IRelationalCommand.ExecuteScalarAsync Metode
Definisi
Penting
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Overload
| ExecuteScalarAsync(RelationalCommandParameterObject, CancellationToken) |
Secara asinkron menjalankan perintah dengan satu hasil skalar. |
| ExecuteScalarAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, CancellationToken) |
Secara asinkron menjalankan perintah dengan satu hasil skalar. |
| ExecuteScalarAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, Boolean, CancellationToken) |
Kedaluwarsa.
Secara asinkron menjalankan perintah dengan satu hasil skalar. |
ExecuteScalarAsync(RelationalCommandParameterObject, CancellationToken)
Secara asinkron menjalankan perintah dengan satu hasil skalar.
public System.Threading.Tasks.Task<object> ExecuteScalarAsync (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject, System.Threading.CancellationToken cancellationToken = default);public System.Threading.Tasks.Task<object?> ExecuteScalarAsync (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject, System.Threading.CancellationToken cancellationToken = default);abstract member ExecuteScalarAsync : Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>Public Function ExecuteScalarAsync (parameterObject As RelationalCommandParameterObject, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Object)Parameter
- parameterObject
- RelationalCommandParameterObject
Parameter untuk metode ini.
- cancellationToken
- CancellationToken
A CancellationToken untuk mengamati sambil menunggu tugas selesai.
Mengembalikan
Tugas yang mewakili operasi asinkron. Hasil tugas berisi hasil perintah.
Pengecualian
CancellationToken Jika dibatalkan.
Berlaku untuk
ExecuteScalarAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, CancellationToken)
Secara asinkron menjalankan perintah dengan satu hasil skalar.
public System.Threading.Tasks.Task<object> ExecuteScalarAsync (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues, System.Threading.CancellationToken cancellationToken = default);abstract member ExecuteScalarAsync : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>Public Function ExecuteScalarAsync (connection As IRelationalConnection, parameterValues As IReadOnlyDictionary(Of String, Object), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Object)Parameter
- connection
- IRelationalConnection
Koneksi yang akan dieksekusi.
- parameterValues
- IReadOnlyDictionary<String,Object>
Nilai untuk parameter.
- cancellationToken
- CancellationToken
A CancellationToken untuk mengamati sambil menunggu tugas selesai.
Mengembalikan
Tugas yang mewakili operasi asinkron. Hasil tugas berisi hasil perintah.
Berlaku untuk
ExecuteScalarAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, Boolean, CancellationToken)
Perhatian
Use overload without 'manageConnection' parameter
Secara asinkron menjalankan perintah dengan satu hasil skalar.
public System.Threading.Tasks.Task<object> ExecuteScalarAsync (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues = default, bool manageConnection = true, System.Threading.CancellationToken cancellationToken = default);[System.Obsolete("Use overload without 'manageConnection' parameter")]
public System.Threading.Tasks.Task<object> ExecuteScalarAsync (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues, bool manageConnection, System.Threading.CancellationToken cancellationToken = default);abstract member ExecuteScalarAsync : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>[<System.Obsolete("Use overload without 'manageConnection' parameter")>]
abstract member ExecuteScalarAsync : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool * System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>Public Function ExecuteScalarAsync (connection As IRelationalConnection, Optional parameterValues As IReadOnlyDictionary(Of String, Object) = Nothing, Optional manageConnection As Boolean = true, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Object)Public Function ExecuteScalarAsync (connection As IRelationalConnection, parameterValues As IReadOnlyDictionary(Of String, Object), manageConnection As Boolean, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Object)Parameter
- connection
- IRelationalConnection
Koneksi yang akan dieksekusi.
- parameterValues
- IReadOnlyDictionary<String,Object>
Nilai untuk parameter.
- manageConnection
- Boolean
Nilai yang menunjukkan apakah akan membuka dan menutup koneksi sesuai kebutuhan.
- cancellationToken
- CancellationToken
A CancellationToken untuk mengamati sambil menunggu tugas selesai.
Mengembalikan
Tugas yang mewakili operasi asinkron. Hasil tugas berisi hasil perintah.
- Atribut
Berlaku untuk
Entity Framework