如何将外键列添加到AspNetUserRoles表Owin身份验证

Question

我目前正在开发一个MVC 5项目，我在其中创建了一个新表（代码优先）AspNetApplications（column1 ApplicationId，column2 ApplicationName）。

我想扩展AspNetUserRoles表，我希望将ApplicationId添加为外键列。

可以请任何人告诉我如何在代码优先方法中实现这一目标吗？

Answer 1

在我的问题之上，我已成功将ApplicationId添加为AspNetUserRoles表中的外键列，如下所示

public class AspNetUserRoles : IdentityUserRole
{
    [Key]
    public string ApplicationId { get; set; }

    [ForeignKey("ApplicationId")]
    public AspNetApplications AspNetApplications { get; set; }
}

现在我可以在表中看到ApplicationId列，但是在AspNetUserRoles表中添加了Discriminator列的地方发生了奇怪的事情。可以请有人告诉我这里做错了什么。以下是我的迁移脚本

public partial class AspNetUserRolesApplicationId : DbMigration
{
    public override void Up()
    {
        AddColumn("dbo.AspNetUserRoles", "ApplicationId", c => c.String(maxLength: 128));
        AddColumn("dbo.AspNetUserRoles", "Discriminator", c => c.String(nullable: false, maxLength: 128));
        CreateIndex("dbo.AspNetUserRoles", "ApplicationId");
        AddForeignKey("dbo.AspNetUserRoles", "ApplicationId", "dbo.AspNetApplications", "ApplicationId");
    }

    public override void Down()
    {
        DropForeignKey("dbo.AspNetUserRoles", "ApplicationId", "dbo.AspNetApplications");
        DropIndex("dbo.AspNetUserRoles", new[] { "ApplicationId" });
        DropColumn("dbo.AspNetUserRoles", "Discriminator");
        DropColumn("dbo.AspNetUserRoles", "ApplicationId");
    }
}