Operation could destabilize the runtime?

Question

I\'m having a little bit of trouble understanding what the problem is here. I have a bit of code that pulls records from a database using LINQ and puts them into an object

Answer 1

I came across this error with similar code;

IEnumerable records = (from t in db.Tables
                              where t.Id.Equals(1)
                              select t).ToList();
This seemingly harmless code was part of a UserControl method which was called from a Page. No problem in a .NET4 development environment, however, when the site was PreCompiled and deployed to the server on .NET3.5 I got this error.
I suspect this has something to do with the fact that the control was being compiled into a separate DLL combined with the security changes between the frameworks as described in this .NET security blog
My solution: run the live site on .NET4

                                                        

              
                
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