What are the downsides to turning off ProxyCreationEnabled for CTP5 of EF code first

c# entity-framework wcf serialization proxy-classes
Ralph Shillington picture Ralph Shillington · Jan 4, 2011 · Viewed 49.4k times · Source

The only way that my WCF service can return classes from a code first model is by setting the ProxyCreationEnable to false using the code below.

((IObjectContextAdapter)MyDb).ObjectContext.ContextOptions.ProxyCreationEnable = false;

What are the negative consequences of doing this? One gain is that I can at least get these dynamic types serialized so they can be sent over the wire using WCF.

Answer

Aleksey Timkov picture Aleksey Timkov · Nov 8, 2013

If DbContext.Configuration.ProxyCreationEnabled is set to false, DbContext will not load child objects for some parent object unless Include method is called on parent object. Setting DbContext.Configuration.LazyLoadingEnabled to true or false will have no impact on its behaviours.

If DbContext.Configuration.ProxyCreationEnabled is set to true, child objects will be loaded automatically, and DbContext.Configuration.LazyLoadingEnabled value will control when child objects are loaded.

Related questions

How do I solve The Entity Framework provider exception

I have published my WCF project onto a server, i have also published an MVC application onto the same box which consumes the WCF services. When trying login on my MVC application, this uses a wcf service, but i get …

Read More
Sequence contains no matching element - EntityFramework

I'm using EF 6.1.0 and was creating a WCF Service. First I created a Class Library containing my entities, Mappers and Context for initializing EF. I've also created a class containing an instantiation of the context and have this code: public …

Read More
Mapping object type property to varbinary(MAX) in Entity Framework

I have a situation where I have a type with a property of type object, eg. public class MyType { public virtual object MyProp{get; get;} } This type will have to be: Saved using Entity Framework to a database, as a …

Read More