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这里是我的课:LINQ查询到集团母公司和各子rentities
class Country
{
public Country()
{
States = new List<State>();
}
public int Id { get; set; }
public int Name { get; set; }
public virtual ICollection<State> States { get; set; }
}
class State
{
public State()
{
Counties = new List<County>();
}
public int Id { get; set; }
public int Name { get; set; }
public int CountryID { get; set; }
[ForeignKey("CountryID")]
public virtual Country Country { get; set; }
public virtual ICollection<County> Counties { get; set; }
}
class County
{
public County()
{
Cities = new List<City>();
}
public int Id { get; set; }
public int Name { get; set; }
public int StateID { get; set; }
[ForeignKey("StateID")]
public virtual State State { get; set; }
public virtual ICollection<City> Cities { get; set; }
}
class City
{
public int Id { get; set; }
public int Name { get; set; }
public int CountyID { get; set; }
[ForeignKey("CountyID")]
public virtual County County { get; set; }
}
我有创造,这将使我的每个实体的所有记录上述由国家,当时的国家分组查询困难,然后县,然后城市
我最终试图把这个到backbone.js treeview。
什么是正确的Linq查询在各自小组收集记录数据
你想怎么组记录?我期待的是一个包含国家,州,县和城市的客户记录,以便您可以按国家,州,县,城市对客户进行分组。 – Kristof