MSDN示例中的变量“aTimer”来自哪里？

-2

我从https://msdn.microsoft.com/en-us/library/system.timers.timer.interval(v=vs.110).aspx MSDN示例中的变量“aTimer”来自哪里？

看例子

using System; 
using System.IO; 
using System.Collections.Generic; 
using System.Timers; 

public class Example 
{ 
    private static Timer aTimer; 
    private static List<String> eventlog; 
    private static int nEventsFired = 0; 
    private static DateTime previousTime; 

    public static void Main() 
    { 
     eventlog = new List<String>(); 

     StreamWriter sr = new StreamWriter(@".\Interval.txt"); 
     // Create a timer with a five millisecond interval. 
     aTimer = new Timer(5); 
     aTimer.Elapsed += OnTimedEvent; 
     // Hook up the Elapsed event for the timer. 
     aTimer.AutoReset = true; 
     sr.WriteLine("The timer should fire every {0} milliseconds.", 
        aTimer.Interval); 
     aTimer.Enabled = true; 


     Console.WriteLine("Press the Enter key to exit the program... "); 
     Console.ReadLine(); 
     foreach (var item in eventlog) 
      sr.WriteLine(item); 
     sr.Close(); 
     Console.WriteLine("Terminating the application..."); 
    } 

    private static void OnTimedEvent(Object source, ElapsedEventArgs e) 
    { 
     eventlog.Add(String.Format("Elapsed event at {0:HH':'mm':'ss.ffffff} ({1})", 
            e.SignalTime, 
            nEventsFired++ == 0 ? 
             0.0 : (e.SignalTime - previousTime).TotalMilliseconds)); 
     previousTime = e.SignalTime; 
     if (nEventsFired == 20) { 
      Console.WriteLine("No more events will fire..."); 
      aTimer.Enabled = false; 
     } 
    } 
} 
// The example writes output like the following to a file: 
//  The timer should fire every 5 milliseconds. 
//  Elapsed event at 08:42:49.370344 (0) 
//  Elapsed event at 08:42:49.385345 (15.0015) 
//  Elapsed event at 08:42:49.400347 (15.0015) 
//  Elapsed event at 08:42:49.415348 (15.0015) 
//  Elapsed event at 08:42:49.430350 (15.0015) 
//  Elapsed event at 08:42:49.445351 (15.0015) 
//  Elapsed event at 08:42:49.465353 (20.002) 
//  Elapsed event at 08:42:49.480355 (15.0015) 
//  Elapsed event at 08:42:49.495356 (15.0015) 
//  Elapsed event at 08:42:49.510358 (15.0015) 
//  Elapsed event at 08:42:49.525359 (15.0015) 
//  Elapsed event at 08:42:49.540361 (15.0015) 
//  Elapsed event at 08:42:49.555362 (15.0015) 
//  Elapsed event at 08:42:49.570364 (15.0015) 
//  Elapsed event at 08:42:49.585365 (15.0015) 
//  Elapsed event at 08:42:49.605367 (20.002) 
//  Elapsed event at 08:42:49.620369 (15.0015) 
//  Elapsed event at 08:42:49.635370 (15.0015) 
//  Elapsed event at 08:42:49.650372 (15.0015) 
//  Elapsed event at 08:42:49.665373 (15.0015)

，并很好奇其中aTimer来自，因为我没有看到它在文件中的任何地方定义。将此代码复制粘贴到Visual Studio时出现编译器错误。

来源

2016-06-28 user6048670

看到第一行，private static Timer aTimer;并在Main Mehtod –

中初始化什么是编译器错误？ – user3185569

我只想指出一些事情，在我知道的大多数文本编辑器中，CTRL + f允许您搜索文本，并且可以帮助查找给定变量的定义 – Darkrifts

它被定义：

private static Timer aTimer;

和分配：

aTimer = new Timer(5);

来源

2016-06-28 05:30:36 user3185569

using System; 
using System.IO; 
using System.Collections.Generic; 
using System.Timers; 

public class Example 
{ 
    private static Timer aTimer;

最后这个代码的行。按Ctrl + F和高亮显示全部（Mozilla Firefox），搜索定时器

来源

2016-06-28 05:31:04

static void Main是程序的访问点。

它会在一开始就执行。

它会为aTimer指定一个值。

public class Example 
{ 
    private static Timer aTimer; 
    ... 

    public static void Main() 
    { 
     ... 
     aTimer = new Timer(5); 
     ... 
    } 
    ... 
}

来源

2016-06-28 05:39:39 Tommy

MSDN示例中的变量“aTimer”来自哪里？

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