RuntimeEntityType.FindForeignKey Method
Definition
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Gets the foreign key for the given properties that points to a given primary or alternate key.
Returns null
if no foreign key is found.
public virtual Microsoft.EntityFrameworkCore.Metadata.RuntimeForeignKey? FindForeignKey (System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> properties, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey principalKey, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType principalEntityType);
abstract member FindForeignKey : System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType -> Microsoft.EntityFrameworkCore.Metadata.RuntimeForeignKey
override this.FindForeignKey : System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType -> Microsoft.EntityFrameworkCore.Metadata.RuntimeForeignKey
Public Overridable Function FindForeignKey (properties As IReadOnlyList(Of IReadOnlyProperty), principalKey As IReadOnlyKey, principalEntityType As IReadOnlyEntityType) As RuntimeForeignKey
Parameters
- properties
- IReadOnlyList<IReadOnlyProperty>
The properties that the foreign key is defined on.
- principalKey
- IReadOnlyKey
The primary or alternate key that is referenced.
- principalEntityType
- IReadOnlyEntityType
The entity type that the relationship targets. This may be different from the type that principalKey
is defined on when the relationship targets a derived type in an inheritance hierarchy (since the key is defined on the
base type of the hierarchy).
Returns
The foreign key, or null
if none is defined.
Applies to
Entity Framework