Problem

I know there is a lot of ways of doing Model validation within MVC, and there is quite a lot of documentation regarding this topic. However, I'm not quite sure what's the best approach for validating properties of the Model which are "Sub Model" of same type.

Keep in mind the following

• I still want to to take profit of the TryUpdateModel/TryValidateModel methods
• Each of these "sub models" have strongly typed views
• There is one strongly typed view for the MainModel class that renders the overall display view

It might sound a little confusing but i'll throw in some code to clarify. Take as example the following classes:

MainModel:

class MainModel{
    public SomeSubModel Prop1 { get; set; }
    public SomeSubModel Prop2 { get; set; }
}

SomeSubModel:

class SomeSubModel{
      public string Name { get; set; }
      public string Foo { get; set; }
      public int Number { get; set; }
}

MainModelController:

class MainModelController{

    public ActionResult MainDisplay(){
         var main = db.retrieveMainModel();
         return View(main); 
    }

    [HttpGet]
    public ActionResult EditProp1(){
         //hypothetical retrieve method to get MainModel from somewhere
         var main = db.retrieveMainModel();

         //return "submodel" to the strictly typed edit view for Prop1
         return View(main.Prop1);
    }

    [HttpPost]
    public ActionResult EditProp1(SomeSubModel model){

         if(TryValidateModel(model)){
              //hypothetical retrieve method to get MainModel from somewhere
              var main = db.retrieveMainModel();
              main.Prop1 = model;
              db.Save();

              //when succesfully saved return to main display pa