Try this.
ClassificationResult IsNot Nothing And ClassificationResult.Any AndAlso (ClassificationResult(0) IsNot Nothing AndAlso Not String.IsNullOrEmpty(ClassificationResult(0).ToString))
Try this.
ClassificationResult IsNot Nothing And ClassificationResult.Any AndAlso (ClassificationResult(0) IsNot Nothing AndAlso Not String.IsNullOrEmpty(ClassificationResult(0).ToString))