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ValueGenerator.NextValueAsync(EntityEntry, CancellationToken) Metodo

  • Riferimento

Definizione

Spazio dei nomi:
Microsoft.EntityFrameworkCore.ValueGeneration
Assembly:
Microsoft.EntityFrameworkCore.dll
Pacchetto:
Microsoft.EntityFrameworkCore v1.1.6
Pacchetto:
Microsoft.EntityFrameworkCore v2.0.3
Pacchetto:
Microsoft.EntityFrameworkCore v2.1.11
Pacchetto:
Microsoft.EntityFrameworkCore v2.2.6
Pacchetto:
Microsoft.EntityFrameworkCore v3.0.0
Pacchetto:
Microsoft.EntityFrameworkCore v3.1.0
Pacchetto:
Microsoft.EntityFrameworkCore v5.0.0
Pacchetto:
Microsoft.EntityFrameworkCore v6.0.0
Pacchetto:
Microsoft.EntityFrameworkCore v7.0.0
Pacchetto:
Microsoft.EntityFrameworkCore v8.0.0

Metodo modello da sostituire dalle implementazioni per eseguire la generazione di valori.

protected virtual System.Threading.Tasks.Task<object> NextValueAsync (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry, System.Threading.CancellationToken cancellationToken = default);
protected virtual System.Threading.Tasks.ValueTask<object> NextValueAsync (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry, System.Threading.CancellationToken cancellationToken = default);
protected virtual System.Threading.Tasks.ValueTask<object?> NextValueAsync (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry, System.Threading.CancellationToken cancellationToken = default);
abstract member NextValueAsync : Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>
override this.NextValueAsync : Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>
abstract member NextValueAsync : Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<obj>
override this.NextValueAsync : Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<obj>
Protected Overridable Function NextValueAsync (entry As EntityEntry, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Object)
Protected Overridable Function NextValueAsync (entry As EntityEntry, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Object)

Parametri

entry
EntityEntry

Voce di rilevamento delle modifiche dell'entità per cui viene generato il valore.

cancellationToken
CancellationToken

Oggetto CancellationToken da osservare durante l'attesa del completamento dell'attività.

Restituisce

Task<Object>
ValueTask<Object>

Valore generato.

Eccezioni

OperationCanceledException

Se CancellationToken viene annullato.

Commenti

Per altre informazioni ed esempi, vedere Generazione di valori EF Core .

Si applica a