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avalonia-ui

Develop cross-platform .NET applications with C# and XAML.

19|4|Updated Mar 1, 2026
Search Tags:#cross-platform#dotnet#ui development#mvvm#avalonia#xaml#reactiveui
One-click install
npx skills add https://github.com/j7-dev/everything-github-copilot --skill avalonia-ui
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: avalonia-ui
Source: https://github.com/j7-dev/everything-github-copilot/tree/main/skills/avalonia-ui
Command: npx skills add https://github.com/j7-dev/everything-github-copilot --skill avalonia-ui

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill simplifies the creation of modern, cross-platform desktop, mobile, and web applications using C# and XAML, eliminating the need for platform-specific UI code.

Core Features & Use Cases

  • Cross-Platform Development: Design and build applications that run consistently on Windows, macOS, Linux, iOS, Android, and WebAssembly from a single codebase.
  • XAML-Based UI Design: Utilize a powerful XAML dialect for declarative UI layout, styling, and data binding, similar to WPF.
  • MVVM & ReactiveUI Support: Seamlessly integrate with MVVM patterns and ReactiveUI for robust application architecture and reactive programming.
  • Use Case: Develop a business application with a consistent look and feel across all major desktop operating systems, and then deploy the same application to mobile devices with minimal changes.

Quick Start

Create a new Avalonia application using the official templates to begin your cross-platform UI development journey.

Frequently Asked Questions about avalonia-ui

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build cross-platform .NET UIs for desktop and mobile from a single codebase?▼

You can build cross-platform .NET UIs using C# and XAML with a unified rendering engine. This ensures consistent application interfaces across Windows, macOS, Linux, iOS, Android, and WebAssembly without writing platform-specific UI code.

Does Avalonia support MVVM and ReactiveUI for application architecture?▼

Avalonia fully supports MVVM and ReactiveUI for application architecture. This allows developers to implement robust data binding and reactive programming patterns within their cross-platform .NET applications.

Can I use XAML for declarative UI layout and styling in cross-platform .NET applications?▼

Yes, you can use XAML for declarative UI layout and styling in cross-platform .NET applications. It provides a powerful dialect similar to WPF, enabling advanced styling through ControlThemes and Container Queries.

What is the best way to create a consistent UI across Windows, macOS, and Linux?▼

The best way to create a consistent UI across Windows, macOS, and Linux is using a unified rendering engine. This approach processes C# and XAML to draw interfaces identically on every desktop operating system.

How do I start developing cross-platform desktop applications with C# and XAML?▼

To start developing cross-platform desktop applications, use the official templates to create a new project. This sets up the C# and XAML environment needed to begin your cross-platform UI development journey.

Can I deploy the same .NET desktop application to mobile devices with minimal changes?▼

Yes, you can deploy the same .NET desktop application to mobile devices with minimal changes. The framework's unified rendering engine and XAML dialect allow the single codebase to run on iOS and Android.

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