gum-runtime-binding

What problem does it solve?

Developers need clear guidance on Gum's runtime data binding system, including differences between GraphicalUiElement visuals and FrameworkElement forms controls, binding contexts, and advanced binding features.

Core Features & Use Cases

• Two Binding Systems: GraphicalUiElement provides simple string bindings, while FrameworkElement offers richer bindings via strings, Binding objects, and lambdas.
• BindingContext Cascading: Automatically propagates to descendants unless overridden.
• Index-Based & Collection Change Binding: Supports indexed path syntax and reacts to collection notifications.
• Weak Listener Management: Prevents memory leaks in deep property paths.
• Non‑Obvious Behaviors: Deprecation of BindableGue, static path extraction from lambdas, and handling of out‑of‑bounds indexes.

Quick Start

Explain how to bind a TextBox's Text property to a view model property using a lambda expression.