C# example for using delegates and events.

VendingMachine.sln
..............\App.xaml
..............\App.xaml.cs
..............\bin
..............\...\Debug
..............\...\.....\drinks.xml
..............\...\.....\VendingMachine.exe
..............\...\.....\VendingMachine.pdb
..............\...\.....\VendingMachine.vshost.exe
..............\...\.....\VendingMachine.vshost.exe.manifest
..............\...\.....\VendingMachine.XML
..............\drinks.xml
..............\obj
..............\...\Debug
..............\...\.....\App.g.cs
..............\...\.....\Refactor
..............\...\.....\TempPE
..............\...\.....\VendingMachine.csproj.FileListAbsolute.txt
..............\...\.....\VendingMachine.csproj.GenerateResource.Cache
..............\...\.....\VendingMachine.exe
..............\...\.....\VendingMachine.g.resources
..............\...\.....\VendingMachine.pdb
..............\...\.....\VendingMachine.Properties.Resources.resources
..............\...\.....\VendingMachine_MarkupCompile.cache
..............\...\.....\Window1.baml
..............\...\.....\Window1.g.cs
..............\Properties
..............\..........\AssemblyInfo.cs
..............\..........\Resources.Designer.cs
..............\..........\Resources.resx
..............\..........\Settings.Designer.cs
..............\..........\Settings.settings
..............\VendingMachine.csproj
..............\VendingMachine.csproj.user
..............\Window1.xaml
..............\Window1.xaml.cs

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