如何在Entity Framework6中编写IQueryable连接

public class MyDbContext : DbContext
{
    public DbSet<Customer> Customers { get; set; }
    public DbSet<Order> Orders { get; set; }
}

public class Customer
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class Order
{
    public int Id { get; set; }
    public int CustomerId { get; set; }
    public DateTime OrderDate { get; set; }
}

using (var context = new MyDbContext())
{
    var query = from c in context.Customers
                join o in context.Orders on c.Id equals o.CustomerId
                where c.Name == "John"
                select new { CustomerName = c.Name, OrderDate = o.OrderDate };

    var results = query.ToList();
}