A production-ready library for building WPF applications using the Elmish/MVU architecture with static XAML views and data bindings.
Elmish.WPF is a library that allows developers to build WPF applications using the Elmish/Model-View-Update (MVU) architecture. It provides a way to write application logic in F# with pure functions and immutable state, while using static XAML views for the user interface. This approach combines the simplicity and testability of MVU with the data binding and tooling of WPF.
F# developers building WPF desktop applications who want to use the Elmish/MVU architecture for its simplicity, testability, and unidirectional data flow, while retaining XAML and WPF's data binding capabilities.
Developers choose Elmish.WPF because it brings the benefits of the Elmish/MVU architecture—like immutable state, pure functions, and easy testing—to WPF development without sacrificing compatibility with existing XAML tools, third-party libraries, and design-time data support.
Static WPF views for elmish programs
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Enforces unidirectional data flow with immutable state and pure functions, making the logic highly testable and robust, as emphasized in the tutorial and samples.
Leverages existing WPF XAML tooling, design-time data support, and compatibility with third-party libraries like MaterialDesignInXamlToolkit, treating static views as a feature.
Provides a rich set of bindings (e.g., one-way, two-way, commands, sub-models) through the Binding module, allowing flexible and type-safe connections between XAML and Elmish logic.
Integrates with Microsoft.Extensions.Logging for detailed logs on updates, bindings, and performance, aiding in troubleshooting and optimization, as shown in the logging FAQ.
Requires managing separate F# and C# projects (for logic and XAML entry points), adding setup overhead and potential build configuration issues, as noted in the getting started guide.
Relies on pre-defined XAML views, which reduces UI composability and dynamism compared to fully MVU-driven solutions, a trade-off admitted in the FAQ regarding dynamic UI alternatives.
Demands familiarity with F# functional programming and Elmish patterns, which can be a barrier for teams accustomed to C# and traditional MVVM, limiting adoption in mixed environments.