What is model binding in ASP.NET MVC? [closed]

Question

What is model binding in ASP.NET MVC, Why is it needed? Can someone give simple example , Can model binding be achieved by checking create strongly typed view?

Answer 1

ModelBinding is the mechanism ASP.NET MVC uses to create strongly-typed objects (or fill primitive-type parameters) from the input stream (usually an HTTP request).

For example, consider this Person model:

public class Person
{
     public string Name { get; set; }
     public int Age { get; set; }
}

Now, you have some Action in some Controller that's expecting a Person type as a parameter:

public class HomeController : Controller
{
      public ActionResult EditPersonDetails(Person person)
      {
          // ...
      }
}

The Model-Binder is then responsible to fill that person parameter for you. By default it does it by consulting the ValueProviders collection and asking for the value of each property in the (to be bound) model.

More on Value-Providers and Model-Binders on http://haacked.com/archive/2011/06/30/whatrsquos-the-difference-between-a-value-provider-and-model-binder.aspx/