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OnPropertyChanged

Printed From: IdeaBlade
Category: DevForce
Forum Name: DevForce 2010
Forum Discription: For .NET 4.0
URL: http://www.ideablade.com/forum/forum_posts.asp?TID=3535
Printed Date: 28-Mar-2025 at 12:58pm


Topic: OnPropertyChanged
Posted By: rbautistaole
Subject: OnPropertyChanged
Date Posted: 12-Jul-2012 at 4:19pm
I have a codefirst model. I need to set a property value when another property is changed. Since with codeFirst style the PostSharp decorate my entity, Why is not a OnPropertyChanged created in my entity? Which is the suggested way to business rules on property changes? Using property interceptors?
 
thanks
 


Replies:
Posted By: sbelini
Date Posted: 13-Jul-2012 at 2:53pm
Hi,
 
You should override IPropertyChangedInterceptor as described at http://drc.ideablade.com/xwiki/bin/view/Documentation/code-first-entity-interfaces#HIPropertyChangedInterceptor - http://drc.ideablade.com/xwiki/bin/view/Documentation/code-first-entity-interfaces#HIPropertyChangedInterceptor .
 
Regards,
   Silvio.

Posted By: rbautistaole
Date Posted: 13-Jul-2012 at 6:25pm
ok, but by make this suggestion im replacing the total implementation and i can´t call the injected implementation.
 
Do you see some problem by use an interceptor? i remember tha i read an article from devforce discouraging the use of interceptors in such case.
 
regards.
 
 
 

Posted By: sbelini
Date Posted: 16-Jul-2012 at 2:40pm
I'm not sure what you mean by "can't call the injected implementation".
 
In Code First, this is the only way you can implement your OnPropertyChanged event.
 
Regards,
   Silvio.


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