c# - Entity Framework: attached objects with children -



c# - Entity Framework: attached objects with children -

as explained in topic if insert or update entity can utilize next approach:

if (myentity.id != 0) { context.myentities.attach(myentity); context.objectstatemanager.changeobjectstate(myentity, entitystate.modified); } else { context.myentities.addobject(myentity); } context.savechanges();

the problem in case myentity has kid related objects , hence when seek update (myentity.id != 0) receive next exception:

system.invalidoperationexception unhandled message=an object temporary entitykey value cannot attached object context.

if remove kid objects (comment out) myentity works..

does know how solve problem? how can update myentity , save kid objects? thanks!

edit:

here solution problem: stackoverflow.com/a/7969372/282649

c# entity-framework

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