How does model binding work with complex types in ASP.NET MVC?

How does model binding work with complex types in ASP.NET MVC?

Model binding in ASP.NET MVC allows you to map form data to complex types. When a form is submitted, the framework automatically creates an instance of the complex type and populates its properties with the values from the form.

Can you give me an example of a complex type?

Sure! A complex type could be a class like Product that has properties such as Name, Price, and a nested object like Category with its own properties.

How do I ensure that the model binding works correctly?

To ensure correct model binding, make sure the names of the form fields match the property names of your complex type. You can also use data annotations for validation.

What happens if the data doesn't match the model?

If the data doesn't match, the model state will be invalid, and you can check for errors using ModelState.IsValid in your controller.