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NerdDinner Delete query

Posted By:      Posted Date: September 28, 2010    Points: 0   Category :ASP.Net
 
I have been reading this book (Professional.ASP.NET.MVC.2.Scott.Hanselman) to start using MVC, so far its going good an I am enjoying it very much. I have been following the steps described in the book to create the NerdDinner application.

I have a problem with the deleted method, the line the error is on is below and is in BOLD. Can somebody explain why I am getting this error and what is the cause and how can I prevent this from happening in the future.

 

public void Delete(Dinner dinner)
        {
            foreach (var rsvp in dinner.RSVPs)
            {
                entities.RSVPs.DeleteObject(dinner.RSVPs);
            }
            entities.Dinners.DeleteObject(dinner);
        }

 

 

Also have a look at the screen shot for a detailed error description.

http://www.


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