c# - Entity Framework: Two foreign keys connected by one collection -

i know there related topic: two foreign keys same table, can't find there fix problem. pretty new ef.

i have following model classes (code-first):

public class member {     [key]     public int memberid { get; set; }     public string name {get; set;}     public string surname { get; set; }      public virtual icollection<marriage> marriages { get; set; } }  public class marriage {     [key]     public int marriageid { get; set; }     public string marriageplace { get; set; }     public datetime marriagedate { get; set; }      [foreignkey("husband")]     public int husbandid { get; set; }     [foreignkey("wife")]     public int wifeid { get; set; }      public virtual member husband { get; set; }     public virtual member wife { get; set; } } 

my problem both husband , wife should connected same marriage collection in member class. did that:

    modelbuilder.entity<marriage>()         .hasrequired<member>(m => m.husband)         .withmany(m => m.marriages)         .hasforeignkey(m => m.husbandid)         .willcascadeondelete(false); 

and husband connected merriages collection. breaks when i'm trying add same thing wife property:

    modelbuilder.entity<marriage>()         .hasrequired<member>(m => m.wife)         .withmany(m => m.marriages)         .hasforeignkey(m => m.wifeid)         .willcascadeondelete(false); 

and getting error:

error 1 schema specified not valid. errors: relationship 'familytree.models.marriage_husband' not loaded because type 'familytree.models.member' not available. c:\users\sumiteru\documents\visual studio 2013\projects\familytree\familytree\app.xaml 9 21 familytree

that error occurs becouse ef didn't know navigation property must use. in onmodelbuliding method setting member's foreign key marriages twice, ef confused navigation property should use when populating marriages , throws exception.

there's topic on ef codeplex forum, user named 'moozzyk' explains ef behavior more (in comment): link.

as solution, should collection navigation property in member class , map wife's or husbend's foreign key it. can find same solution on anwser: link.