DbCommandInterceptor.ReaderExecutingAsync 메서드

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정의

네임스페이스:
Microsoft.EntityFrameworkCore.Diagnostics
어셈블리:
Microsoft.EntityFrameworkCore.Relational.dll
패키지:
Microsoft.EntityFrameworkCore.Relational v3.0.0
패키지:
Microsoft.EntityFrameworkCore.Relational v3.1.0
패키지:
Microsoft.EntityFrameworkCore.Relational v5.0.0
패키지:
Microsoft.EntityFrameworkCore.Relational v6.0.0
패키지:
Microsoft.EntityFrameworkCore.Relational v7.0.0
패키지:
Microsoft.EntityFrameworkCore.Relational v8.0.0

EF가 를 호출하기 직전에 호출 ExecuteReaderAsync()됩니다.

public virtual 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 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);
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>>
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.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>>
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>>
Public Overridable 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 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))

매개 변수

command
DbCommand

명령입니다.

eventData
CommandEventData

명령 및 실행에 대한 컨텍스트 정보입니다.

result
InterceptionResult<DbDataReader>

있는 경우 현재 결과를 나타냅니다. 이전의 일부 인터셉터에서 를 호출SuppressWithResult(TResult)하여 true 실행을 억제한 경우 이 값은 로 설정됩니다HasResult. 이 값은 일반적으로이 메서드의 구현에 대 한 반환 값으로 사용 합니다.

cancellationToken
CancellationToken

CancellationToken 작업이 완료 될 때까지 기다리는 동안 관찰할 입니다.

반환

Task<InterceptionResult<DbDataReader>>
ValueTask<InterceptionResult<DbDataReader>>

가 false이면 HasResult EF는 정상적으로 계속됩니다. 가 true이면 HasResult EF는 수행하려고 하던 작업을 표시하지 않고 대신 사용합니다 Result . 결과를 변경하려고 하지 않는 인터셉터에 대해 이 메서드의 일반적인 구현은 전달된 값을 반환 result 하는 것입니다. FromResult<TResult>(TResult)

구현

ReaderExecutingAsync(DbCommand, CommandEventData, InterceptionResult<DbDataReader>, CancellationToken)

예외

OperationCanceledException

CancellationToken이 취소된 경우.

적용 대상