Volodymyr Voytyshyn08/27/2011

ASP.NET MVCas the next stepin web development

Goal

What is ASP.NET MVC?

Contents

About MVC Pattern

ASP.NET Platform

Sample Application

ASP.NET MVC Project Concepts

ASP.NET MVC Key Features

MVC vs WebForms

Conclusion

ABOUT MVC PATTERN

History of MVC Pattern

Concept of MVC is described in 1979 by Trygve Reenskaug (Norway)

One of the first version of MVC is implemented in Smalltallk-80 class library

Main Idea of MVC

Separate view and data source

View

Model Controller

Classic MVC (Active Model)

Model

ViewHandle view events

Update data

Data Source

Controller

Get

dat

a

Noti

fy fo

r Ch

ange

s

Mediator

Classic MVC (Passive Model)

Model

ViewHandle view events

Update data

Data Source

ControllerGet

dat

a Notify for Changes

Mediator

MVP

ViewHandle view events

Update data

Model

PresenterPut data

MediatorGet data

MVP: Key Differences with Classic MVC Presenter knows all about View

Presenter communicates with data source directly

Events in Model and View removed

Presenter implements main presentation logic

Presenter is mediator between Model and View

ASP.NET PLATFORM

ASP.NET Web Forms Key Versions

ASP.NET 1.02002

ASP.NET 2.02005

ASP.NET 3.52007

ASP.NET 4.02010

ASP1998

ASP.NET MVC Key Versions

ASP.NET MVC 12009

ASP.NET MVC 22010

ASP.NET MVC 32011

ASP.NET

ASP.NET Components

ASP.NET Web Forms

ASP.NET MVC

Web Forms View Engine Razor View Engine

ASP.NET CoreCaching

Modules

Pages

Controls

GlobalizationMaster Pages

Handlers

Profile

Membership

Roles

Etc.

Security

SAMPLE APPLICATION

Concept

Project name: “Easy Reporting”

Idea: time tracking system for developers

Key Use Cases

uc Use Case

Dev eloper Manager

Report working time Confirm dev eloper's working time

Manage tasksManage projects

Components cmp Component

Data Access Layer

Presentation Layer

Data Layer

«Web Application»WebUI

«Class Library»DAL

«Class Library»Entities

«database»ER

ASP.NET MVC 3

Repository Pattern

Entity Framework 4

MS SQL Server 2008

ASP.NET Membership

«Class Library»Castle Windsor

Linq to Entities

«use»

«use»

«use»

«use»«use»

BASIC CONCEPTS OF MVC PROJECT

Typical MVC Project Structure

Simple Controller and Action

Controller

Action

ProjectController.cs

Simple ViewIndex.cshtml

Simple Client Page

Mediator

MVC Implementation

Controller

ActionView

Model

Client

ASP.NET MVC KEY FEATURES

Action Results

ActionResult – base class of result of an action

View Redirect JavaScript Json

File HTTP Content Empty

Action Filters

Filter types:– Authorization– Action– Result– Exception

Standard filters:– Authorize– HttpGet– HttpPost– OutputCache– HandleError

Filter scope:– Action– Controller– Application

Action

Action Filter

Action Filter

Action Filters: Example

ProjectController.cs

View Engines Concept

Razor

*.aspx / *.ascx / *.master

Etc.

ASP.NET MVC

Passing data into View

Action View

Model

ViewData

ViewBag

TempData

HTML Helpers

HTML Helper – “server control” in ASP.NET MVC

Classic HTML Helpers Declarative HTML Helpers

Partial Views

Partial view – “user control” in ASP.NET MVC

_Layout.cshtml

Footer.cshtml

Header.cshtml

Layout pages and sections

Layout page – “master page” in ASP.NET MVC

Section – “ContentPlaceHolder” in ASP.NET MVC

Routing

Controller

ActionClient

Params

Routing Engine

URL

Default route - /controller/action/id

Dependency Injection

IServiceLocator MvcServiceLocator

Controller Factory

Controller

View

Action FilterInstantiate

Service Locator Implementation

Setup

Implement

Unit Testing

Can be tested:– Controllers– Routes– Html helpers– UI Models– View logic– Etc.

UsingInversion of Control

principle

TestableApplication

MVC Control Libraries

Client Side Controls

JQuery IU

DOJO

Etc.

Server Side Controls

Telerik

DevExpress

Etc.

MVC VS WEBFORMS

When we do not need MVC?

I need MVC, because

… it is better than Web Forms

… it implements MVC architecture

… I want to escape from view state

… I do not want automatically generated id in HTML

… I want to get full control over HTML

… I want more friendly URLs

MVC Benefits

Automated testing

Powerful AJAX client side

Flexibility, extensibility, clarity

Easy of learning and easy of using

Clearly separated client side and server side

MVC Disadvantages

Speed of development (particularly in early stages)

… but you can win when you make changes in finished product

Conclusion

Convenient

Easier

Clearer

Faster

ASP.NET MVC

Thank You!

Copyright © 2011 SoftServe, Inc.

Contacts

Volodymyr Voytyshyn5 Knyahyni Olhy Str., Rivne 33000, Ukraine

Tel: +38(066) 41 83 509

E-mail: vvoit@softserveinc.comvoytyshyn@gmail.com

Skype: voytyshin