如何在EF Core中创建外键关系？

public class Order
{
    public int OrderId { get; set; }
    public string OrderNumber { get; set; }
    
    [ForeignKey("Customer")]
    public int CustomerId { get; set; }
    public Customer Customer { get; set; }
}

public class Order
{
    public int OrderId { get; set; }
    public string OrderNumber { get; set; }
    
    public int CustomerId { get; set; }
    public Customer Customer { get; set; }
    
    public static void Configure(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Order>()
            .HasOne(o => o.Customer)
            .WithMany()
            .HasForeignKey(o => o.CustomerId);
    }
}

public class YourDbContext : DbContext
{
    public DbSet<Order> Orders { get; set; }
    public DbSet<Customer> Customers { get; set; }
    
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        
        Order.Configure(modelBuilder);
    }
}

dotnet ef migrations add InitialCreate

dotnet ef database update