title: How do I define data model type for an advance group of item?
body: <p>I have just begun in ASP.Net Core MVC field and there's a form of input item that confuse me a lot. In which, several items will be gathered in checkbox form. For each item checked, it will display a list of input field that related to those checked item. I don't know the proper way to define this model as well as using it in Razor page. It contains many layers of data in an insane amount of data. The amount item in my image has been reduce, their real amount is a lot more.</p>
  <p><a href="https://i.stack.imgur.com/WuJiT.png" rel="nofollow noreferrer">What it looks like on Web</a></p>
  <p><a href="https://i.stack.imgur.com/WuJiT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WuJiT.png" alt="enter image description here" /></a></p>