Description: exam system
默认情况下，.NET的随机数是根据系统时间来生成的，如果电脑速度很快的话，生成的随机数就会一样。
Random rnd = new Random()
int rndNum = rnd.Next() //int 取值范围内的随机数
int rndNum = rnd.Next(10) //得0~9的随机数
int rndNum = rnd.Next(10,20) //得10~19的随机数
int rndNum = rnd.NextDouble() //得0~1的随机数
To Search:
File list (Check if you may need any files):
1\51Aspx源码必读 .txt
.\App.xaml
.\App.xaml.cs
.\bin\Debug\Sounds\alarm_1.mp3
.\...\.....\......\siren_1.mp3
.\...\.....\WpfTimer.application
.\...\.....\WpfTimer.exe
.\...\.....\WpfTimer.exe.manifest
.\...\.....\WpfTimer.pdb
.\...\.....\WpfTimer.vshost.application
.\...\.....\WpfTimer.vshost.exe
.\...\.....\WpfTimer.vshost.exe.manifest
.\Images\TIO_Timer-150x150.png
.\MainWindow.xaml
.\MainWindow.xaml.cs
.\obj\x86\Debug\App.g.cs
.\...\...\.....\App.g.i.cs
.\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
.\...\...\.....\GenerateResource.read.1.tlog
.\...\...\.....\GenerateResource.write.1.tlog
.\...\...\.....\MainWindow.baml
.\...\...\.....\MainWindow.g.cs
.\...\...\.....\MainWindow.g.i.cs
.\...\...\.....\WpfTimer.application
.\...\...\.....\WpfTimer.csproj.FileListAbsolute.txt
.\...\...\.....\WpfTimer.exe
.\...\...\.....\WpfTimer.exe.manifest
.\...\...\.....\WpfTimer.g.resources
.\...\...\.....\WpfTimer.pdb
.\...\...\.....\WpfTimer.Properties.Resources.resources
.\...\...\.....\WpfTimer.TrustInfo.xml
.\...\...\.....\WpfTimer_Content.g.cs
.\...\...\.....\WpfTimer_Content.g.i.cs
.\...\...\.....\WpfTimer_MarkupCompile.cache
.\...\...\.....\WpfTimer_MarkupCompile.i.cache
.\Properties\app.manifest
.\..........\AssemblyInfo.cs
.\..........\Resources.Designer.cs
.\..........\Resources.resx
.\..........\Settings.Designer.cs
.\..........\Settings.settings
.\Sounds\alarm_1.mp3
.\......\siren_1.mp3
.\timer.ico
.\WpfTimer.csproj
.\WpfTimer.csproj.vspscc
.\WpfTimer.sln
.\WpfTimer.suo
.\WpfTimer_TemporaryKey.pfx
.\bin\Debug\Sounds
.\obj\x86\Debug
.\bin\Debug
.\obj\x86
.\bin
.\Images
.\obj
.\Properties
.\Sounds
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