Building a Clean Master-Detail App with Blazor Server, MudBlazor, and EF Core
When building business applications, one of the most common requirements is a master-detail workflow. Orders and order items are a perfect example.
You need a clean list view, a reliable detail page, inline editing, validation, filtering, and a structure that can grow without becoming messy.
That is exactly what BlazorOrderApp is designed to demonstrate.
This application is a production-ready Blazor Server solution built with MudBlazor for the UI, EF Core with SQL Server for persistence, and a clean architecture that separates concerns across Domain, Application, Infrastructure, and Web layers.
Instead of placing everything in pages or code-behind files, the app keeps business rules, data access, validation, and UI responsibilities clearly divided.
At the core of the app is a classic master-detail pattern. The Orders.razor page acts as the master list, giving users filtering, search, pagination, and a structured overview of all orders. The OrderDetail.razor page handles the detail side, where users can inspect customer information, manage order items, and update order status in a focused way.
A big strength of this project is its use of the Repository and Specification patterns. The repository layer keeps EF Core logic centralized and testable, while specifications allow queries to be defined as reusable objects instead of scattered LINQ expressions. This makes filtering, paging, and retrieving complex data much easier to maintain over time.
Validation is handled with FluentValidation, which keeps rules explicit and easy to evolve as business needs grow. Combined with MudBlazor dialogs for create, edit, and delete operations, the result is a workflow that feels polished and user-friendly without sacrificing structure behind the scenes.
Overall, BlazorOrderApp is a strong example of how to build a modern internal business application in Blazor. It shows that you can create a clean, scalable CRUD system with a professional UI, solid architecture, and maintainable backend patterns, all within the .NET ecosystem.
Source code : https://github.com/stevsharp/BlazorOrderApp