C# 实体框架一对一Fluent Api无法删除数据
这是模型中的礼物类。这应该是父类C# 实体框架一对一Fluent Api无法删除数据,c#,entity-framework,fluent-nhibernate,C#,Entity Framework,Fluent Nhibernate,这是模型中的礼物类。这应该是父类 public class Gift { public int GiftId { get; set; } public string Title { get; set; } public string Brand { get; set; } public double Price { get; set; } public bool Chosen { get
public class Gift
{
public int GiftId { get; set; }
public string Title { get; set; }
public string Brand { get; set; }
public double Price { get; set; }
public bool Chosen { get; set; }
public virtual Shop Shop { get; set; }
public virtual Person Person { get; set; }
}
这是Shop类,这两个类有一对一的关系。礼物应该有商店,商店应该有礼物
public class Shop
{
public int ShopId { get; set; }
public string Name { get; set; }
public string Street { get; set; }
public string Number { get; set; }
public string Postcode { get; set; }
public string District { get; set; }
public virtual Gift Gift { get; set; }
}
这是我模型中的第三个类。该类与礼品类具有一对零的关系。如果礼物没有被选择,它就没有任何人。这个人也一样
public class Person
{
public int Id { get; set; }
public string FirstName{ get; set; }
public string Surname{ get; set; }
public string EmailAdress { get; set; }
public virtual Gift Gift { get; set; }
}
这是我多次修改的fluentapi
modelBuilder.Entity<Gift>()
.HasOptional(x => x.Person);
modelBuilder.Entity<Person>()
.HasRequired(x => x.Gift);
modelBuilder.Entity<Gift>()
.HasRequired(x => x.Shop).WithOptional(x => x.Gift).Map(x => x.MapKey("ShopId"));
modelBuilder.Entity<Shop>()
.HasRequired(x => x.Gift).WithOptional(x => x.Shop).Map(x => x.MapKey("GiftId"));
modelBuilder.Entity()
.has可选(x=>x.Person);
modelBuilder.Entity()
.HasRequired(x=>x.Gift);
modelBuilder.Entity()
.HasRequired(x=>x.Shop).WithOptional(x=>x.Gift).Map(x=>x.MapKey(“ShopId”);
modelBuilder.Entity()
.HasRequired(x=>x.Gift)。with可选(x=>x.Shop).Map(x=>x.MapKey(“GiftId”);
我可以保存数据,但当我想删除礼物时,我无法成功,并且出现问题。我怎样才能解决这个问题?唐克斯已经死了 我已经修好了
modelBuilder.Entity()
.HasRequired(x=>x.Gift)
.WithRequiredDependent();
modelBuilder.Entity()
.has必需(x=>x.Shop)
.WithRequiredPrincipal();
基于模型创建(modelBuilder);
modelBuilder.Entity<Shop>()
.HasRequired(x => x.Gift)
.WithRequiredDependent();
modelBuilder.Entity<Gift>()
.HasRequired(x => x.Shop)
.WithRequiredPrincipal();
base.OnModelCreating(modelBuilder);