这应该很简单。
我有客户和项目:
public class Client
{
public int ClientID { get; set; }
public string ClientName { get; set; }
public virtual ICollection<Project> Projects { get; set; }
}
public class Project
{
public int ProjectID { get; set; }
public string ProjectName { get; set; }
}
一切正常。在我的Projects表中,我有一个字段:Client_ClientID存储关系。
现在我想在Project上添加一个导航属性到Client:
public class Project
{
public int ProjectID { get; set; }
public string ProjectName { get; set; }
// navigation properties
public virtual Client Client { get; set; }
}
当我运行Update-Database时,我收到错误:
Foreign key 'FK_dbo.Projects_dbo.Clients_Client_ClientID' references invalid column 'Client_ClientID' in referencing table 'Projects'
详细的SQL显示为:
EXECUTE sp_rename @objname = N'dbo.Projects.Client_ClientID', @newname = N'Client_ClientID1', @objtype = N'COLUMN'
ALTER TABLE [dbo].[Projects] ADD CONSTRAINT [FK_dbo.Projects_dbo.Clients_Client_ClientID] FOREIGN KEY ([Client_ClientID]) REFERENCES [dbo].[Clients] ([ClientID])
我不确定为什么它在尝试将Client_ClientID重命名为Client_ClientID1之前,在添加约束之前 - 看起来很奇怪?
我出错了什么?
答案 0 :(得分:0)
将ForeignKeyAttribute
添加到Project
班级。
public class Project
{
public int ProjectID { get; set; }
public string ProjectName { get; set; }
[ForeignKey("Client")]
public int ClientID { get; set; }
public virtual Client Client { get; set; }
}