File list (Check if you may need any files):
GradientBackground颜色渐变\Application.xaml
..........................\Application.xaml.vb
..........................\GradientBackground.sln
..........................\GradientBackground.suo
..........................\GradientBackground.vbproj
..........................\MainWindow.xaml
..........................\MainWindow.xaml.vb
..........................\.y Project\AssemblyInfo.vb
..........................\..........\MyExtensions\MyWpfExtension.vb
..........................\..........\Resources.Designer.vb
..........................\..........\Resources.resx
..........................\..........\Settings.Designer.vb
..........................\..........\Settings.settings
..........................\..........\MyExtensions
..........................\My Project
GradientBackground颜色渐变