我有问题，节省了当我使用的GUID标识符。能够 有人瑟我在这里缺少什么？创建我自己的GUID，所以我不希望它被数据库产生。

注：我曾在映射guid.combo到没有任何成功。

 公共类订单
{
    公共虚拟的Guid标识{获取;组; }
    公共虚拟的ICollection＆LT;订单项＆GT;的OrderItems {获得;组; }
    公共虚拟用户用户{获得;组; }
    公共虚拟日期时间？ CREATEDATE {获得;组; }
    公共虚拟日期时间？发货日期{获得;组; }
    公共虚拟字符串OrderStatus {获得;组; }

    公安（）
    {
        的OrderItems =新的集合＆LT;订单项＆GT;（）;
    }

    公共虚拟无效AddOrderItems（订单项订单项）
    {
        orderItem.Order =这一点;
        OrderItems.Add（订单项）;
    }
}
 

OrderMap：

 公共OrderMap（）
    {
        ID（X =＆GT; x.Id）。.ColumnName（ID）GeneratedBy.Guid（）;

        地图（X =＆GT; x.CreateDate）;
        地图（X =＆GT; x.ShippedDate）;
        地图（X =＆GT; x.OrderStatus）;

        参考文献（X =＆GT; x.User）;
        的hasMany（X =＆GT; x.OrderItems）。.Cascade.All（）反向（）LazyLoad（）;
    }
 

解决方案

ID（X => x.Id）.ColumnName（ID）。GeneratedBy.Assigned（）

此外.WithUnsavedValue（Guid.Empty）可能是必要的，但我不知道。你可能需要告诉NHibernate的使用保存或更新（不SaveOrUpdate）各一次，反正。不是一个大的专家在这里...但你需要使用.Assigned（）是肯定的。

i got problems with saving when i use Guid as identifier. can anybody se what i am missing here? i create my own guid so i dont want it to be generated by database.

NOTE: i have tried the guid.combo in mapping to without any success.

public class Order
{
    public virtual Guid Id { get; set; }
    public virtual ICollection<OrderItem> OrderItems { get; set; }
    public virtual User User { get; set; }
    public virtual DateTime? CreateDate { get; set; }
    public virtual DateTime? ShippedDate { get; set; }
    public virtual string OrderStatus { get; set; }

    public Order()
    {
        OrderItems = new Collection<OrderItem>();
    }

    public virtual void AddOrderItems(OrderItem orderItem)
    {
        orderItem.Order = this;
        OrderItems.Add(orderItem);
    }
}

OrderMap:

public OrderMap()
    {
        Id(x => x.Id).ColumnName("Id").GeneratedBy.Guid();

        Map(x => x.CreateDate);
        Map(x => x.ShippedDate);
        Map(x => x.OrderStatus);

        References(x => x.User);
        HasMany(x => x.OrderItems).Cascade.All().Inverse().LazyLoad();
    } 

Id(x => x.Id).ColumnName("Id").GeneratedBy.Assigned()

Also .WithUnsavedValue(Guid.Empty) might be needed but I'm not sure. You'll probably need to tell NHibernate to use Save or Update (not SaveOrUpdate) each time, anyway. Not a big expert here... but you need to use .Assigned() for sure.