45 .NET Web API Interview Questions That Actually Get Asked in 2026
45 practical .NET Web API interview questions with expert answers, code examples, and red flags. ASP.NET Core, EF Core 10, auth, caching, architecture.
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45 practical .NET Web API interview questions with expert answers, code examples, and red flags. ASP.NET Core, EF Core 10, auth, caching, architecture.
Bind, validate, and reload configuration in ASP.NET Core .NET 10 with IOptions, IOptionsSnapshot, IOptionsMonitor, and IValidateOptions.
Master all 6 filter types in ASP.NET Core .NET 10 - authorization, resource, action, exception, result, and endpoint filters with decision matrix and code.
Use FluentValidation 12 in ASP.NET Core .NET 10 - endpoint filters for Minimal APIs, async validators, custom rules, and a decision matrix vs Data Annotations.
Master ASP.NET Core middleware in .NET 10 - execution order, custom middleware, IMiddleware, short-circuiting, and the middleware vs filters decision matrix with examples.
Master structured logging with Serilog in ASP.NET Core .NET 10 - sinks, enrichers, OpenTelemetry, anti-patterns, correlation IDs, and production-ready config templates.
Containerize .NET 10 apps without a Dockerfile using dotnet publish. Image size benchmarks, Alpine vs Chiseled, CI/CD with GitHub Actions, and more.
Learn how to migrate from .sln to .slnx in .NET 10. Understand the new XML-based solution format, migration methods, CI/CD compatibility, and team adoption strategy.
Implement pagination, sorting, and searching in ASP.NET Core Web API with EF Core 10. Offset & keyset pagination, dynamic sorting, and performance tips.
Run C# like Python with dotnet run app.cs in .NET 10. Complete guide with directives, practical examples, Native AOT publishing, and CLI reference.
Learn to write the perfect CLAUDE.md for .NET projects. Includes copy-paste templates for Clean Architecture, Minimal APIs, and enterprise solutions.
Master IExceptionHandler in ASP.NET Core. Complete guide with custom exceptions, handler chaining, Problem Details, and .NET 10's SuppressDiagnosticsCallback.