Net Fx 4.0 Review

public async Task<List<WorkItem>> ProcessItemsAsync( IEnumerable<WorkItem> items, CancellationToken cancellationToken, IProgress<string> progress = null) { var inputQueue = new BlockingCollection<WorkItem>(); var results = new ConcurrentBag<WorkItem>(); // Start producer task var producerTask = Task.Run(() => { foreach (var item in items) { cancellationToken.ThrowIfCancellationRequested(); inputQueue.Add(item, cancellationToken); } inputQueue.CompleteAdding(); }, cancellationToken);

// Simulate transformation work await Task.Delay(100, token); input.ProcessedData = input.InputData.ToUpper().Trim(); Console.WriteLine($"[{StageName}] Item {input.Id}: '{input.InputData}' -> '{input.ProcessedData}'"); return input; } } net fx 4.0

// Simulate enrichment (e.g., database lookup, API call) await Task.Delay(80, token); input.ProcessedData = $"[ENRICHED] {input.ProcessedData} - Length: {input.ProcessedData.Length}"; Console.WriteLine($"[{StageName}] Item {input.Id}: Enriched data"); return input; } } public async Task&lt

public async Task<WorkItem> ProcessAsync(WorkItem input, CancellationToken token) { if (!input.IsValid) return input; var results = new ConcurrentBag&lt