程式碼：來源

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Diagnostics;
 4 using System.Linq;
 5 using System.Runtime.InteropServices;
 6 using System.Text;
 7 using System.Threading;
 8 using System.Threading.Tasks;
 9 using Test_Roslyn.JSON_MODEL;
10 
11 namespace C_Sharp_Test
12
 
 {
13     class Program
14     {
15 
16         static async Task Main(string[] args)
17         {
18             Console.WriteLine("Main非同步演示開始~~~~~");
19             Stopwatch stopwatch = Stopwatch.StartNew();
20             List<Task> tasks = new List<Task>
21             {
22             Bash(),//
 
洗澡
23             };
24             tasks.Add(BreakFast());//吃早餐
25             tasks.Add(WashClothes());//洗衣服
26             tasks.Add(WriteArticle());//寫文章
27             tasks.Add(WritingCode());//寫程式碼
28             await Task.WhenAll(tasks);
29             Console.WriteLine("Main非同步演示結束~~~~~共用時{0}秒！", stopwatch.ElapsedMilliseconds / 1000
 
);
30             Console.ReadKey();
31         }
32 
33         private static async Task Bash()
34         {
35             Console.WriteLine("洗澡開始~~~~~");
36             await Task.Delay(1 * 1000);//模擬過程
37             Console.WriteLine("洗澡結束~~~~~");
38         }
39 
40         private static async Task BreakFast()
41         {
42             Console.WriteLine("吃早餐開始~~~~~");
43             await Task.Delay(1 * 1000);//模擬過程
44             Console.WriteLine("吃早餐結束~~~~~");
45         }
46 
47         private static async Task WashClothes()
48         {
49             Console.WriteLine("洗衣服開始~~~~~");
50             await Task.Delay(6 * 1000);//模擬過程
51             Console.WriteLine("洗衣服結束~~~~~");
52 
53         }
54 
55         private static async Task WriteArticle()
56         {
57             Console.WriteLine("寫文章開始~~~~~");
58             await Task.Delay(20 * 1000);//模擬過程
59             Console.WriteLine("寫文章結束~~~~~");
60         }
61 
62         private static async Task WritingCode()
63         {
64             Console.WriteLine("寫程式碼開始~~~~~");
65             await Task.Delay(12 * 1000);//模擬過程
66             Console.WriteLine("寫程式碼結束~~~~~");
67         }
68     }
69 }

例項：