DbCommand.ExecuteReaderAsync Method
Definition
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader.
Overloads
| ExecuteReaderAsync() |
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader. Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken) with CancellationToken.None. |
| ExecuteReaderAsync(CommandBehavior) |
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader. Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken). |
| ExecuteReaderAsync(CancellationToken) |
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader. This method propagates a notification that operations should be canceled. Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken). |
| ExecuteReaderAsync(CommandBehavior, CancellationToken) |
Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken). |
Remarks
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.
ExecuteReaderAsync()
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader.
Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken) with CancellationToken.None.
public:
System::Threading::Tasks::Task<System::Data::Common::DbDataReader ^> ^ ExecuteReaderAsync();public System.Threading.Tasks.Task<System.Data.Common.DbDataReader> ExecuteReaderAsync ();member this.ExecuteReaderAsync : unit -> System.Threading.Tasks.Task<System.Data.Common.DbDataReader>Public Function ExecuteReaderAsync () As Task(Of DbDataReader)Returns
A task representing the asynchronous operation.
Exceptions
An error occurred while executing the command text.
An invalid CommandBehavior value.
Remarks
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.
Applies to
ExecuteReaderAsync(CommandBehavior)
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader.
Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken).
public:
System::Threading::Tasks::Task<System::Data::Common::DbDataReader ^> ^ ExecuteReaderAsync(System::Data::CommandBehavior behavior);public System.Threading.Tasks.Task<System.Data.Common.DbDataReader> ExecuteReaderAsync (System.Data.CommandBehavior behavior);member this.ExecuteReaderAsync : System.Data.CommandBehavior -> System.Threading.Tasks.Task<System.Data.Common.DbDataReader>Public Function ExecuteReaderAsync (behavior As CommandBehavior) As Task(Of DbDataReader)Parameters
- behavior
- CommandBehavior
One of the enumeration values that specified the command behavior.
Returns
A task representing the asynchronous operation.
Exceptions
An error occurred while executing the command text.
An invalid CommandBehavior value.
Remarks
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.
Applies to
ExecuteReaderAsync(CancellationToken)
An asynchronous version of ExecuteReader, which executes the CommandText against the Connection and returns a DbDataReader. This method propagates a notification that operations should be canceled.
Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken).
public:
System::Threading::Tasks::Task<System::Data::Common::DbDataReader ^> ^ ExecuteReaderAsync(System::Threading::CancellationToken cancellationToken);public System.Threading.Tasks.Task<System.Data.Common.DbDataReader> ExecuteReaderAsync (System.Threading.CancellationToken cancellationToken);member this.ExecuteReaderAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Data.Common.DbDataReader>Public Function ExecuteReaderAsync (cancellationToken As CancellationToken) As Task(Of DbDataReader)Parameters
- cancellationToken
- CancellationToken
A token to cancel the asynchronous operation.
Returns
A task representing the asynchronous operation.
Exceptions
An error occurred while executing the command text.
An invalid CommandBehavior value.
Remarks
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.
Applies to
ExecuteReaderAsync(CommandBehavior, CancellationToken)
public:
System::Threading::Tasks::Task<System::Data::Common::DbDataReader ^> ^ ExecuteReaderAsync(System::Data::CommandBehavior behavior, System::Threading::CancellationToken cancellationToken);public System.Threading.Tasks.Task<System.Data.Common.DbDataReader> ExecuteReaderAsync (System.Data.CommandBehavior behavior, System.Threading.CancellationToken cancellationToken);member this.ExecuteReaderAsync : System.Data.CommandBehavior * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Data.Common.DbDataReader>Public Function ExecuteReaderAsync (behavior As CommandBehavior, cancellationToken As CancellationToken) As Task(Of DbDataReader)Parameters
- behavior
- CommandBehavior
One of the enumeration values that specifies the command behavior.
- cancellationToken
- CancellationToken
A token to cancel the asynchronous operation.
Returns
A task representing the asynchronous operation.
Exceptions
An error occurred while executing the command text.
An invalid CommandBehavior value.
Remarks
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.