OwnershipBuilder<TEntity,TDependentEntity>.HasPrincipalKey Method
Definition
Important
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Overloads
| HasPrincipalKey(Expression<Func<TEntity,Object>>) |
Configures the unique property(s) that this relationship targets. Typically you would only call this method if you want to use a property(s) other than the primary key as the principal property(s). If the specified property(s) is not already a unique constraint (or the primary key) then a new unique constraint will be introduced. |
| HasPrincipalKey(String[]) |
Configures the unique property(s) that this relationship targets. Typically you would only call this method if you want to use a property(s) other than the primary key as the principal property(s). If the specified property(s) is not already a unique constraint (or the primary key) then a new unique constraint will be introduced. |
HasPrincipalKey(Expression<Func<TEntity,Object>>)
Configures the unique property(s) that this relationship targets. Typically you would only call this method if you want to use a property(s) other than the primary key as the principal property(s). If the specified property(s) is not already a unique constraint (or the primary key) then a new unique constraint will be introduced.
public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.OwnershipBuilder<TEntity,TDependentEntity> HasPrincipalKey (System.Linq.Expressions.Expression<Func<TEntity,object>> keyExpression);public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.OwnershipBuilder<TEntity,TDependentEntity> HasPrincipalKey (System.Linq.Expressions.Expression<Func<TEntity,object?>> keyExpression);override this.HasPrincipalKey : System.Linq.Expressions.Expression<Func<'Entity, obj>> -> Microsoft.EntityFrameworkCore.Metadata.Builders.OwnershipBuilder<'Entity, 'DependentEntity (requires 'Entity : null and 'DependentEntity : null)>Public Overridable Function HasPrincipalKey (keyExpression As Expression(Of Func(Of TEntity, Object))) As OwnershipBuilder(Of TEntity, TDependentEntity)Parameters
- keyExpression
- Expression<Func<TEntity,Object>>
A lambda expression representing the reference key property(s) (t => t.Id).
If the principal key is made up of multiple properties then specify an anonymous type including the
properties (t => new { t.Id1, t.Id2 }). The order specified should match the order of
corresponding properties in HasForeignKey(Expression<Func<TDependentEntity,Object>>).
Returns
The same builder instance so that multiple configuration calls can be chained.
Applies to
HasPrincipalKey(String[])
Configures the unique property(s) that this relationship targets. Typically you would only call this method if you want to use a property(s) other than the primary key as the principal property(s). If the specified property(s) is not already a unique constraint (or the primary key) then a new unique constraint will be introduced.
public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.OwnershipBuilder<TEntity,TDependentEntity> HasPrincipalKey (params string[] keyPropertyNames);override this.HasPrincipalKey : string[] -> Microsoft.EntityFrameworkCore.Metadata.Builders.OwnershipBuilder<'Entity, 'DependentEntity (requires 'Entity : null and 'DependentEntity : null)>Public Overridable Function HasPrincipalKey (ParamArray keyPropertyNames As String()) As OwnershipBuilder(Of TEntity, TDependentEntity)Parameters
- keyPropertyNames
- String[]
The name(s) of the reference key property(s).
Returns
The same builder instance so that multiple configuration calls can be chained.
Applies to
Entity Framework