C#多线程---委托实现异步

 1 using System;
 2 using System.Threading;
 3 
 4 namespace DelegateBeginInvoke
 5 {
 6     class Program
 7     {
 8         delegate string MyDelegate(string str1, string str2);
 9         static void Main(string[] args)
10         {
11             MyDelegate del = new MyDelegate(AsyncMethod);
12             string str1 = "123";
13             string str2 = "456";
14            IAsyncResult result =  del.BeginInvoke(str1, str2,null, null);
15             Console.WriteLine("Delegate begininvoke called");
16             string myResult = del.EndInvoke(result);
17             Console.WriteLine($"Result is {myResult}");
18 
19         }
20         private static string AsyncMethod(string str1, string str2)
21         {
22             PrintThreadInfo("Print info in AsyncMethod");
23             string myString = str1 + str2;
24             Thread.Sleep(6000);
25             return myString;
26         }
27         private static void PrintThreadInfo(string info)
28         {
29             Console.WriteLine(info);
30             Console.WriteLine($"ThreadId:{Thread.CurrentThread.ManagedThreadId}\nIsBackgroundThread:{Thread.CurrentThread.IsBackground}\nIsThreadPoolThread:{Thread.CurrentThread.IsThreadPoolThread}");
31             int workerThread = 0;
32             int ioThread = 0;
33             ThreadPool.GetMaxThreads(out workerThread, out ioThread);
34             Console.WriteLine($"MaxWorkerThread:{workerThread}\nMaxIoThread:{ioThread}");
35             int workerThreadAvailable = 0;
36             int ioThreadAvailable = 0;
37             ThreadPool.GetAvailableThreads(out workerThreadAvailable, out ioThreadAvailable);
38             Console.WriteLine($"AvailableWorkerThread:{workerThreadAvailable}\nAvailableIoThread:{ioThreadAvailable}");
39         }
40     }
41 }