wpf-devexpress-loading-indicators

Call SplashScreenManager.CreateThemed(new DXSplashScreenViewModel {...}).ShowOnStartup() in the App constructor. Set ApplicationThemeHelper.ApplicationThemeName first so the splash picks up theme colors, and it auto-closes when the main window loads.

SplashScreenManager runs on a separate UI thread for startup and blocking operations. LoadingDecorator wraps a slow-loading region with configurable OwnerLock input blocking. WaitIndicator is a simple inline spinner toggled via DeferedVisibility on the main thread.

LoadingDecorator and WaitIndicator run on the main UI thread, so they freeze when it blocks. Use SplashScreenManager, which runs on a separate UI thread and keeps animating, or refactor the work to async.

Yes, all three indicators support .NET 6/7/8+ targeting Windows (net8.0-windows) and .NET Framework 4.6.2+. Install the DevExpress.Wpf.Core NuGet package; a valid DevExpress license is required.

Replace DXSplashScreen.Show<T>() with SplashScreenManager.CreateThemed(...).ShowOnStartup() or .Show(), and DXSplashScreen.Close() with the instance Close() or static CloseAll(). Both run on a separate UI thread, so migration is mostly an API rename.

DevExpress.Wpf.Core transitively references System.Windows.Forms, and ImplicitUsings on .NET 6+ makes Application ambiguous. Qualify it as System.Windows.Application in App.xaml.cs to resolve the CS0104 error.