Datagrid refresh problem... well... kinda...


I am receiving an error telling me that i cannot open an already disposed form.

The strange thing is that the form (which is said to be disposed) is open.

The steps which lead to this error are:

1) Open Main Form
2) Open Form1
3) Close Form1
4) Open Form1
5) Open Form2 from Form1
6) Raise an event in Form1 from Form2

If I edit out the line which raises the event in Form1 - I do not get the error.

So what am I doing wrong with regards to raising the event???

Step 6) The code to raise event is:


Form1's Module code contains:

Public Event EditRecordInserted()
    Public Sub RaiseEditRecordInserted()
        RaiseEvent EditRecordInserted()
End Sub

Form1's load event has:

AddHandler Mod_Edit.EditRecordInserted, AddressOf HandleRecordInserted

And then there's the actual sub which is:

Public Sub HandleRecordInserted()
End Sub

Any help appreciated - thanks.

LVL 11
Ramesh SrinivasTechnical ConsultantAsked:
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It might be that your line:

AddHandler Mod_Edit.EditRecordInserted, AddressOf HandleRecordInserted

Is referring to the first instance of Form1 which you closed before opening the new instance.

Make that line execute every time you re-open the Form1.

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Ramesh SrinivasTechnical ConsultantAuthor Commented:
It should execute every time the form1 opens because it is in the form_load event.
Where do you assign value to Mod_Form1 ?
Ramesh SrinivasTechnical ConsultantAuthor Commented:
Seems that you were right I guess.

What I did was to put a RemoveHandler into the form1_Closing event.

Looks like its working now.


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