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;

namespace?倒計時器
{
????public?partial?class?Form1?:?Form
????{
????????int?count=0;//用于定時器計數(shù)
????????int?time_m=0;//存儲設(shè)定的定時值
????????public?Form1（）
????????{
????????????InitializeComponent（）;

????????}

????????private?void?Form1_Load_1（object?sender?EventArgs?e）
????????{
????????????int?i;
????????????for?（i?=?1;?i?????????????{
????????????????comboBox1.Items.Add（i.ToString（）?+?“?秒“）;//初始化下拉框內(nèi)容（“秒”前加一個空格，防止讀取時1位數(shù)字出錯）
????????????}
????????????comboBox1.Text=“1?秒“;
????????}
????????
???????private?void?timer1_Tick（object?sender?EventArgs?e）
????????{
????????????count++;//記錄當(dāng)前秒
????????????label3.Text?=?（time_m?-?count）.ToString（）?+?“秒“;//顯示剩余時間
????????????progressBar1.Value?=?count;//設(shè)置進(jìn)度條進(jìn)度
????????????if?（count?==?time_m）
????????????{
????????????????timer1.Stop（）;//時間到，停止計時，不能放在MessageBox后面
????????????????System.Media.SystemSounds.Asterisk.Play（）;//提示音
????????????????MessageBox.Show（“時間到了！““提示“）;//彈出提示框
????????????????count?=?0;
????????????}
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????????string?str?=?comboBox1.Text;//將下拉框內(nèi)容添加到一個變量中
????????????????time_m?=?Convert.ToInt16（str.Substring（0?2））;//得到設(shè)定定時值（整型）
????????????????//time_m?=?int.Parse（str.Substring（0?2））;//書中的等價方法
????????????????progressBar1.Maximum?=?time_m;//進(jìn)度條最大數(shù)值
????????????????timer1.Start（）;//開始計時
????????}

????????
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1902??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.application

?????文件???????9728??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.exe

?????文件???????3036??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.exe.manifest

?????文件??????32256??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.pdb

?????文件???????1902??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.vshost.application

?????文件??????11600??2016-04-29?00:27??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.vshost.exe

?????文件???????3036??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\bin\Debug\倒計時器.vshost.exe.manifest

?????文件???????1926??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\Form1.cs

?????文件???????5387??2015-12-12?00:18??倒計時器（帶進(jìn)度條）\倒計時器\Form1.Designer.cs

?????文件???????6011??2015-12-12?00:18??倒計時器（帶進(jìn)度條）\倒計時器\Form1.resx

?????文件???????4440??2015-12-13?17:48??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????6535??2016-04-29?00:27??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件????????558??2016-02-19?12:55??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\GenerateResource.read.1.tlog

?????文件???????1290??2016-02-19?12:55??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\GenerateResource.write.1.tlog

?????文件???????7897??2015-12-13?22:00??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\ResolveAssemblyReference.cache

?????文件???????1902??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.application

?????文件???????3342??2016-04-29?00:27??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.csproj.FileListAbsolute.txt

?????文件???????9728??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.exe

?????文件???????3036??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.exe.manifest

?????文件????????180??2016-02-19?12:55??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.Form1.resources

?????文件??????32256??2016-02-19?13:02??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.pdb

?????文件????????180??2016-02-19?12:55??倒計時器（帶進(jìn)度條）\倒計時器\obj\x86\Debug\倒計時器.Properties.Resources.resources

?????文件????????493??2015-12-11?22:54??倒計時器（帶進(jìn)度條）\倒計時器\Program.cs

?????文件???????1366??2015-12-11?22:52??倒計時器（帶進(jìn)度條）\倒計時器\Properties\AssemblyInfo.cs

?????文件???????2875??2015-12-11?22:52??倒計時器（帶進(jìn)度條）\倒計時器\Properties\Resources.Designer.cs

?????文件???????5612??2015-12-11?22:52??倒計時器（帶進(jìn)度條）\倒計時器\Properties\Resources.resx

?????文件???????1098??2015-12-11?22:52??倒計時器（帶進(jìn)度條）\倒計時器\Properties\Settings.Designer.cs

?????文件????????249??2015-12-11?22:52??倒計時器（帶進(jìn)度條）\倒計時器\Properties\Settings.settings

?????文件???????5720??2015-12-13?22:00??倒計時器（帶進(jìn)度條）\倒計時器\publish\Application?Files\倒計時器_1_0_0_0\倒計時器.application

?????文件???????9728??2015-12-13?22:00??倒計時器（帶進(jìn)度條）\倒計時器\publish\Application?Files\倒計時器_1_0_0_0\倒計時器.exe.deploy

............此處省略23個文件信息