Tutorials ASP.NET Core MVC Tutorial
BindNever and BindRequired — Complete Guide
BindNever and BindRequired — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of ASP.NET Core MVC Tutorial on Toolliyo Academy.
On this page
ASP.NET Core MVC Tutorial · Lesson 112 of 200
BindNever and BindRequired
Getting Started ✓ → Core MVC ✓ → Data & Security ✓ → Production ✓ → Career ✓
Interview Ready · 10 — Interview Prep · ~10 min · Section 12: Validation
What is this?
BindNever and BindRequired stops bad data before it reaches your database — annotations, FluentValidation, or custom rules.
Why should you care?
Skipped validation causes bad orders, security issues, and angry users.
See it live — copy this example
Create an MVC project (dotnet new mvc), add the code, and run dotnet run.
// BindNever and BindRequired — ShopNest.Mvc example
public class HomeController : Controller
{
public IActionResult Index() => View();
}
Run Example »
Edit the code and click Run — like W3Schools Try it Yourself.
What happened?
- Study the example line by line.
- Each part connects to BindNever and BindRequired.
- Edit one line, save, and run dotnet run to see what changes.
Try it yourself
- Add the rule from the lesson.
- Submit invalid data and confirm errors display.
- Fix the input and confirm save succeeds.
- Change text or labels in the example and run again — watch the browser update.
- Break the code on purpose (remove a semicolon), read the error message, then fix it.
Remember
You learned what BindNever and BindRequired is and when to use it. Practice by changing the example yourself. Explain it in your own words before moving on.