wpf 实现textblock内容自动滚动动画

D:\VsProject\TextBlockAnimation\TextBlockAnimation\bin\Debug\TextBlockAnimation.exe.config D:\VsProject\TextBlockAnimation\TextBlockAnimation\bin\Debug\TextBlockAnimation.exe D:\VsProject\TextBlockAnimation\TextBlockAnimation\bin\Debug\TextBlockAnimation.pdb D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.csprojResolveAssemblyReference.cache D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\MainWindow.baml D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\MainWindow.g.cs D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\App.g.cs D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation_MarkupCompile.cache D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.g.resources D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.Properties.Resources.resources D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.csproj.GenerateResource.Cache D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.exe D:\VsProject\TextBlockAnimation\TextBlockAnimation\obj\Debug\TextBlockAnimation.pdb