C# implementation in the dialog box to add a CheckBox, and there countdown eight seconds off.

MessageBox
..........\Babu.Windows
..........\............\Babu.Windows.csproj
..........\............\Babu.Windows.csproj.user
..........\............\ClassDiagram1.cd
..........\............\Forms
..........\............\.....\MessageBox.Designer.cs
..........\............\.....\MessageBox.cs
..........\............\.....\MessageBox.resx
..........\............\.....\NativeMethods.cs
..........\............\.....\Resources
..........\............\.....\.........\MessageBox.bmp
..........\............\Properties
..........\............\..........\AssemblyInfo.cs
..........\............\..........\Resources.Designer.cs
..........\............\..........\Resources.resx
..........\............\Resources
..........\............\bin
..........\............\...\Debug
..........\............\...\.....\Babu.Windows.XML
..........\............\...\.....\Babu.Windows.dll
..........\............\...\.....\Babu.Windows.pdb
..........\............\...\Release
..........\............\obj
..........\............\...\Debug
..........\............\...\.....\Babu.Windows.Forms.MessageBox.resources
..........\............\...\.....\Babu.Windows.Properties.Resources.resources
..........\............\...\.....\Babu.Windows.csproj.FileListAbsolute.txt
..........\............\...\.....\Babu.Windows.dll
..........\............\...\.....\Babu.Windows.pdb
..........\............\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
..........\............\...\.....\GenerateResource-ResGen.read.1.tlog
..........\............\...\.....\GenerateResource-ResGen.write.1.tlog
..........\............\...\.....\TempPE
..........\............\...\.....\......\Properties.Resources.Designer.cs.dll
..........\CoderSky.Windows.Demonstration
..........\..............................\CoderSky.Demonstration.Windows.csproj
..........\..............................\CoderSky.Demonstration.Windows.csproj.user
..........\..............................\MainForm.Designer.cs
..........\..............................\MainForm.cs
..........\..............................\MainForm.resx
..........\..............................\MessageBoxDemoForm.Designer.cs
..........\..............................\MessageBoxDemoForm.cs
..........\..............................\MessageBoxDemoForm.resx
..........\..............................\Program.cs
..........\..............................\Properties
..........\..............................\..........\AssemblyInfo.cs
..........\..............................\..........\Resources.Designer.cs
..........\..............................\..........\Resources.resx
..........\..............................\..........\Settings.Designer.cs
..........\..............................\..........\Settings.settings
..........\..............................\bin
..........\..............................\...\Debug
..........\..............................\...\.....\Babu.Windows.dll
..........\..............................\...\.....\Babu.Windows.pdb
..........\..............................\...\.....\Babu.Windows.xml
..........\..............................\...\.....\csdemo.exe
..........\..............................\...\.....\csdemo.pdb
..........\..............................\...\.....\csdemo.vshost.exe
..........\..............................\...\Release
..........\..............................\obj
..........\..............................\...\Debug
..........\..............................\...\.....\CoderSky.Demonstration.Windows.MainForm.resources
..........\..............................\...\.....\CoderSky.Demonstration.Windows.MessageBoxDemoForm.resources
..........\..............................\...\.....\CoderSky.Demonstration.Windows.Properties.Resources.resources
..........\..............................\...\.....\CoderSky.Demonstration.Windows.csproj.FileListAbsolute.txt
..........\..............................\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
..........\..............................\...\.....\GenerateResource-ResGen.read.1.tlog
..........\..............................\...\.....\GenerateResource-ResG

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