Question

I have table called Direccion other called Cliente each one defined like this

public class Direccion
{   
    public short IdDireccion { get; set; }
    public short IdCliente { get; set; }
    public string Descripcion{ get; set; }
    public virtual ICollection<Cliente> Cliente { get; set; }
}

public class Cliente
{
    public short IdCliente { get; set; }
    public string Descripcion { get; set; }
}

Now what I want to accomplish is a query with this output by generating an anonymous type

id            <----could be idCliente or idDireccion
Descripcion   <----could be the description of cliente or Direccion
idFK          <---- the id of direccion related with cliente

But I start to have trouble when I navigate from Direccion to Cliente because the relation gives me the collection and I don’t know how to make the expression to handle the collection to the type that I’m expecting which is Cliente

This is my failed attempt:

var x= (from d in Direccion
where d.Activo == true select d.Cliente).Select( x => new { x.IdCliente })

var x = (from d in db.Direccion
                     where d.Activo == true
                     select d).AsQueryable().Select(xx => new { d.IdCliente });

Answer 1

Try the SelectMany method:

var x = from d in db.Direccion
        where d.Activo == true
        from c in d.Cliente
        select new 
        { c.IdCliente,
          c.Descripcion };