http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce Classic : Updating nullEntity with 2 level nested binding Wed, 15 Apr 2026 10:57:50 -700 Thu, 05 Jul 2007 07:09:43 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=107 http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ http://www.ideablade.com/forum/forum_posts.asp?TID=107&PID=234#234 Author: Dominique
Subject: 107
Posted: 05-Jul-2007 at 7:09am

Hi,
I have the following entities:
a Person lives in a City
a City is in a Country
the UI is set up with databinding and nested properties

On the UI the user can choose a country and a city from 2 combos. Choosing a country will fill the list of cities with the right elements.
The normal way of choosing a city will be to choose first the country and then the city

A Person might have no city associeted with him and then it will be a problem if the user choose a country from the combo. I get a "updating nullEntity exception" (or alike).
Do you have a solution to work around that while still using databinding? (beside putting the "nothing" elements in the DB)


Dominique

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