Your C# business logic, data access layers, service classes, and .NET libraries transfer without modification — they’re standard .NET. XAML markup requires targeted changes: namespace syntax, replacing triggers with VisualStateManager, and adapting WPF-specific controls to their WinUI equivalents. For most LoB applications, 80–90% of C# code reuses directly. XAML files need per-file review, but the structure and data bindings typically carry over with mechanical changes — not architectural rework.

Uno Platform supports controls from Syncfusion, Windows Community Toolkit, LiveCharts, MapsUI, and others that provide WinUI targets. For WPF-only controls (some DevExpress and Telerik suites), you have two options: use Uno’s MAUI Embedding feature to host MAUI-compatible controls, or replace with equivalent Uno Toolkit and Community Toolkit components. We recommend auditing your third-party dependencies early in the assessment phase.

Yes. Uno Islands lets you embed Uno Platform controls inside your existing WPF application shell. New features ship as cross-platform Uno modules while legacy screens remain in WPF. Your production release schedule is unaffected. Teams typically migrate module by module over 2–4 quarters, validating each phase independently before proceeding.

No. WinUI XAML is an evolution of the XAML dialect you already know. The core concepts — data binding, dependency properties, templates, styles, visual tree — are the same. The differences are specific: namespace declaration syntax changes from clr-namespace to using:, triggers are replaced by VisualStateManager, some panel types differ, and theming uses a resource-based system. It’s more like moving between regional dialects of the same language than learning a new one.

Uno Platform renders via Skia — the same engine behind Chrome and Flutter — delivering consistent, hardware-accelerated performance across all platforms. On Windows, you can also target native WinUI for zero-overhead rendering. For data-heavy LoB scenarios (large grids, complex dashboards, real-time updates), Uno’s rendering architecture is designed for exactly these workloads. TradeZero, a publicly listed trading platform, chose Uno Platform specifically for performance-critical financial interfaces.

Uno Platform offers priority support tiers for enterprise customers, including dedicated engineering contacts. The platform is Apache 2.0 licensed — your legal team can audit the entire codebase. Uno Platform is used in regulated industries including financial services (TradeZero), healthcare, and automotive (Toyota). Enterprise migration engagements with hands-on architecture guidance are available — contact our team to scope your project.

Blazor is web-first (HTML/CSS/Razor) — it requires fundamentally different UI skills. MAUI targets mobile and desktop but doesn’t support Web or Linux, and uses Xamarin.Forms-derived abstractions. Avalonia shares WPF’s rendering model but has a smaller ecosystem and no AI tooling story. Uno Platform is the only option that preserves your XAML + C# architecture, targets all 7 platforms including WebAssembly, and provides AI agent integration through MCP servers. The XAML migration path from WPF to WinUI is the most direct reuse of your existing codebase.

You point an AI agent (Claude Code, GitHub Copilot, or any MCP-compatible client) at a WPF XAML file. The agent proposes WinUI equivalents for each WPF-specific pattern — namespace changes, trigger replacements, control substitutions. The Uno Docs MCP gives the agent accurate API knowledge; the App MCP lets it verify the output against your running app’s visual tree. You review every proposed change in your IDE, approve or reject, and commit. It’s pair programming with an AI that understands both XAML dialects — not a magic “convert” button.