如何在实体框架中加载特定对象

// 创建实体模型
public class MyDbContext : DbContext
{
    public DbSet<Customer> Customers { get; set; }
    public DbSet<Order> Orders { get; set; }
}

// 定义实体类
public class Customer
{
    public int Id { get; set; }
    public string Name { get; set; }
    public ICollection<Order> Orders { get; set; }
}

public class Order
{
    public int Id { get; set; }
    public string Product { get; set; }
    public int CustomerId { get; set; }
    public Customer Customer { get; set; }
}

// 查询特定对象
using (var context = new MyDbContext())
{
    var customer = context.Customers
        .Where(c => c.Id == 1)
        .Include(c => c.Orders)
        .FirstOrDefault();
    
    if (customer != null)
    {
        // 加载特定对象的相关对象
        foreach (var order in customer.Orders)
        {
            Console.WriteLine(order.Product);
        }
    }
}