Question

达人们看看EF(Entity Framework)里一对关系体现报错

Supplier表
[Key]
public int ID { get; set; }
//供应商代码
[Required, StringLength(50)]
public string SupplierCode { get; set; }
//供应商名称
public string SupplierName { get; set; }
//供应商是否可用状态，是否冻结
[Required]
public bool Enabled { get; set; }
//供应商地址
[StringLength(500)]
public string SupplierAddress { get; set; }
//供应商联系人
[StringLength(100)]
public string SupplierContact { get; set; }
//供应商联系电话
[StringLength(100)]
public string SupplierTel { get; set; }
//供应商联系邮件地址
[StringLength(100)]
public string SupplierEmail { get; set; }
[StringLength(500)]
public string Remark { get; set; }
//供应商付款方式
public virtual Payment Payment { get; set; }

payment 表

[Key]
public int ID { get; set; }
//零件品类码
[Required, StringLength(50)]
public string PaymentName { get; set; }
[StringLength(500)]
public string Remark { get; set; }
public virtual ICollection<Supplier> Suppliers { get; set; }

flutapi

modelBuilder.Entity<Payment>()
.HasMany(z => z.Suppliers)
.WithOptional(zz => zz.Payment)
.Map(x => x.MapKey("PaymentID"));

老是报one to more 错误

Answer 1

看看这个：
http://www.cnblogs.com/qurengang/archive/2012/04/25/2470386.html

Answer 2

你这是C#还是Java？至少Linq 2 EF不是你那么写的。

追问

C#的代码啊

追答

那你为什么不用linq to ef，而要用什么flutapi（这个我还没用过）？