What is difference between MVC, MVP & MVVM design pattern in terms of coding c#

Question

If we search Google using the phrase "What is difference between MVC, MVP & MVVM design pattern" then we may get few URL's which discuss the difference between MVC MVP & MVVM design pattern theoretically like:

MVP

Use in situations where binding via a datacontext is not possible. Windows Forms is a perfect example of this. In order to separate the view from the model, a presenter is needed. Since the view cannot directly bind to the presenter, information must be passed to the view via an interface (IView).

MVVM

Use in situations where binding via a datacontext is possible. Why? The various IView interfaces for each view are removed which means less code to maintain. Some examples where MVVM is possible include WPF and javascript projects using Knockout.

MVC

Use in situations where the connection between the view and the rest of the program is not always available (and you can’t effectively employ MVVM or MVP). This clearly describes the situation where a web API is separated from the data sent to the client browsers. Microsoft’s ASP.NET MVC is a great tool for managing such situations and provides a very clear MVC framework

---

But I have not found a single article which discuss the difference theoretically along with sample code.

It would be really nice if i get a article which discuss the difference between these 3 design patterns (MVC, MVP & MVVM) along with code.

I'd like to get my hands on source code of 3 similar CRUD apps which has been implemented by these three design patterns (MVC, MVP & MVVM). So that I can go through the code and understand how one should write code for these three design patter (MVC, MVP & MVVM).

So if any such article exists which discuss how code would look different for these 3 design patterns (MVC, MVP & MVVM) then please redirect me to that article.

Answer 1

Some basic differences can be written in short:

MVC:

Traditional MVC is where there is a

1. Model: Acts as the model for data
2. View : Deals with the view to the user which can be the UI
3. Controller: Controls the interaction between Model and View, where view calls the controller to update model. View can call multiple controllers if needed.

MVP:

Similar to traditional MVC but Controller is replaced by Presenter. But the Presenter, unlike Controller is responsible for changing the view as well. The view usually does not call the presenter.

MVVM

The difference here is the presence of View Model. It is kind of an implementation of Observer Design Pattern, where changes in the model are represented in the view as well, by the VM. Eg: If a slider is changed, not only the model is updated but the data which may be a text, that is displayed in the view is updated as well. So there is a two-way data binding.