File list (Check if you may need any files):
PluginPrototype\Host
PluginPrototype\Host\App.ico
PluginPrototype\Host\AssemblyInfo.cs
PluginPrototype\Host\bin
PluginPrototype\Host\bin\Debug
PluginPrototype\Host\bin\Debug\Host.exe
PluginPrototype\Host\bin\Debug\PluginInterface.dll
PluginPrototype\Host\bin\Debug\Plugins
PluginPrototype\Host\bin\Debug\Plugins\Plugin1.dll
PluginPrototype\Host\bin\Debug\Plugins\Plugin2.dll
PluginPrototype\Host\bin\Debug\Plugins\Plugin3.dll
PluginPrototype\Host\bin\Debug\Plugins\Plugin4.dll
PluginPrototype\Host\frmFeedback.cs
PluginPrototype\Host\frmFeedback.resx
PluginPrototype\Host\frmMain.cs
PluginPrototype\Host\frmMain.resx
PluginPrototype\Host\Global.cs
PluginPrototype\Host\Host.csproj
PluginPrototype\Host\Host.csproj.user
PluginPrototype\Host\obj
PluginPrototype\Host\obj\Debug
PluginPrototype\Host\obj\Debug\temp
PluginPrototype\Host\obj\Debug\TempPE
PluginPrototype\Host\PluginServices.cs
PluginPrototype\Plugin1
PluginPrototype\Plugin1\AssemblyInfo.cs
PluginPrototype\Plugin1\bin
PluginPrototype\Plugin1\bin\Debug
PluginPrototype\Plugin1\bin\Debug\Plugin1.dll
PluginPrototype\Plugin1\ctlMain.cs
PluginPrototype\Plugin1\ctlMain.resx
PluginPrototype\Plugin1\obj
PluginPrototype\Plugin1\obj\Debug
PluginPrototype\Plugin1\obj\Debug\temp
PluginPrototype\Plugin1\obj\Debug\TempPE
PluginPrototype\Plugin1\Plugin1.cs
PluginPrototype\Plugin1\Plugin1.csproj
PluginPrototype\Plugin1\Plugin1.csproj.user
PluginPrototype\Plugin2
PluginPrototype\Plugin2\AssemblyInfo.cs
PluginPrototype\Plugin2\bin
PluginPrototype\Plugin2\bin\Debug
PluginPrototype\Plugin2\bin\Debug\Plugin2.dll
PluginPrototype\Plugin2\ctlMain.cs
PluginPrototype\Plugin2\ctlMain.resx
PluginPrototype\Plugin2\obj
PluginPrototype\Plugin2\obj\Debug
PluginPrototype\Plugin2\obj\Debug\temp
PluginPrototype\Plugin2\obj\Debug\TempPE
PluginPrototype\Plugin2\Plugin2.cs
PluginPrototype\Plugin2\Plugin2.csproj
PluginPrototype\Plugin2\Plugin2.csproj.user
PluginPrototype\Plugin3
PluginPrototype\Plugin3\AssemblyInfo.cs
PluginPrototype\Plugin3\bin
PluginPrototype\Plugin3\bin\Debug
PluginPrototype\Plugin3\bin\Debug\Plugin3.dll
PluginPrototype\Plugin3\ctlMain.cs
PluginPrototype\Plugin3\ctlMain.resx
PluginPrototype\Plugin3\obj
PluginPrototype\Plugin3\obj\Debug
PluginPrototype\Plugin3\obj\Debug\temp
PluginPrototype\Plugin3\obj\Debug\TempPE
PluginPrototype\Plugin3\Plugin3.cs
PluginPrototype\Plugin3\Plugin3.csproj
PluginPrototype\Plugin3\Plugin3.csproj.user
PluginPrototype\Plugin4
PluginPrototype\Plugin4\AssemblyInfo.cs
PluginPrototype\Plugin4\bin
PluginPrototype\Plugin4\bin\Debug
PluginPrototype\Plugin4\bin\Debug\Plugin4.dll
PluginPrototype\Plugin4\ctlMain.cs
PluginPrototype\Plugin4\ctlMain.resx
PluginPrototype\Plugin4\obj
PluginPrototype\Plugin4\obj\Debug
PluginPrototype\Plugin4\obj\Debug\temp
PluginPrototype\Plugin4\obj\Debug\TempPE
PluginPrototype\Plugin4\Plugin4.csproj
PluginPrototype\Plugin4\Plugin4.csproj.user
PluginPrototype\PluginInterface
PluginPrototype\PluginInterface\AssemblyInfo.cs
PluginPrototype\PluginInterface\bin
PluginPrototype\PluginInterface\bin\Debug
PluginPrototype\PluginInterface\bin\Debug\PluginInterface.dll
PluginPrototype\PluginInterface\obj
PluginPrototype\PluginInterface\obj\Debug
PluginPrototype\PluginInterface\obj\Debug\temp
PluginPrototype\PluginInterface\obj\Debug\TempPE
PluginPrototype\PluginInterface\PluginInterface.cs
PluginPrototype\PluginInterface\PluginInterface.csproj
PluginPrototype\PluginInterface\PluginInterface.csproj.user
PluginPrototype\PluginPrototype.sln
PluginPrototype\PluginsInCSharp.pdf