File list (Check if you may need any files):
GradientFillDemo
................\GradientFillDemo
................\................\Form1.cs
................\................\Form1.Designer.cs
................\................\Form1.resx
................\................\GradientFill.cs
................\................\GradientFillDemo.csproj
................\................\GradientFilledButton.cs
................\................\Program.cs
................\................\Properties
................\................\..........\AssemblyInfo.cs
................\................\..........\Resources.Designer.cs
................\................\..........\Resources.resx
................\................\Win32Helper.cs
................\GradientFillDemo.sln