Entity Framework 4: Access current datacontext in partial entity class

Question

I want to extend an EF entity in a partial class with methods and properties. I\'ve done this quite often. But now I would need to combine data from this entity with data fr

Answer 1

Even though it is not recommended, and I myself don't use it (as Ladislav stated: bad design), I stumbled upon a solution:

http://blogs.msdn.com/b/alexj/archive/2009/06/08/tip-24-how-to-get-the-objectcontext-from-an-entity.aspx

Extension Method:

public static ObjectContext GetContext( 
   this IEntityWithRelationships entity 
) 
{ 
    if (entity == null)  
       throw new ArgumentNullException("entity"); 

    var relationshipManager = entity.RelationshipManager; 

    var relatedEnd = relationshipManager.GetAllRelatedEnds() 
                                        .FirstOrDefault(); 

    if (relatedEnd == null)  
       throw new Exception("No relationships found"); 

    var query = relatedEnd.CreateSourceQuery() as ObjectQuery; 

    if (query == null)  
       throw new Exception("The Entity is Detached"); 

    return query.Context; 
}

within the entity

var myContext = this.GetContext() as MyEntities;