File list (Check if you may need any files):
DllExample
..........\Backup
..........\......\DllExample.sln
..........\DllExample.sln
..........\myCalculator
..........\............\Calculator.cs
..........\............\myCalculator.csproj
..........\............\Properties
..........\............\..........\AssemblyInfo.cs
..........\UpgradeLog.XML
..........\UseCalculator
..........\.............\Form1.cs
..........\.............\Form1.Designer.cs
..........\.............\Form1.resx
..........\.............\Program.cs
..........\.............\Properties
..........\.............\..........\AssemblyInfo.cs
..........\.............\..........\Resources.Designer.cs
..........\.............\..........\Resources.resx
..........\.............\..........\Settings.Designer.cs
..........\.............\..........\Settings.settings
..........\.............\UseCalculator.csproj
..........\_UpgradeReport_Files
..........\....................\UpgradeReport.css
..........\....................\UpgradeReport.xslt
..........\....................\UpgradeReport_Minus.gif
..........\....................\UpgradeReport_Plus.gif