Error when listbox items are too long

[Dennis]

I have a listbox that I fill with data from a stored proc. It's very
basic - the proc returns two columns, one is used for the
DataValueField of the listbox and the other is the DataTextField. The
problem I have is when there is data returned for the DataTextField
that is over a certain length (somwhere around 70 characters, I'm not
sure what the exact limit is), the page errors trying to fill the
listbox.

How can I make the listbox accept longer values? I've tried setting
the width but that doesn't make a difference.

 

[Dennis]

I determined that 69 characters are allowed and 70 characters causes
the error.