IConventionForeignKeyBuilder.IsUnique Method

Definition

Configures whether the dependent entity is unique (i.e. whether the navigation to the dependent entity type is not a collection).

public Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder IsUnique (bool? unique, bool fromDataAnnotation = false);
public Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder? IsUnique (bool? unique, bool fromDataAnnotation = false);
abstract member IsUnique : Nullable<bool> * bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder
Public Function IsUnique (unique As Nullable(Of Boolean), Optional fromDataAnnotation As Boolean = false) As IConventionForeignKeyBuilder

Parameters

unique
Nullable<Boolean>

A value indicating whether the dependent entity is unique. null to reset to default.

fromDataAnnotation
Boolean

Indicates whether the configuration was specified using a data annotation.

Returns

The same builder instance if the uniqueness was configured, null otherwise.

Applies to