Bug with combobox ?

's Computer Specifications

I have a combo box and I set its DataSource property to an ArrayList whose
first item is null.

this combobox is in a panel wich is added/removed to a main form.

If I set the DataSource before showing the the panel there is a
ArgumentNullException which is thrown when I add the PANEL to the main form.
I had trouble understand why.

what's more puzzling, if I set the DataSource after the the panel is added
is displayed, I have no ArgumentNullException ...

's Computer Specifications

could you please include some sample code.

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