How does model binding work in ASP.NET MVC using attributes?

How does model binding work in ASP.NET MVC using attributes?

Model binding in ASP.NET MVC allows you to map HTTP request data to action method parameters. Using attributes like [FromBody] or [FromQuery], you can specify where to bind the data from.

Can you give me an example of using [FromBody] in a controller?

Sure! In a controller action, you can use [FromBody] to bind JSON data from the request body to a model. For example:

[HttpPost]
public IActionResult Create([FromBody] MyModel model) {
    // Your logic here
}

What happens if the model validation fails?

If model validation fails, the action method won't be executed, and the model state will contain errors. You can check ModelState.IsValid to handle validation errors appropriately.

Are there any other attributes I should know about?

Yes, besides [FromBody], you can use [FromQuery], [FromRoute], and [FromForm] to bind data from different sources in the request.