IConventionRelationshipBuilder.IsRequired Method

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Definition

Namespace:
Microsoft.EntityFrameworkCore.Metadata.Builders
Assembly:
Microsoft.EntityFrameworkCore.dll
Package:
Microsoft.EntityFrameworkCore v3.0.0
Package:
Microsoft.EntityFrameworkCore v3.1.0

Configures whether this is a required relationship (i.e. whether none the foreign key properties can be assigned null).

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

Parameters

required
Nullable<Boolean>

A value indicating whether this is a required relationship. null to reset to default.

fromDataAnnotation
Boolean

Indicates whether the configuration was specified using a data annotation.

Returns

IConventionRelationshipBuilder

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

Applies to