[RESOLVED] Form hangs under Vista 64 bits

[yaeko]

Hi:

I have detected a problem running my application under Vista 64 bits OS.

My application is developed using VB.NT 2008 and compiled as x86

I have a main form. In this form there is an option to open other form. TThis second form must return a few values to the main form. When the user click on this 2nd form, to return values, this form hangs up (2nd form hangs up)

But for what I could have known, it continues executing the rest of code that exists after to open form. I want to say that the form dialog (2nd form) is not closed (hangs up) but it the code continues being executed, because I have seen that inserts the data in the database.

The application not returns any error and any exception.

frmWaiting (form displayed when call thread)

This forms contains progressbar

main form

 Dim ThreadVentas As System.Threading.Thread

 Private Sub ClosePb()
        Try
            If Me.InvokeRequired Then
                Me.Invoke(New ClosePbDelegate(AddressOf ClosePb))
            Else
                If Not frmPb Is Nothing Then
                    frmPb.Close()
                    frmPb = Nothing
                End If
                Me.loadData(condicio, condicio2)
            End If
        Catch ex As Exception

        End Try
    End Sub

Private Sub btGenDocVtas_ItemClick(ByVal sender As System.Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs)
       Try
            ThreadVentas = New System.Threading.Thread(AddressOf savedata)
            ThreadVentas.Start()
            frmPb = New frmWaiting
            frmPb.ShowDialog()
            Me.cmbBase.Focus()
        Catch ex As Exception
            gSaveError(Me.Name, ex.ToString)
        End Try
    End Sub

private sub SaveData()

 Dim f As New frmxxxx
    Try
      If f.ShowDialog = Windows.Forms.DialogResult.OK Then
        serie = f.f_serie
        doc = f.fdoc      
      Else
        If Not f Is Nothing Then
          f.Dispose()
          f = Nothing
        End If
        Exit Sub
      End If
    Catch ex As Exception    
      gSaveError(Me.Name, ex.ToString)
    Finally
      If Not f Is Nothing Then
        f.Dispose()
        f = Nothing
      End If
    End Try
'From here there are code to insert data in the database
......
.....

End Sub

frmXXXX (2nd form)

Dim dtseries As DataTable
-------

  Public ReadOnly Property fserie() As String
    Get
      Return Me.cmbDocVtas.SelectedItem
    End Get
  End Property
  Public ReadOnly Property fdoc() As Boolean
    Get
      Return Me.chkAp.Checked
    End Get
  End Property


Private Sub frmXXXX_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
 Me.dtseries = Nothing
End Sub

Private Sub btOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btOk.Click
   Me.DialogResult = DialogResult.OK
End Sub

There is something that and it works differently in systems of 64 bits? There is incorrect code? on other computers it works well,


Regards

[techgnome]

have you tried setting breakpoints and stepping through the code to see where it's going and what it's doing?

-tg

[formlesstree4]

Are you making any Cross Thread calls? Like, is SaveData() being called on a thread that's not the UI thread?

[yaeko]

have you tried setting breakpoints and stepping through the code to see where it's going and what it's doing?

-tg

this ocurrens on PC's customer. I can not install VS there

but i control exceptions and not returns any error and any advice

Are you making any Cross Thread calls? Like, is SaveData() being called on a thread that's not the UI thread?

Yes.

I have updated my 1st post to show thread call. User click btGenDocVtas button to start process

But I am using similar threads and runs fine. Except this.

[yaeko]

I have found the problem following the comments of the user formlesstree4

The problem was thread.