c# - DOT.NET System.Data.Entity.DbContext, mapping parent to child but not child to parent -

i'm using npgsql.entityframework , due aspects of implementation of xmlserializer want custom handling of mapping.

instead of standard method of mapping child parent (as parent) want child mapped using parent_id (as long).

i want keep function of adding child parent in model, want able handle child(s) without loading parent.

code in vb.net (answers c# or vb)

example parent add: dim p new parent p.child.add( new child )

example child add without parent loaded, parent id known, dim c new child c.parent_id= known_parent_id

any appreciated.

public class parent

private m_childs icollection(of child)  <runtime.serialization.datamember(), componentmodel.dataannotations.key>  public property id long  public overridable property childs() icollection(of child)             return m_childs     end         set(value icollection(of child))         m_childs = value     end set end property 

end class

public class child

<runtime.serialization.datamember(), componentmodel.dataannotations.key> public property id long  public property parent parent '  works not desired  public property parent_id long'   want use 

end class

/johan

found solution,using foreignkey in child mapping parent enabled use of both methods.

<system.componentmodel.dataannotations.schema.foreignkey("parent")> _ public property parent_id long <xml.serialization.xmlignore> _     public property parent parent