如何使用 Console.WriteLine 打印变量

Question

以下代码演示了如何使用 sleep() 方法使线程暂停一段特定的时间。

当我运行此代码时：-

class Program
{
    class ThreadCreationProgram
    {
        public static void CallToChildThread()
        {
            Console.WriteLine("Child thread starts");

            // the thread is paused for 5000 milliseconds
            int sleepfor = 5000;

            Console.WriteLine("Child Thread Paused for {0} seconds");
            Thread.Sleep(sleepfor);
            Console.WriteLine("Child thread resumes");
        }

        static void Main(string[] args)
        {
            ThreadStart childref = new ThreadStart(CallToChildThread);
            Console.WriteLine("In Main: Creating the Child thread");
            Thread childThread = new Thread(childref);
            childThread.Start();
            Console.ReadKey();
        }
    }
}

我得到这个输出-

In Main: Creating the child thread
Child thread starts
Child thread paused for <0> seconds
Child thread resumes

但我期望的是：-

In Main: Creating the child thread
Child thread starts
Child thread paused for <5> seconds
Child thread resumes

我该怎么做有什么建议吗？

Answer 1

我认为这就是你错误的地方：

Console.WriteLine("Child Thread Paused for {0} seconds", (sleepfor/1000).ToString());

您没有指定该值的{0}来源。

此外，您还需要从毫秒计算到秒，这就是为什么/1000