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Instantianting the entity model
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BillG View Drop Down
DevForce MVP
DevForce MVP
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Joined: 05-Dec-2007
Location: Monroe, MI
Posts: 233 		Post Options Post Options   Quote BillG Quote  Post ReplyReply Direct Link To This Post Topic: Instantianting the entity model
    Posted: 16-Sep-2010 at 9:57am
In your samples for Silverlight, you show in the ViewModel class that you do the following
 
mgr = new NorthWindEntities();
 
I don't really want to do that in everyone of my ViewModel classes do I? Won't that hurt performance? Should I create a singleton class for this purpose or does it matter?
 
Bill
 
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davidklitzke View Drop Down
IdeaBlade
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Joined: 14-Jun-2007
Posts: 715 		Post Options Post Options   Quote davidklitzke Quote  Post ReplyReply Direct Link To This Post Posted: 16-Sep-2010 at 11:47am
You probably don't want to create multiple EntityManagers in your application.  You probably want just one.  You could create a singleton class to do this.  If you do want to use multiple EntityManagers, consult the DevForce Resource Center.

http://drc.ideablade.com/xwiki/bin/view/Documentation/EntityCaching
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