如何让C#程序在执行中暂停一段时间
在线程中,如果要暂停一定的时间,可以使用Thread的Sleep方吵散法,让线程暂停。在微软新的win8API中,已经用Task来实现原来用线程实现的许多功能,同样,Task也有Delay方法,让程序暂停一定的时间。
以下程序利用System.Threading.Timer让程序每隔间隔的时间执行回正顷调方法:
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace TimerApp{
class Program{
static void Main(string[] args){
Console.WriteLine("***** Working with Timer type *****/n");
// Create the delegate for the Timer type.
TimerCallback timeCB = new TimerCallback(PrintTime);
// Establish timer settings.
Timer t = new Timer(
timeCB, // The TimerCallback delegate type.
"Hello From Main", // Any info to pass into the called method (null for no info).
5000, // Amount of time to wait before starting.
Timeout.Infinite); //一秒钟调用一次 Interval of time between calls (in milliseconds).
Console.WriteLine("Hit key to terminate...");
Console.ReadLine();}
static void PrintTime(object state){
Console.WriteLine("Time is: {0}, Param is: {1}",
DateTime.Now.ToLongTimeString(), state.ToString());}
如果把时间间隔1000改成 Timeout.Infinite,这样回调方法PrintTime只会在1秒之后调用一次。
除了Threading下有个Timer类之外,.net中还有另一个Timer,就是System.Timer名称空间下的Timer。此Timer的用法和Threading下的Timer不太相同。
System.Timers.Timer t2 = new System.Timers.Timer(100);
t2.Elapsed += t2_Elapsed;
//t1.AutoReset = false;
t2.Enabled = true;}}
void t2_Elapsed(object sender, System.Timers.ElapsedEventArgs e){}
其中AutoReset属性的升清氏含义是是否在每次时间间隔到了都触发Elapsed事件还是只触发一次(t1.AutoReset = false;)。
解决此类问题的一个小例子(实现在窗体上相隔指定时间显示字幕)
//创建StopNtime类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace 程序运行暂停器{
class StopNtime{
public StopNtime(){
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;//,跨线程调用控件必加上去 }
private int stopTime = 0;//暂停的时间
ThreadStart myStart;
Thread TheStop;
public readonly object MyLockWord = new object();
public void stopWay(int stopTime){
this.stopTime = stopTime;
myStart = new ThreadStart(this .ToStop );
TheStop = new Thread(myStart );
TheStop.Start();
private void ToStop(){
lock (MyLockWord){
Thread.Sleep(this .stopTime );
Thread.CurrentThread.Abort();
//主窗体代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading ;
using System.Collections;
namespace 程序运行暂停器{
public partial class Form1 : Form{
public Form1(){
InitializeComponent();}
private void Form1_Load(object sender, EventArgs e){
label1.Text = "";
Thread f = new Thread(f1 );
f.Start();}
string MyWord = "问题:1+1=? ...\n答案是:2 ...";
private void f1(){
StopNtime mmm = new StopNtime();
foreach (char m in MyWord){
lock (mmm.MyLockWord ){
label1.Text += m.ToString();
mmm.stopWay(300);
//运行结果