1.定義一個線程
var task1 = Task.Factory.StartNew(() => DoSomeWork())；
方法如下：
? View Code
??????? private static object DoSomeWork()
??????? {
??????????? Console.WriteLine("nihao ");
??????????? System.Threading.Thread.Sleep(3000);
??????????? Console.Write("nihao ");
??????????? return "xiexie";
??????? }

2.多線程執行后，執行另一個方法
? var task1 = Task.Factory.StartNew(() => DoSomeWork()).ContinueWith(
???????????????? task => { Console.WriteLine(task.Result.ToString()); }).ContinueWith(
???????????????? task => { Console.WriteLine(task.Result.ToString()); });
3.等待所有線程結束
var task1 = Task.Factory.StartNew(() => DoSomeWork());
var task2 = Task.Factory.StartNew(() => DoSomeWork());
var task3 = Task.Factory.StartNew(() => DoSomeWork());
Task.WaitAll(task1, task2, task3);
4.等待其中一個線程結束
var task1 = Task.Factory.StartNew(() => DoSomeWork());
var task2 = Task.Factory.StartNew(() => DoSomeWork());
var task3 = Task.Factory.StartNew(() => DoSomeWork());
Task.WaitAny(task1, task2, task3);
5.等待所有線程結束執行的方法
var task1 = Task.Factory.StartNew(() =>
{
??? Thread.Sleep(3000);
??? return "dummy value 1";
});
var task2 = Task.Factory.StartNew(() =>
{
??? Thread.Sleep(3000);
??? return "dummy value 2";
});
var task3 = Task.Factory.StartNew(() =>
{
??? Thread.Sleep(3000);
??? return "dummy value 3";
});
Task.Factory.ContinueWhenAll(new[] { task1, task2, task3 }, tasks =>
{
??? foreach (Task<string> task in tasks)
??? {
??????? Console.WriteLine(task.Result);
??? }
});

總結

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