我将如何更改我的程序，以便在方法正确后计时器停止

Posted 2023-04-12

【中文标题】我将如何更改我的程序，以便在方法正确后计时器停止

【英文标题】：How would I change my program so the timer rests after the method is correct

【发布时间】：2019-07-02 12:37:11

【问题描述】：

一旦方法正确，我将如何重置 30 秒，到目前为止，在每种方法正确之后，我都会中止线程，然后在下一个方法中启动一个新线程并启动它，但控制台仍然在 30 秒后关闭，而不是重置计时器？ 我假设这是秒表计时器问题？

namespace Calculator


    class Program
    

        static ThreadStart ThreadStart = new ThreadStart(Counter);
        static Thread Thread = new Thread(ThreadStart)
        
            Priority = ThreadPriority.Highest
        ;
        static void Main(string[] args)
        

            Console.WriteLine("INSTRUCTIONS - You have 30 seconds to answer each question correctly, once you get the question right the next question will appear," +
            "if you get a question wrong the console will display INCORRECT and you will have until the end of the 30 seconds to answer it correctly.");
            //These are the instructions
            Thread.Start();

            q1();
            q2();
        

        static Stopwatch timer = Stopwatch.StartNew();
        static void Counter()
        
            if (timer.ElapsedMilliseconds < 30000)
            
                Thread.Sleep(1000);
                Counter();
            
            else
            
                Console.WriteLine("Too late");

                Environment.Exit(0);
            

        

        static void q1() //Return type is a string as a string prompting the user will ask them to try again
        
            Console.WriteLine("1+1"); //This is the question
            int answer = Convert.ToInt32(Console.ReadLine());// Can't apply int to a readline, so convert the useres input to an int so you can apply an int variable

            if (answer == 2) //If the users input is equal to 2 
            
                Console.WriteLine("Correct");//Tells the user that they are correct
                Thread.Abort();
            
            else
            
                Console.WriteLine("Try again");
                q1();
            
        
        static void q2() //Return type is a string as a string prompting the user will ask them to try again
        
            Thread Threadq2 = new Thread(ThreadStart);
            Threadq2.Start();
            Console.WriteLine("2+2"); //This is the question
            int answer = Convert.ToInt32(Console.ReadLine());// Can't apply int to a readline, so convert the useres input to an int so you can apply an int variable

            if (answer == 4) //If the users input is equal to 2 
            
                Console.WriteLine("Correct");//Tells the user that they are correct
                Thread.Abort();
            
            else
            
                Console.WriteLine("Try again");
                q1();
            
        
    

【参考方案1】：

首先你在这里并不需要一个线程

其次，Timer 可能不是您想要的，而且您似乎会找到一个更简单的测量时间的解决方案。

public static DateTime _starTime;

...

Console.WriteLine("INSTRUCTIONS - You have 30 seconds to answer each question correctly, once you get the question right the next question will appear," +
        "if you get a question wrong the console will display INCORRECT and you will have until the end of the 30 seconds to answer it correctly.");

_starTime = DateTime.Now();

...

那么当你想检查时（即在用户回答后）你可以做这样的事情

var seconds = DateTime.Now.Subtract(_starTime).TotalSeconds;

If(seconds > 30)

   // game over

【参考方案2】：

为什么不将timer.Restart(); 放在 q1/q2 方法的开头？这样，每次您调用它们时计时器都会重新启动

【参考方案3】：

尝试使用Timer 并将间隔设置为 30 秒。在 Elapsed 事件中，只需关闭控制台即可。

private static System.Timers.Timer timer = new System.Timers.Timer(2000);
        static void Main(string[] args)
        
            timer.Elapsed += Timer_Elapsed;
            timer.Start();

            // show instructions
            while (true)
            
               string answer = Console.ReadLine();
                if (answer == "2") // check the answer somehow
                
                    timer.Stop(); // and restart the timer
                    timer.Start();
                    // show next question
                
            

        

        private static void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        
            Console.WriteLine("Too late");
            timer.Elapsed -= Timer_Elapsed;
            System.Threading.Thread.Sleep(2000);
            Environment.Exit(0);