.ReadAsync Method (CancellationToken)
An asynchronous version of
, which advances the Read to the next record. SqlDataReader
The cancellation token can be used to request that the operation be abandoned before the command timeout elapses. Exceptions will be reported via the returned Task object.
public override Task< bool> ReadAsync(
Exception Condition InvalidOperationException
more than once for the same instance before task completion. ReadAsync is specified in the connection string. Context Connection=true SqlException
SQL Server returned an error while executing the command text.
behavior parameter of is set to ExecuteReaderAsync , Default reads the entire row before returning the Task. ReadAsync
For more information, including code samples, about asynchronous programming in the .NET Framework Data Provider for SQL Server, see
. Asynchronous Programming .NET Framework
Supported in: 4.5.1, 4.5
Windows 8.1, Windows Server 2012 R2, 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.
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