Aborting a Service safe

Question

Hi, I have a service that do some work with a polling intervall. Task task = new Task( delegate { DoWork(); }); task.Wait(Convert.ToInt32(ConfigurationManager.AppSettings["PollingInterval"])); task.RunSynchronously(); My question is how to abort the Task safe? Is it enough with try { Task task = new Task( delegate { DoWork(); }); task.Wait(Convert.ToInt32(ConfigurationManager.AppSettings["PollingInterval"])); task.RunSynchronously(); } catch (ThreadAbortException threadAbortException) { // Clean up }

Amit Gupta · Answer

Sample code for cancellation a task using System; using System.Threading; using System.Threading.Tasks; class Program { static async Task Main() { var tokenSource2 = new CancellationTokenSource(); CancellationToken ct = tokenSource2.Token; var task = Task.Run(() => { // Were we already canceled? ct.ThrowIfCancellationRequested(); bool moreToDo = true ; while (moreToDo) { // Poll on this property if you have to do // other cleanup before throwing. if (ct.IsCancellationRequested) { // Clean up here, then... ct.ThrowIfCancellationRequested(); } } }, tokenSource2.Token); // Pass same token to Task.Run. tokenSource2.Cancel(); // Just continue on this thread, or await with try-catch: try { await task; } catch (OperationCanceledException e) { Console.WriteLine($ "{nameof(OperationCanceledException)} thrown with message: {e.Message}" ); } finally { tokenSource2.Dispose(); } Console.ReadKey(); } } Source: https://docs.microsoft.com/en-us/dotnet/standard/parallel-programming/task-cancellation

Amit Gupta · Answer

When you use a Task class then you can use CancellationToken to cancel the task.