FindAsync with non-primary key value

Question

public class Foo
{
     public int Id { get; set; }
     public int UserId { get; set; }
}

This appears to be the way to do this asynchronously:

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Answer 1

Assuming you are using Entity Framework 6.0 (prerelease):

var userId = ...;
var foos = await db.Foos.Where(x => x.UserId == userId).ToListAsync();