Composable interaction

XAML Behaviors

Add interaction in XAML without turning views into code-behind.

View on GitHub ↗Package ↗

StatusActive

TierFlagship

DomainAvalonia

Repositorywieslawsoltes/Xaml.Behaviors

Overview

Reusable actions, triggers, and behaviors for Avalonia, including AOT-friendly generated options, flyout lifecycle events, and resilient state handling.

XAML Behaviors turns routed events and observable state into reusable actions. The library ranges from small interaction primitives to drag-and-drop, viewport, responsive, and strongly typed generated behaviors. Flyout opened and closed events support command binding with the expected logical and data context, triggers attached after a control loads synchronize their lifecycle, and non-convertible DataTrigger values stay inactive instead of interrupting the application.

Actions and triggers

Drag and drop behaviors

Flyout and control lifecycle events

AOT-friendly source generators

Built for

Where it fits.

Avalonia MVVM applications
Control authors packaging reusable interaction
AOT-conscious teams avoiding reflection-heavy wiring

Compatibility & status

Avalonia

Supported

MVVM

First-class

ReactiveUI

Integration

NativeAOT

Generated options

In the work

Real output,
not a mockup.

A broad library of composable interaction primitives for Avalonia.

Architecture

Clear layers.
Replaceable seams.

XAML / C#

Applications compose reusable behavior through normal Avalonia APIs.

Integration

Focused packages connect to Avalonia properties, input, rendering, and flyout lifecycle events.

Platform

Late-attached triggers synchronize with loaded controls, while invalid DataTrigger conversions remain safely inactive.

Actionsdeclarative operations

Triggersevent and state activation

Generatorstyped AOT surfaces

LiveGitHub metadata

Quick start

From package
to first frame.

Choose the package workflow used by your repository, then start from the smallest working example. Replace VERSION with the current stable or prerelease version shown on NuGet.

dotnet add package Xaml.Behaviors

<PackageReference Include="Xaml.Behaviors" Version="VERSION" />

<PackageVersion Include="Xaml.Behaviors" Version="VERSION" />

<Button Content="Save">
  <Interaction.Behaviors>
    <EventTriggerBehavior EventName="Click">
      <InvokeCommandAction Command="{Binding SaveCommand}" />
    </EventTriggerBehavior>
  </Interaction.Behaviors>
</Button>