IDbCommandInterceptor.ReaderExecutingAsync Yöntem
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
EF çağrılmadan hemen önce çağrılır ExecuteReaderAsync().
public virtual System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>> ReaderExecutingAsync(System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData eventData, Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> result, System.Threading.CancellationToken cancellationToken = default);
public System.Threading.Tasks.Task<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>> ReaderExecutingAsync(System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData eventData, Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> result, System.Threading.CancellationToken cancellationToken = default);
public System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>> ReaderExecutingAsync(System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData eventData, Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> result, System.Threading.CancellationToken cancellationToken = default);
abstract member ReaderExecutingAsync : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>>
override this.ReaderExecutingAsync : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>>
abstract member ReaderExecutingAsync : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>>
abstract member ReaderExecutingAsync : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult<System.Data.Common.DbDataReader>>
Public Overridable Function ReaderExecutingAsync (command As DbCommand, eventData As CommandEventData, result As InterceptionResult(Of DbDataReader), Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of InterceptionResult(Of DbDataReader))
Public Function ReaderExecutingAsync (command As DbCommand, eventData As CommandEventData, result As InterceptionResult(Of DbDataReader), Optional cancellationToken As CancellationToken = Nothing) As Task(Of InterceptionResult(Of DbDataReader))
Public Function ReaderExecutingAsync (command As DbCommand, eventData As CommandEventData, result As InterceptionResult(Of DbDataReader), Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of InterceptionResult(Of DbDataReader))
Parametreler
- command
- DbCommand
Komutu.
- eventData
- CommandEventData
Komut ve yürütme hakkında bağlamsal bilgiler.
- result
- InterceptionResult<DbDataReader>
Varsa geçerli sonucu temsil eder.
Önceki bir kesme noktası tarafından çağrılarak trueSuppressWithResult(TResult)yürütme engellendiyse bu değer olarak ayarlanmış olacaktırHasResult.
Bu değer genellikle bu yöntemin uygulanması için dönüş değeri olarak kullanılır.
- cancellationToken
- CancellationToken
CancellationToken Görevin tamamlanmasını beklerken gözlemlemek için bir.
Döndürülenler
HasResult False ise EF normal şekilde devam eder.
HasResult True ise EF, gerçekleştirmek üzere olduğu işlemi gizler ve bunun yerine kullanırResult.
Sonucu değiştirmeye çalışmayan herhangi bir kesme noktası için bu yöntemin bir uygulaması, genellikle kullanarak geçirilen değeri döndürmektir resultFromResult<TResult>(TResult)
Özel durumlar
CancellationToken İptal edilirse.