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Difference betweeen ASP.NET WebForms and ASP.NET MVC

Posted By:Imran Ghani       Posted Date: October 17, 2013    Points: 200    Category: ASP.NET    URL: http://www.dotnetspark.com  

If you are visiting ASP.NET forums and communities, you will find following questions frequently i.e. 1. What is the difference between ASP.NET MVC and ASP.NET WebForms? 2. Is ASP.NET MVC going to replace ASP.NET WebForms? In this web development tutorial, I'll try to answer and explain such queries.
 

If you are visiting ASP.NET forums and communities, you will find following questions frequently i.e.
  • What is the difference between ASP.NET MVC and ASP.NET WebForms?
  • Is ASP.NET MVC going to replace ASP.NET WebForms?
In this web development tutorial, I'll try to answer and explain such queries.

First of all, let me clear that ASP.NET MVC is not replacing ASP.NET WebForms. Both these development models exist and can be used to develop ASP.NET applications. Although both has pros and cons, that we will discuss and compare here.

ASP.NET Web Forms
ASP.NET MVC
ASP.NET Web Forms uses Page controller pattern approach for rendering layout. In this approach, every page has it's own controller i.e. code-behind file that processes the request.
ASP.NET MVC uses Front Controller approach. That approach means ,a common controller for all pages, processes the requests.
No separation of concerns. As we discussed that every page (.aspx) has it's own controller (code behind i.e. aspx.cs/.vb file), so both are tightly coupled.
Very clean separation of concerns. View and Controller are neatly separate.
Because of this coupled behavior, automated testing is really difficult.
Testability is key feature in ASP.NET MVC. Test driven development is quite simple using this approach.
In order to achieve stateful behavior, viewstate is used. Purpose was to give developers, the same experience of a typical WinForms application.
ASP.NET MVC approach is stateless as that of the web. So here no concept of viewstate.
Statefulness has a lots of problem for web environment in case of excessively large viewstate. Large viewstate means increase in page size.
As controller and view are not dependent and also no viewstate concept in ASP.NET MVC, so output is very clean.
ASP.NET WebForms model follows a Page Life cycle.
No Page Life cycle like WebForms. Request cycle is simple in ASP.NET MVC model.
Along with statefulness, microsoft tries to introduce server-side controls as in Windows applications. Purpose was to provide  somehow an abstraction to the details of HTML. In ASP.NET Web Forms, minimal knowledge of HTML, JavaScript and CSS is required.
In MVC, detailed knowledge of HTML, JavaScript and CSS is required.
Above abstraction was good but provides limited control over HTML, JavaScript and CSS which is necessary in many cases.
Full control over HTML, JavaScript and CSS.
With a lots of control libraries availability and limited knowledge of other related technologies, ASP.NET WebForms is RAD(Rapid Application Development) approach.
It's a step back. For developers decrease in productivity.
It's good for small scale applications with limited team size.
It's better as well as recommended approach for large-scale applications where different teams are working together.

This article explains the pros and cons associated with each model. And in last point, I concluded that which model is suitable in a scenario. Hopefully, it will be a reference for choosing the right approach.

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