Why should you care?

Every business app adds things — products, students, tickets. Create is the first CRUD operation teams build after listing data.

See it live — copy this example

Create an MVC project (dotnet new mvc), add the code, and run dotnet run.

[HttpGet]
public IActionResult Create() => View(new ProductViewModel());

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create(ProductViewModel model)
{
    if (!ModelState.IsValid) return View(model);
    await _productService.AddAsync(model);
    return RedirectToAction(nameof(Index));
}

Run Example »

Edit the code and click Run — like W3Schools Try it Yourself.

What happened?

• GET returns empty ViewModel so fields are blank.
• POST validates, calls service, redirects so refresh does not double-insert.
• Anti-forgery token prevents forged posts.

Try it yourself

1. Scaffold Create view with form fields.
2. build GET and POST Create.
3. Test validation by submitting empty form.
4. Change text or labels in the example and run again — watch the browser update.
5. Break the code on purpose (remove a semicolon), read the error message, then fix it.

Remember

GET shows form, POST saves data. Redirect after successful create. Validate on server every time.