RuntimeEntityType.IReadOnlyEntityType.FindForeignKey Method

Reference

Definition

Namespace:: Microsoft.EntityFrameworkCore.Metadata

Assembly:: Microsoft.EntityFrameworkCore.dll

Package:: Microsoft.EntityFrameworkCore v6.0.0

Package:: Microsoft.EntityFrameworkCore v7.0.0

Package:: Microsoft.EntityFrameworkCore v8.0.0

Important

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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.

[System.Diagnostics.DebuggerStepThrough]
Microsoft.EntityFrameworkCore.Metadata.IReadOnlyForeignKey? IReadOnlyEntityType.FindForeignKey (System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> properties, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey principalKey, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType principalEntityType);

[System.Diagnostics.DebuggerStepThrough]
Microsoft.EntityFrameworkCore.Metadata.IReadOnlyForeignKey IReadOnlyEntityType.FindForeignKey (System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> properties, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey principalKey, Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType principalEntityType);

[<System.Diagnostics.DebuggerStepThrough>]
abstract member Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType.FindForeignKey : System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType -> Microsoft.EntityFrameworkCore.Metadata.IReadOnlyForeignKey
override this.Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType.FindForeignKey : System.Collections.Generic.IReadOnlyList<Microsoft.EntityFrameworkCore.Metadata.IReadOnlyProperty> * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyKey * Microsoft.EntityFrameworkCore.Metadata.IReadOnlyEntityType -> Microsoft.EntityFrameworkCore.Metadata.IReadOnlyForeignKey

Function FindForeignKey (properties As IReadOnlyList(Of IReadOnlyProperty), principalKey As IReadOnlyKey, principalEntityType As IReadOnlyEntityType) As IReadOnlyForeignKey Implements IReadOnlyEntityType.FindForeignKey

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

IReadOnlyForeignKey

The foreign key, or null if none is defined.

Implements

FindForeignKey(IReadOnlyList<IReadOnlyProperty>, IReadOnlyKey, IReadOnlyEntityType)

Attributes: DebuggerStepThroughAttribute

Applies to