Why Migrate from WPF to Blazor?
WPF desktop apps have been the backbone of enterprise .NET software for over 15 years. But as teams go remote and businesses demand browser-accessible tools, WPF's biggest weakness becomes clear — it requires installation, manual updates, and local network access. Blazor Server solves all three.
What You Keep, What You Rewrite
The good news: your C# business logic, EF Core data layer, LINQ queries, and service classes move over almost untouched. What changes is the UI layer — XAML becomes Razor components, and code-behind becomes component lifecycle methods.
Phase 1: Extract Business Logic
Start by separating UI from logic. Any code in `.xaml.cs` files that touches a database, calls an API, or runs calculations — extract it into plain C# service classes. These become your Blazor injectable services with zero changes.
// Before: WPF code-behind
private void LoadData()
{
var items = _db.Products.Where(p => p.Active).ToList();
ProductGrid.ItemsSource = items;
}
// After: Blazor service (identical logic)
public class ProductService
{
public List<Product> GetActiveProducts() =>
_db.Products.Where(p => p.Active).ToList();
}Phase 2: Map XAML Controls to Razor Components
Most WPF controls have direct Blazor equivalents — especially if you use Syncfusion or Telerik, which ship both WPF and Blazor component libraries with near-identical APIs. DataGrid becomes SfGrid, Charts become SfChart, and so on.
Phase 3: Real-Time with SignalR
Blazor Server uses SignalR under the hood. If your WPF app had real-time data (stock tickers, live order status), this actually becomes easier — Blazor Server pushes UI updates automatically when server state changes.
Timeline and Cost Estimate
A mid-size WPF app (10–15 screens, 3–5 modules) typically takes 6–10 weeks to migrate with an experienced .NET developer who knows both stacks. The payoff: browser access, zero client installation, and modern DevOps deployment.
The best migrations aren't rewrites — they're careful extractions. Keep what works, modernise what doesn't.— Kathan N. Patel
If you have a WPF app you're looking to modernise, I'd love to chat. Use the contact form or estimate your migration cost with my free tool.