private static CancellationTokenRegistration?RegisterCancellationToken(CancellationToken cancellationToken, out CancellableOperationBase cancellableOperation)
{
if (cancellationToken.CanBeCanceled)
{
cancellableOperation = new CancellableOperationBase();
return(cancellationToken.Register(cancellableOperation.Cancel));
}
cancellableOperation = null;
return(null);
}
private static void AssignCancellableOperation(CancellableOperationBase cancellableOperation, ICancellableAsyncResult asyncResult, CancellationToken cancellationToken)
{
if (cancellableOperation != null)
{
cancellableOperation.CancelDelegate = asyncResult.Cancel;
if (cancellationToken.IsCancellationRequested)
{
cancellableOperation.Cancel();
}
}
}
