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Updating nullEntity with 2 level nested binding Printed From: IdeaBlade Category: DevForce Forum Name: DevForce Classic Forum Discription: For .NET 2.0 URL: http://www.ideablade.com/forum/forum_posts.asp?TID=107 Printed Date: 16-Sep-2025 at 12:49am Topic: Updating nullEntity with 2 level nested binding Posted By: Dominique Subject: Updating nullEntity with 2 level nested binding Date 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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