FileSystemWatch er - New Form Hanging

[Frederic H]

Hi,

I have a problem when I try to open a new form with the Changed event
(FileSystemWatc her) : the form hangs just after the paint. But I use the same
function (OpenFormPerfor m) to open a new form when I click on the Button1 and
it works fine. I think that it's a problem with thread or applicationCont ext.
I can use Application.Run (new Form) to put the new form in the message loop
but the application is suspended after the Application.Run () statement.

Thx for your help.

Public Class FrmPrinc
Inherits System.Windows. Forms.Form

#Region " Code généré par le Concepteur Windows Form "

Public Sub New()
MyBase.New()

'Cet appel est requis par le Concepteur Windows Form.
InitializeCompo nent()

'Ajoutez une initialisation quelconque après l'appel
InitializeCompo nent()

End Sub

'La méthode substituée Dispose du formulaire pour nettoyer la liste des
composants.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Disp ose()
End If
End If
MyBase.Dispose( disposing)
End Sub

'Requis par le Concepteur Windows Form
Private components As System.Componen tModel.IContain er

'REMARQUE : la procédure suivante est requise par le Concepteur Windows
Form
'Elle peut être modifiée en utilisant le Concepteur Windows Form.
'Ne la modifiez pas en utilisant l'éditeur de code.
Friend WithEvents Button1 As System.Windows. Forms.Button
<System.Diagnos tics.DebuggerSt epThrough()> Private Sub
InitializeCompo nent()
Me.Button1 = New System.Windows. Forms.Button
Me.SuspendLayou t()
'
'Button1
'
Me.Button1.Loca tion = New System.Drawing. Point(24, 32)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing. Size(88, 48)
Me.Button1.TabI ndex = 0
Me.Button1.Text = "Button1"
'
'FrmPrinc
'
Me.AutoScaleBas eSize = New System.Drawing. Size(5, 13)
Me.ClientSize = New System.Drawing. Size(292, 266)
Me.Controls.Add (Me.Button1)
Me.Name = "FrmPrinc"
Me.Text = "FrmPrinc"
Me.ResumeLayout (False)

End Sub

#End Region

Private WithEvents FSW As System.IO.FileS ystemWatcher
Private Delegate Sub OpenForm()

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
OpenFormPerform ()
End Sub

Private Sub FrmPrinc_Load(B yVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.Load
FSW = New System.IO.FileS ystemWatcher
FSW.Path = Environment.Get EnvironmentVari able("USERPROFI LE")
FSW.NotifyFilte r = IO.NotifyFilter s.CreationTime Or
IO.NotifyFilter s.DirectoryName Or IO.NotifyFilter s.FileName Or
IO.NotifyFilter s.LastWrite
FSW.Filter = "BrowserIN. TXT"
FSW.EnableRaisi ngEvents = True
End Sub

Private Sub OpenFormPerform ()
Dim myForm As New Form
myForm.Controls .Add(New TextBox)
myForm.Show()
MessageBox.Show ("OK")
End Sub

Private Sub FSW_Changed(ByV al sender As Object, ByVal e As
System.IO.FileS ystemEventArgs) Handles FSW.Changed
OpenFormPerform ()
End Sub

End Class

[Frederic H]

Any idea ?

"Frederic H" a écrit :

Hi,

I have a problem when I try to open a new form with the Changed event
(FileSystemWatc her) : the form hangs just after the paint. But I use the same
function (OpenFormPerfor m) to open a new form when I click on the Button1 and
it works fine. I think that it's a problem with thread or applicationCont ext.
I can use Application.Run (new Form) to put the new form in the message loop
but the application is suspended after the Application.Run () statement.

Thx for your help.

Public Class FrmPrinc
Inherits System.Windows. Forms.Form

#Region " Code généré par le Concepteur Windows Form "

Public Sub New()
MyBase.New()

'Cet appel est requis par le Concepteur Windows Form.
InitializeCompo nent()

'Ajoutez une initialisation quelconque après l'appel
InitializeCompo nent()

End Sub

'La méthode substituée Dispose du formulaire pour nettoyer la liste des
composants.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Disp ose()
End If
End If
MyBase.Dispose( disposing)
End Sub

'Requis par le Concepteur Windows Form
Private components As System.Componen tModel.IContain er

'REMARQUE : la procédure suivante est requise par le Concepteur Windows
Form
'Elle peut être modifiée en utilisant le Concepteur Windows Form.
'Ne la modifiez pas en utilisant l'éditeur de code.
Friend WithEvents Button1 As System.Windows. Forms.Button
<System.Diagnos tics.DebuggerSt epThrough()> Private Sub
InitializeCompo nent()
Me.Button1 = New System.Windows. Forms.Button
Me.SuspendLayou t()
'
'Button1
'
Me.Button1.Loca tion = New System.Drawing. Point(24, 32)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing. Size(88, 48)
Me.Button1.TabI ndex = 0
Me.Button1.Text = "Button1"
'
'FrmPrinc
'
Me.AutoScaleBas eSize = New System.Drawing. Size(5, 13)
Me.ClientSize = New System.Drawing. Size(292, 266)
Me.Controls.Add (Me.Button1)
Me.Name = "FrmPrinc"
Me.Text = "FrmPrinc"
Me.ResumeLayout (False)

End Sub

#End Region

Private WithEvents FSW As System.IO.FileS ystemWatcher
Private Delegate Sub OpenForm()

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
OpenFormPerform ()
End Sub

Private Sub FrmPrinc_Load(B yVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.Load
FSW = New System.IO.FileS ystemWatcher
FSW.Path = Environment.Get EnvironmentVari able("USERPROFI LE")
FSW.NotifyFilte r = IO.NotifyFilter s.CreationTime Or
IO.NotifyFilter s.DirectoryName Or IO.NotifyFilter s.FileName Or
IO.NotifyFilter s.LastWrite
FSW.Filter = "BrowserIN. TXT"
FSW.EnableRaisi ngEvents = True
End Sub

Private Sub OpenFormPerform ()
Dim myForm As New Form
myForm.Controls .Add(New TextBox)
myForm.Show()
MessageBox.Show ("OK")
End Sub

Private Sub FSW_Changed(ByV al sender As Object, ByVal e As
System.IO.FileS ystemEventArgs) Handles FSW.Changed
OpenFormPerform ()
End Sub

End Class