When implemented using WPF background processing to wait for time-consuming tasks front display animation Demo, animation Win8 wait imitation effect, with a third-party library, you can achieve your other animation effects.

WaitingDemo\WaitingDemo\App.xaml
...........\...........\App.xaml.cs
...........\...........\MainWindow.xaml
...........\...........\MainWindow.xaml.cs
...........\...........\Properties\AssemblyInfo.cs
...........\...........\..........\Resources.Designer.cs
...........\...........\..........\Resources.resx
...........\...........\..........\Settings.Designer.cs
...........\...........\..........\Settings.settings
...........\...........\WaitingDemo.csproj
...........\...........\WaitingDemo.suo
...........\...........\WaitingWnd.xaml
...........\...........\WaitingWnd.xaml.cs
...........\...........\WPFSpark.dll
...........\...........\WPFSpark.pdb
...........\WaitingDemo.sln
...........\WaitingDemo.suo
...........\...........\Properties
...........\WaitingDemo
WaitingDemo

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