参考:
https://docs.microsoft.com/zh-cn/dotnet/api/system.threading.tasks.task?view=netframework-4.8#definition
“Task 类表示不返回值并且通常以异步方式执行的单个操作”
来自参考的示例代码:
using System; using System.Threading; using System.Threading.Tasks; class Example { static void Main() { Action<object> action = (object obj) => { Console.WriteLine("Task={0}, obj={1}, Thread={2}", Task.CurrentId, obj, Thread.CurrentThread.ManagedThreadId); }; // Create a task but do not start it. Task t1 = new Task(action, "alpha"); // Construct a started task Task t2 = Task.Factory.StartNew(action, "beta"); // Block the main thread to demonstrate that t2 is executing t2.Wait(); // Launch t1 t1.Start(); Console.WriteLine("t1 has been launched. (Main Thread={0})", Thread.CurrentThread.ManagedThreadId); // Wait for the task to finish. t1.Wait(); // Construct a started task using Task.Run. String taskData = "delta"; Task t3 = Task.Run( () => {Console.WriteLine("Task={0}, obj={1}, Thread={2}", Task.CurrentId, taskData, Thread.CurrentThread.ManagedThreadId); }); // Wait for the task to finish. t3.Wait(); // Construct an unstarted task Task t4 = new Task(action, "gamma"); // Run it synchronously t4.RunSynchronously(); // Although the task was run synchronously, it is a good practice // to wait for it in the event exceptions were thrown by the task. t4.Wait(); } } // The example displays output like the following: // Task=1, obj=beta, Thread=3 // t1 has been launched. (Main Thread=1) // Task=2, obj=alpha, Thread=4 // Task=3, obj=delta, Thread=3 // Task=4, obj=gamma, Thread=1