我正在尝试使用EF从我的数据库中获取数据。我有一个表干预,其客户端与之关联,如下所示:
public partial class Client
{
public Client()
{
this.Interventions = new List<Intervention>();
}
public int client_id { get; set; }
public string full_name { get; set; }
public string cgroup { get; set; }
public string nation { get; set; }
public virtual ICollection<Intervention> Interventions { get; set; }
}
public partial class Intervention
{
public int intervention_id { get; set; }
public int technician_id { get; set; }
public int client_id { get; set; }
public string type { get; set; }
public int done { get; set; }
public int year { get; set; }
public int month { get; set; }
public int week { get; set; }
public Nullable<int> avg_response_time { get; set; }
public int number_of_equip { get; set; }
public virtual Client Client { get; set; }
public virtual Technician Technician { get; set; }
}
我可以通过这样做获得一系列干预措施:
public object Any(GetInterventions request)
{
List<Intervention> dbItems;
using (var context = new operationsContext())
{
context.Configuration.LazyLoadingEnabled = false;
dbItems = context.Interventions.ToList();
return new GetInterventionsResponse{
interventions = dbItems
};
}
}
虽然,当我尝试检索与每个干预相关联的客户端时
dbItems = context.Interventions.Include("Client").ToList();
通过包含客户端导航属性,我得到一个Visual Studio的stackOverflowException。 我使用EF做错了什么,或者只是一般的糟糕编程问题?
提前致谢
答案 0 :(得分:2)
通过在我想要在JSON响应上序列化的类和字段引入[DataContract]和[DataMember]的装饰来解决问题。就像下面的例子一样:
using System.Runtime.Serialization;
namespace OperationsAPI.Models
{
[DataContract]
public partial class Intervention
{
public int intervention_id { get; set; }
public int technician_id { get; set; }
public int client_id { get; set; }
public string type { get; set; }
public int done { get; set; }
public int year { get; set; }
[DataMember]
public int month { get; set; }
[DataMember]
public int week { get; set; }
[DataMember]
public Nullable<int> avg_response_time { get; set; }
public int number_of_equip { get; set; }
[DataMember]
public virtual Client Client { get; set; }
public virtual Technician Technician { get; set; }
}
}