C#使用timer实现的简单闹钟程序
本文实例讲述了C#使用timer实现的简单闹钟程序。分享给大家供大家参考。具体如下：
当我在电脑上工作，我经常会被一些东西吸引，比如某宝，结果三个小时过去了我都完全没有注意到。所以我通过C#做了一个简单闹钟程序，这个小程序主要使用C#Timer对象，让用户设定一个倒计时的时长，如果时间到了，就播放一个wav音频文件（也就是闹铃）。
我一直试图保持这个timer的简单性，但我还是添加了一些额外的功能，在状态栏中显示一个通知图标。
通过这个小应用你也可以了解到C#中timer定时器的一些简单用法。
usingSystem;
usingSystem.Drawing;
usingSystem.Collections;
usingSystem.ComponentModel;
usingSystem.Windows.Forms;
usingSystem.Data;
usingSystem.Threading;
usingSystem.Timers;
usingSystem.IO;
usingSystem.Reflection;
namespacetimerAlarm
{
publicclassTimerForm:System.Windows.Forms.Form
{
//ControlsandComponents
privateSystem.Windows.Forms.TextBoxtimerInput;
privateSystem.Windows.Forms.ButtonStartButton;
privateSystem.Windows.Forms.ButtonResetButton;
privateSystem.ComponentModel.IContainercomponents;
//Timerandassociatedvariables
privateSystem.Timers.TimertimerClock=newSystem.Timers.Timer();
privateintclockTime=0;
privateintalarmTime=0;
publicTimerForm()
{
InitializeComponent();
InitializeTimer();
}
protectedoverridevoidDispose(booldisposing)
{
if(disposing)
{
if(components!=null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}
#regionWindowsFormDesignergeneratedcode
///<SUMMARY>
///RequiredmethodforDesignersupport-donotmodify
///thecontentsofthismethodwiththecodeeditor.
///</SUMMARY>
privatevoidInitializeComponent()
{
this.components=newSystem.ComponentModel.Container();
System.Resources.ResourceManagerresources=newSystem.
Resources.ResourceManager(typeof(TimerForm));
this.timerInput=newSystem.Windows.Forms.TextBox();
this.StartButton=newSystem.Windows.Forms.Button();
this.ResetButton=newSystem.Windows.Forms.Button();
this.SuspendLayout();
//
//timerInput
//
this.timerInput.Location=newSystem.Drawing.Point(12,13);
this.timerInput.Name="timerInput";
this.timerInput.Size=newSystem.Drawing.Size(50,20);
this.timerInput.TabIndex=0;
this.timerInput.Text="00:00:00";
//
//StartButton
//
this.StartButton.FlatStyle=System.Windows.Forms.
FlatStyle.System;
this.StartButton.Location=newSystem.Drawing.Point(75,11);
this.StartButton.Name="StartButton";
this.StartButton.TabIndex=1;
this.StartButton.Text="Start";
this.StartButton.Click+=newSystem.EventHandler
(this.StartButton_Click);
//
//ResetButton
//
this.ResetButton.FlatStyle=System.Windows.Forms.
FlatStyle.System;
this.ResetButton.Location=newSystem.Drawing.Point(161,11);
this.ResetButton.Name="ResetButton";
this.ResetButton.TabIndex=2;
this.ResetButton.Text="Reset";
this.ResetButton.Click+=new
System.EventHandler(this.ResetButton_Click);
//
//TimerForm
//
this.AutoScaleBaseSize=newSystem.Drawing.Size(5,13);
this.ClientSize=newSystem.Drawing.Size(247,46);
this.Controls.AddRange(newSystem.Windows.Forms.Control[]{
this.ResetButton,
this.StartButton,
this.timerInput});
this.FormBorderStyle=System.Windows.Forms.
FormBorderStyle.FixedSingle;
this.Icon=((System.Drawing.Icon)(resources.
GetObject("$this.Icon")));
this.MaximizeBox=false;
this.Name="TimerForm";
this.StartPosition=System.Windows.Forms.
FormStartPosition.CenterScreen;
this.Text="AlarmTimer";
this.Resize+=newSystem.EventHandler(this.
TimerForm_Resized);
this.ResumeLayout(false);
}
#endregion
publicvoidInitializeTimer()
{
this.timerClock.Elapsed+=newElapsedEventHandler(OnTimer);
this.timerClock.Interval=1000;
this.timerClock.Enabled=true;
}
[STAThread]
staticvoidMain()
{
Application.Run(newTimerForm());
}
privatevoidTimerForm_Resized(objectsender,System.EventArgse)
{
if(this.WindowState==FormWindowState.Minimized)
{
this.Hide();
}
}
privatevoidStartButton_Click(objectsender,System.EventArgse)
{
this.clockTime=0;
inputToSeconds(this.timerInput.Text);
}
privatevoidResetButton_Click(objectsender,System.EventArgse)
{
try
{
this.clockTime=0;
this.alarmTime=0;
this.timerInput.Text="00:00:00";
}
catch(Exceptionex)
{
MessageBox.Show("ResetButton_Click():"+ex.Message);
}
}
publicvoidOnTimer(Objectsource,ElapsedEventArgse)
{
try
{
this.clockTime++;
intcountdown=this.alarmTime-this.clockTime;
if(this.alarmTime!=0)
{
this.timerInput.Text=secondsToTime(countdown);
}
//SoundAlarm
if(this.clockTime==this.alarmTime)
{
MessageBox.Show("PlaySound");
}
}
catch(Exceptionex)
{
MessageBox.Show("OnTimer():"+ex.Message);
}
}
privatevoidinputToSeconds(stringtimerInput)
{
try
{
string[]timeArray=newstring[3];
intminutes=0;
inthours=0;
intseconds=0;
intoccurence=0;
intlength=0;
occurence=timerInput.LastIndexOf(":");
length=timerInput.Length;
//Checkforinvalidinput
if(occurence==-1||length!=8)
{
MessageBox.Show("InvalidTimeFormat.");
ResetButton_Click(null,null);
}
else
{
timeArray=timerInput.Split(':');
seconds=Convert.ToInt32(timeArray[2]);
minutes=Convert.ToInt32(timeArray[1]);
hours=Convert.ToInt32(timeArray[0]);
this.alarmTime+=seconds;
this.alarmTime+=minutes*60;
this.alarmTime+=(hours*60)*60;
}
}
catch(Exceptione)
{
MessageBox.Show("inputToSeconds():"+e.Message);
}
}
publicstringsecondsToTime(intseconds)
{
intminutes=0;
inthours=0;
while(seconds>=60)
{
minutes+=1;
seconds-=60;
}
while(minutes>=60)
{
hours+=1;
minutes-=60;
}
stringstrHours=hours.ToString();
stringstrMinutes=minutes.ToString();
stringstrSeconds=seconds.ToString();
if(strHours.Length<2)
strHours="0"+strHours;
if(strMinutes.Length<2)
strMinutes="0"+strMinutes;
if(strSeconds.Length<2)
strSeconds="0"+strSeconds;
returnstrHours+":"+strMinutes+":"+strSeconds;
}
}
}
完整实例代码点击此处本站下载。
希望本文所述对大家的C#程序设计有所帮助。