Async variant of FetchDataReader(CommandBehavior, QueryParameters). Creates a new Retrieval query from the elements passed in and executes that retrievalquery to return an open, ready to use IDataReader. The datareader's command behavior is set to the readerBehavior passed in. If a transaction is in progress, the command is wired to the transaction.

Task<IDataReader> FetchDataReaderAsync(
	CommandBehavior readerBehavior,
	QueryParameters parameters,
	CancellationToken cancellationToken
)

Function FetchDataReaderAsync ( 
	readerBehavior As CommandBehavior,
	parameters As QueryParameters,
	cancellationToken As CancellationToken
) As Task(Of IDataReader)