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IConventionIndexBuilder.IsUnique(Nullable<Boolean>, Boolean) Metode

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Definisi

Ruang nama:
Microsoft.EntityFrameworkCore.Metadata.Builders
Rakitan:
Microsoft.EntityFrameworkCore.dll
Paket:
Microsoft.EntityFrameworkCore v3.0.0
Paket:
Microsoft.EntityFrameworkCore v3.1.0
Paket:
Microsoft.EntityFrameworkCore v5.0.0
Paket:
Microsoft.EntityFrameworkCore v6.0.0
Paket:
Microsoft.EntityFrameworkCore v7.0.0
Paket:
Microsoft.EntityFrameworkCore v8.0.0

Mengonfigurasi apakah indeks ini unik (yaitu setiap set nilai harus unik).

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

Parameter

unique
Nullable<Boolean>

Nilai yang menunjukkan apakah indeks unik.

fromDataAnnotation
Boolean

Menunjukkan apakah konfigurasi ditentukan menggunakan anotasi data.

Mengembalikan

IConventionIndexBuilder

Instans penyusun yang sama jika keunikannya dikonfigurasi, null jika tidak.

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