Question

我在实体中像这样配置的SQL Server中有一个计算主键：

        var e = builder.Entity<MyEntity>();

        e.ToTable("MyTable", "MySchema")
            .HasKey(k => k.Id);

        e.Property(k => k.Id)
            .ValueGeneratedOnAdd();

        e.Property(k => k.Id)
            .Metadata.BeforeSaveBehavior = PropertySaveBehavior.Ignore;

        e.Ignore(i => i.PreviousId);

在EF Core 2.1中保存更改后如何更新属性？

myEntity.RelatedProperty = 1;
_db.SaveChangesAsync();

// Here I want to have my updated Id

更新：这是表的定义：

CREATE TABLE [MySchema][MyTable](
    [Id]  AS (isnull((CONVERT([nvarchar],[RelatedProperty],(0))+'-')+CONVERT([nvarchar],[RelatedProperty2],(0)),'-')) PERSISTED NOT NULL,
    [RelatedProperty] [int] NOT NULL,
    [RelatedProperty2] [int] NOT NULL   
 CONSTRAINT [PK_MyTable] PRIMARY KEY CLUSTERED 
(
    [Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

Answer 1

您没有。不支持更改PK。如果您认为这是个问题，请等到开始尝试在外键关系中使用它们。

EF Core计算的主键属性未更新

1 个答案: