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POHow do I setup two one-to-many relationships in entity framework?
 

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  1. POHow do I setup two one-to-many relationships in entity framework?
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    <p>Let's say we're using an entity framework code-first approach, and we have two objects that are linked with two one-to-many relationships (one <code>Person</code> can own many <code>Car</code>s, but each car has an owner AND a 'main driver'). Here are the two entities:</p> <pre><code>public class Person { #region Persisted fields [Required] public int PersonId { get; set; } [Required] public string FirstName { get; set; } [Required] public string Surname { get; set; } #endregion #region Navigation properties public virtual ICollection&lt;Car&gt; CarsOwned { get; set; } #endregion } public class Car { #region Persisted fields [Required] public int CarId { get; set; } [Required] public string Make { get; set; } [Required] public string Manufacturer { get; set; } [Required] public string RegNo { get; set; } [Required] [ForeignKey("Owner")] public int OwnerId { get; set; } [Required] [ForeignKey("MainDriver")] public int MainDriverId { get; set; } #endregion #region Navigation properties public virtual Person Owner { get; set; } public virtual Person MainDriver { get; set; } #endregion } </code></pre> <p>How can I tell entity framework which of the two foreign keys (<code>OwnerId</code> or <code>MainDriverId</code>) should be used to determine the <code>CarsOwned</code> collection? I just tried auto-creating a database with these two entities, and it assumed that I wanted to use <code>MainDriverId</code> as the <code>CarsOwned</code> foreign key for some reason, when obviously I want to use the <code>OwnerId</code> foreign key.</p>
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    1. USJez
    1. USJez
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      1. POHow do I setup two one-to-many relationships in entity framework?
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      1. VTUpMod
    1. COThis is not a 2-to-many, you have 2 1-to-many relations.
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      1. POHow do I setup two one-to-many relationships in entity framework?
      1. USHenk Holterman
    2. COOK, fair enough, I'll change to that terminology.
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      1. USJez
 

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