[RESOLVED] [2005] Value Close() cannot be called while doing CreateHandle()

my database table creation works. now i have added a form with a progress bar when this is going through and now get an error when trying to close the form after the sql file has been successfully deleted.

Quote:

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------------------------------Start Of Error------------------------------
Error Occurred On:
5/3/2008 12:31:40 PM

Data:
System.Collections.ListDictionaryInternal

Message:
Value Close() cannot be called while doing CreateHandle().

Stack Trace:
at System.Windows.Forms.Form.Close()
at BusinessStudio.frmSQLExecuteProgress.frmSQLExecuteProgress_Load(Object sender, EventArgs e) in D:\BusinessStudio\frmSQLExecuteProgress.vb:line 36
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
------------------------------ End Of Error ------------------------------

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vb Code:

Public Class frmSQLExecuteProgress
    Private Sub frmSQLExecuteProgress_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'form layout
        FormLayout(Me)
 
        'specify the location of the dbu file
        Dim strFileLocation As String = My.Application.Info.DirectoryPath & "\sql\sql.dbu"
 
        With (My.Computer.FileSystem)
            'lets see if the file exists
            If System.IO.File.Exists(strFileLocation) Then
                'read all the lines in the file
                Dim arrDBULineCount() As String = IO.File.ReadAllLines(strFileLocation)
 
                With prgDatabaseExecution
                    'set the minimum to 0%
                    .Minimum = 0
                    'set the maximum to 100%
                    .Maximum = 100
                    'give step the value of the number of lines in the dbu file
                    .Step = CInt(arrDBULineCount.Length.ToString)
                    'get the incremental by dividing the line count by 100
                    .Value = CInt(.Step / .Maximum)
                    'start the progress bar
                    .PerformStep()
 
                    If .Value = 100 Then
                        'now that the request has been completed, delete the file
                        IO.File.Delete(strFileLocation)
                        'close this screen
                    End If
                End With
            End If
        End With
 
        Me.Close()
    End Sub
End Class

been working at this for a few hours and not sure what to do

You're calling Close on a form in its Load event handler. That's a no-no. Why would you do that? If you don't want the form open then why show it in the first place?

Quote:

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Originally Posted by jmcilhinney

You're calling Close on a form in its Load event handler. That's a no-no. Why would you do that? If you don't want the form open then why show it in the first place?

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oh my, i didnt even notice that! thanks jc

ok, added a button and using that to close the form. not thinking straight today it looks like :)