Migration-添加表(加外键)

 public partial class _222 : DbMigration
    {
        public override void Up()
        {
            //DropForeignKey("dbo.Assets", "AssetBorrow_Id", "dbo.AssetBorrows");
            //DropIndex("dbo.Assets", new[] { "AssetBorrow_Id" });
            CreateTable(
                "dbo.AssetBorrowSubs",
                c => new
                    {
                        Id = c.Guid(nullable: false),
                        AssetCode = c.String(),
                        AssetName = c.String(),
                        AssetNum = c.String(),
                        Brand = c.String(),
                        Model = c.String(),
                        AssetId = c.String(),
                        Created = c.DateTime(nullable: false),
                        AssetBorrow_Id = c.Guid(),
                    })
                .PrimaryKey(t => t.Id)
                .ForeignKey("dbo.AssetBorrows", t => t.AssetBorrow_Id)
                .Index(t => t.AssetBorrow_Id);

            //DropColumn("dbo.Assets", "AssetBorrow_Id");
        }

        public override void Down()
        {
            //AddColumn("dbo.Assets", "AssetBorrow_Id", c => c.Guid());
            DropForeignKey("dbo.AssetBorrowSubs", "AssetBorrow_Id", "dbo.AssetBorrows");
            DropIndex("dbo.AssetBorrowSubs", new[] { "AssetBorrow_Id" });
            DropTable("dbo.AssetBorrowSubs");
        //    CreateIndex("dbo.Assets", "AssetBorrow_Id");
        //    AddForeignKey("dbo.Assets", "AssetBorrow_Id", "dbo.AssetBorrows", "Id");
        }
    }