EntityTypeBuilder<TEntity>.HasDiscriminator<TDiscriminator> 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Metadata.Builders

組件:

Microsoft.EntityFrameworkCore.dll

套件:

Microsoft.EntityFrameworkCore v8.0.0

設定用來識別存放區中實體類型的辨識子屬性。

public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.DiscriminatorBuilder<TDiscriminator> HasDiscriminator<TDiscriminator> (System.Linq.Expressions.Expression<Func<TEntity,TDiscriminator>> propertyExpression);

override this.HasDiscriminator : System.Linq.Expressions.Expression<Func<'Entity, 'Discriminator>> -> Microsoft.EntityFrameworkCore.Metadata.Builders.DiscriminatorBuilder<'Discriminator>

Public Overridable Function HasDiscriminator(Of TDiscriminator) (propertyExpression As Expression(Of Func(Of TEntity, TDiscriminator))) As DiscriminatorBuilder(Of TDiscriminator)

類型參數

TDiscriminator

儲存在鑒別子屬性中的數值型別。

參數

propertyExpression

Expression<Func<TEntity,TDiscriminator>>

Lambda 運算式，表示要當做辨別子 ( blog => blog.Discriminator) 的屬性。

傳回

DiscriminatorBuilder<TDiscriminator>

允許設定辨別子屬性的建置器。