Print Page | Close Window

Verifier Engine Throws Invalid argument exception

Printed From: IdeaBlade
Category: DevForce
Forum Name: DevForce 2009
Forum Discription: For .NET 3.5
URL: http://www.ideablade.com/forum/forum_posts.asp?TID=1580
Printed Date: 06-Apr-2025 at 5:24pm


Topic: Verifier Engine Throws Invalid argument exception
Posted By: rutav
Subject: Verifier Engine Throws Invalid argument exception
Date 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


Replies:
Posted By: davidklitzke
Date 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.


Print Page | Close Window