ReferenceOwnershipBuilder<TEntity,TRelatedEntity>.HasKey Method
Definition
Important
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Sets the properties that make up the primary key for this owned entity type.
public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.KeyBuilder HasKey (System.Linq.Expressions.Expression<Func<TRelatedEntity,object>> keyExpression);override this.HasKey : System.Linq.Expressions.Expression<Func<'RelatedEntity, obj>> -> Microsoft.EntityFrameworkCore.Metadata.Builders.KeyBuilderPublic Overridable Function HasKey (keyExpression As Expression(Of Func(Of TRelatedEntity, Object))) As KeyBuilderParameters
- keyExpression
- Expression<Func<TRelatedEntity,Object>>
A lambda expression representing the primary key property(s) (blog => blog.Url).
If the primary key is made up of multiple properties then specify an anonymous type including the
properties (post => new { post.Title, post.BlogId }).
Returns
An object that can be used to configure the primary key.
Applies to
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Entity Framework