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Verifier Engine Throws Invalid argument exception
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rutav View Drop Down
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Joined: 08-Dec-2009
Location: pune
Posts: 1 		Post Options Post Options   Quote rutav Quote  Post ReplyReply Direct Link To This Post Topic: Verifier Engine Throws Invalid argument exception
    Posted: 08-Dec-2009 at 10:50pm
While try to verify newly created record ,
i getting InvalidOperationException with following Mesage
"Collection was modified; enumeration operation may not execute."
 
Code :
 
IdeaBlade.Validation.VerifierEngine engine = this.VerifierEngine; ;
VerifierResultCollection result = engine.Execute(this);  --> Getting exception while calling Execute method
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davidklitzke View Drop Down
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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: 09-Dec-2009 at 10:25am
The error is occurring because the collection of entities to be verified is being modified while the Verfier Engine is iterating over the collection of entities.  Check your verification logic to see whether it is modifying any of the entities in the collection.  Check also to see whethether a PropertyChanged Event Handler is being called and whether that Event Handler is modifying any of the entities.
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