How to use multiple form elements in ASP.NET MVC

So I am new to ASP.NET MVC and I would like to create a view with a text box for each item in a collection. How do I do this, and how do I capture the information when it POSTs back? I have used forms and form elements to build static forms for a model, but never dynamically generated form elements based on a variable size collection.

ASP.NET Custom 404 Returning 200 OK Instead of 404 Not Found

After trying to setup my site for Google Webmaster Tools I found that my Custom ASP.NET 404 page was not returning the 404 status code. It displayed the correct custom page and told the browser that everything is OK. This is consider a soft 404 or false 404. Google doesn’t like this. So I found many articles on the issue but the solution I want didn’t seem to work.