Problem implementing a Bound ComboBox in DataGrid (5.8)

[Rick Liebespach]

I downloaded the sample programs associated with FAQ 5.8 - Adding a ComboBox to the DataGrid

I have the unbound version working in my app, but I need to get the bound version working in my app.
It works in it's sample but in my app it gives the following message:
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An unhandled exception of type 'System.InvalidCastException' occurred in system.windows.forms.dll

Additional information: Cast from string "Note" to type 'Double' is not valid.
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Does anyone have any ideas what I did wrong?
I really need to get this workiing!

Thanks,
Rick

[Anonymous]

> I downloaded the sample programs associated with FAQ 5.8 - Adding a ComboBox to the DataGrid
>
> I have the unbound version working in my app, but I need to get the bound version working in my app.
> It works in it's sample but in my app it gives the following message:
> ------------------
> An unhandled exception of type 'System.InvalidCastException' occurred in system.windows.forms.dll
>
> Additional information: Cast from string "Note" to type 'Double' is not valid.
> ------------------
>
> Does anyone have any ideas what I did wrong?
> I really need to get this workiing!
>
> Thanks,
> Rick

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You may be having problems with a default value of DBnull. See this article http://support.microsoft.com/default.aspx?scid=kb;EN-US;318039