1         static void Main(string[] args)
 2         {            
 3             CreateFish();
 4             Console.ReadKey();   //这里要暂停一下，不然CreateFish()方法执行完程序就结束了，看不到效果       
 5         }
 6         private static void CreateFish()
 7         {
 8             //using System.ComponentModel
 9             BackgroundWorker worker = new BackgroundWorker();
10             //DoWork:调用RunWorkerAsync()时发生，并且传递DoWorkEventArgs参数
11             worker.DoWork += delegate (object sender, DoWorkEventArgs e)
12             {
13                 Fish fish = Nature<Fish>.Create();
14                 fish.Name = "Mermaid";
15                 fish.Age = 18;
16                 e.Result = fish;
17             };
18             //后台操作完成或中途终止会触发该事件
19             worker.RunWorkerCompleted += delegate (object sender, RunWorkerCompletedEventArgs e)
20             {
21                 if (e.Error != null)
22                 {
23                     Console.WriteLine("发生异常，异常信息：" + e.Error.Message);
24                     return;
25                 }
26                 Fish fish = e.Result as Fish;
27                 Console.WriteLine($"自然生成一条鱼，名称：{fish.Name},年龄：{fish.Age}");
28             };
29             worker.RunWorkerAsync(); //开始执行后台操作
30         }