Model Validation in ASP.NET Core

Model Validation in ASP.NET Core — a practical guide to ASP.NET Core model validation with clear examples you can reuse in real projects.

ASP & ASP.NET Tutorial Series (138/247). Prefer one article? Read the complete ASP.NET tutorial.

Short description

Return 400 with problem details for APIs.

Validation tip

if (!ModelState.IsValid) return ValidationProblem(ModelState);