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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
namespace ConsoleApplication3
{
class
Program
{
static
void Main(string[] args)
{
Console.WriteLine($”主程序头，当前线程ID：{Thread.CurrentThread.ManagedThreadId}“);
CallSayHiAysnc(“Jack”);
Console.WriteLine($”主程序尾，当前线程ID：{Thread.CurrentThread.ManagedThreadId}“);
Console.ReadKey();
}
static
async
void CallSayHiAysnc(string name)
{
Console.WriteLine($”异步调用头，当前线程ID：{Thread.CurrentThread.ManagedThreadId}“);
string result = await SayHiAsync(name);
Console.WriteLine($”异步调用尾，当前线程ID：{Thread.CurrentThread.ManagedThreadId}“);
Console.WriteLine(result);
}
static
Task<string> SayHiAsync(string name)
{
return
Task.Run<string>(()=> { return SayHi(name); });
}
static
string SayHi(string name)
{
Thread.Sleep(10000);
Console.WriteLine($”SayHi已执行，当前线程ID：{Thread.CurrentThread.ManagedThreadId}“);
return
$”Hi,{name}“;
}
}
}
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