One framework to rule us all…
Entity Framework

How to duplicate Entity Framework objects

I’ve recently come across a problem that I thought it would be simple to solve by using Entity Framework. I wanted  to duplicate an object  to make things easier for me and, ultimately, to the user, but I guess my assumption was incorrect. After some tests with reflection, google searches and a lot or brainstorming I’ve reached the conclusion that in Entity Framework there isn’t a built-in or clear method that allows developers to clone objects and then persist the newly created object with some changes. 

You’ve probably tried to clear EntityKeysValue members and got the readonly exception right? – EntityKey values cannot be changed, once their value is set. Well, in this article I’ll show a way that I’ve found to be the simplest (thanks Patrick!).

It’s basically a serialization solution, and by that we all know it isn’t very performance-wise option, but it seems that, for now, it’s the simplest, and all we’ve got:

You can use this method by using the System.Runtime.Serialization namespace.

Digg This
Reddit This
Stumble Now!
Buzz This
Vote on DZone
Share on Facebook
Bookmark this on Delicious
Kick It on DotNetKicks.com
Shout it
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Leave a Reply