DbCommand.ExecuteReaderAsync Method (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.
Namespace: System.Data.Common
Assembly: System.Data (in System.Data.dll)
Parameters
- cancellationToken
- Type: System.Threading.CancellationToken
The token to monitor for cancellation requests.
Return Value
Type: System.Threading.Tasks.Task<DbDataReader>A task representing the asynchronous operation.
| Exception | Condition |
|---|---|
| DbException | An error occurred while executing the command text. |
| ArgumentException | An invalid CommandBehavior value. |
Managed provider implementers must call ExecuteDbDataReaderAsync in ExecuteReaderAsync. For more information about asynchronous programming, see Asynchronous Programming.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
