what happens behind model passing in ASP MVC4

Question

Learning the ASP MVC now, just my 3rd week on MVC

I did some tests on modeling pass, basically the controller just get the model, and pass into the view without doing an

Answer 1

You need to have getter and setter for ViewModel in order to retrieve the values from posted form.

public class ViewModel
{
    public string str1 { get; set; }
    public string str2 { get; set; }
    public List<int> list { get; set; }
}

Answer 2

You are showing us the POST-version of the method. Usually, the post action method would take the model, do some kind of processing (input validation, save to db, call a service, etc.), then if success, redirect to a different page.

You would usually only call the view from the POST action method if you have any problems with the inputs that require the user to fix.