetCurrentThreadId().ToString())
End Sub
Shared Sub DummyThreadStart()
DumpThreadID("Dummy Thread")
AddHandler Application.ThreadExit, New EventHandler(AddressOf App_ThreadExit)
End Sub
Shared Sub Main()
AddHandler Application.ThreadException, New System.Threading.ThreadExceptionEventHandler(AddressOf App_ThreadingException)
AddHandler Application.Idle, New EventHandler(AddressOf App_Idle)
AddHandler Application.ThreadExit, New EventHandler(AddressOf App_ThreadExit)
AddHandler Application.ApplicationExit, New EventHandler(AddressOf App_Exit)
DumpThreadID("UI Thread")
Dim dummythread As System.Threading.Thread = New System.Threading.Thread(New System.Threading.ThreadStart(AddressOf DummyThreadStart))
dummythread.Start()
Application.Run(New Form1())
End Sub
Shared Sub App_ThreadExit(ByVal sender As Object, ByVal e As EventArgs)
System.Diagnostics.Debug.WriteLine("App_ThreadExit on thread id= " & System.AppDomain.GetCurrentThreadId().ToString())
End Sub
Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click
Application.Exit()
End Sub
Private Sub button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button2.Click
Application.ExitThread()
End Sub
Private Sub button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button3.Click
Throw New System.IO.FileLoadException()
End Sub
End Class
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