Re: showdialog and 'Cannot access a disposed object'

I think what I really want is to have the report object hold the type
of report form instead of a reference to the actual form object. I
want the button to create a new form each time of the type listed in
the list box/report object, and not reference existing objects.




On Jan 4, 2008 10:53 AM, Peter Ritchie
<[email protected]> wrote:
> On Fri, 4 Jan 2008 09:56:41 -0600, Mike Andrews
> <[email protected]> wrote:
>
> >The issue is that you're creating a new Report via this line:
> >
> >Dim rpt As New BaseReport
> >
> >and then destroying it and in place of it setting an existing one:
> >
> >rpt = DirectCast(Me.Reports.SelectedValue, BaseReport)
> >
> >since the list box contains the references to the report object, and
> you've
> >previously disposed it it will fail to run.
> >You need to refrain from calling the dispose() method until you're done
> with
> >the form in which the listbox resides.
> >You can then dispose all of the reports.
>
> Bingo, the Reports object should be responsible for disposing what it
> aggregates (or the owner of the Reports object if that class doesn't have
> that concept).
>