聽說讀寫

using System;
using System.Threading;
public static class Program
{
    public static void Main()
    {
        // Create a new thread (defaults to foreground)
        Thread t = new Thread(Worker);
        // Make the thread a background thread
        t.IsBackground = false;
        t.Start(); // Start the thread
        // If t is a foreground thread, the application won't die for about 10 seconds
        // If t is a background thread, the application dies immediately
        Console.WriteLine("Returning from Main");
    }
    private static void Worker()
    {
        Thread.Sleep(10000); // Simulate doing 10 seconds of work
        // The line below only gets displayed if this code is executed by a foreground thread
        Console.WriteLine("Returning from Worker");
    }
}