ASP & .NET Microsoft's Solution for Dynamic Web Development - Mohammad Ali Choudhry

ASP & .NET
Microsoft's Solution for Dynamic Web
            Development

         Mohammad Ali Choudhry
             Milad Armeen
          Husain Zeerapurwala
              Campbell Ma
             Seul Kee Yoon

Introduction
●
    Microsoft's Server-side technology.
●
    Uses built-in objects.
●
    Application, ASPError, Request, Response, Server, and
    Session.
●
    ASP written in VB script, but can use other languages
    using installable engines.
●
    Latest version ASP-3.0 in Nov 2000. Succeeded by
    ASP.NET in Jan 2002

Sample Usage

●
    Simplicity and Speed over CGI and Perl.
●
    Browser only sees HTML code.
●
    Runs only on Microsoft platform.
●
    Partitioning the Interface and Engine is difficult.

Microsoft .Net Framework
●
    A software component which can be added to the Microsoft
    W indows operating system.
●
     It provides a large body of pre-coded solutions to common
    program requirements, and manages the execution of programs
    written specifically for the framework.
●
     The .NET Framework is a key Microsoft offering, and is
    intended to be used by most new applications created for the
    W indows platform.
●
     The pre-coded solutions in the namespaces form the
    framework's class library and cover a large range of
    programming needs in areas including the user interface, data
    access, cryptography, web application development, numeric
    algorithms, and network communications.
●
     The functions of the class library are used by programmers who
    combine them with their own code to produce applications.

Microsoft .Net Framework
●
    It brings into the operating system features and responsibilities
    that previously had been provided individually by programming
    languages and tools from various sources.
●
    The incorporation of the features into the operating system
    offers a number of advantages, including:
    – Assuring the availability of framework features to all programs written
      in any of the .NET languages.
    – Providing to programmers a common means of accessing framework
      features, regardless of programming language.
    – Guarantees of a common behavior within the framework, regardless of
      programming language.
    – Allowing the operating system to provide some guarantees of program
      behavior that it otherwise could not offer.
    – Reducing the complexity and limitations of program-to-program
      communication, even when those programs are written in different
      .NET languages.

ASP .NET
●
    ASP.NET is a set of web application development technologies
    marketed by Microsoft. Programmers can use it to build dynamic
    web sites, web applications and XML web services.

●
    It is part of Microsoft's .NET platform and is the successor to
    Microsoft's Active Server Pages (ASP) technology.

●
    ASP and ASP.NET differ significantly. Microsoft has completely
    rebuilt ASP.NET, based on the Common Language Runtime
    (CLR) shared by all Microsoft .NET applications.

●
    ASP.NET has performance benefits over other script-based
    technologies because the server-side code is compiled to one or
    a few DLL files on a web server.

ASP .NET
●
    Encourages the programmer to develop applications using an
    event-driven GUI paradigm, rather than in conventional web-
    scripting environments like ASP and PHP.
●
    The framework attempts to combine existing technologies such
    as JavaScript with internal components like "Viewstate" to bring
    persistent (inter-request) state to the inherently stateless web
    environment.
●
    ASP.NET uses the .NET Framework as an infrastructure.
●
    The .NET Framework offers a managed runtime environment
    (like Java), providing a virtual machine with JIT and a class
    library.
●
    Data access provides one example, and comes tightly coupled
    with ASP.NET. A developer can make a page to display a list of
    records in a database, for example, significantly more readily
    using ASP.NET than with traditional web technologies like ASP
    or PHP.
●
    Can cut down on development time by providing a rich set of
    features.

ASP.NET vs ASP
• Compatibility: Run along side ASP, uses new file extension “.aspx”.

• Language Support: .NET Framework, ADO.NET, C#, C++, VB and
  some 25 more languages.

• COM Object : Next Generation W indows Services (NGW S). No
  DLL registering.

• Event Aware Controls: Expose events processed by ASP .NET.
  Example: Load, Click and Change events.

• ASP .NET Controls:
   – HTML Server Controls:– Traditional HTML Tags
   – W eb Server Controls:– New ASP.NET tags
   – Validation Server Controls:– For input validation

ASP.NET vs ASP
• Caching: ASP+ allows objects and output to be cached.
  Programmer decides what needs to be cached.

• Scalability: ASP+ includes maintaining session state across
  server, monitors processes and multi-processor balancing.

ASP .NET versus PHP
Advantages
 • Compiled code as opposed to scripted, pre-compiled
   code increases web-site speed.
 • Strong Object-oriented design
 • Built in security tools to help defend against Cross-site
   scripting (XSS), SQL injection, session hijacking,
   hidden field tampering, etc… Examples:
   ValidateRequest, ViewStateUserKey, ViewState
 • Ease of development with .NET framework. Visual
   Studio 2005 provides a nice WYSIWYG IDE to aid for
   faster development.

Disadvantages
 • OS dependent means Windows only
 • Proprietary technology
 • Memory usage high depending on configuration

.NET vs Mono

Mono is an open source technology sponsored by Novell to
allow UNIX developers to build and deploy .NET
applications for different platforms.

Advantages
  • Framework is more complete than Mono which is
    limited to only .NET 1.1 API
  • Visual Studio 2005 more refined then open source
    toolkits

  Disadvantages
  • OS dependent where as Mono supports many
    platforms
  • Proprietary technology

.NET vs JSP
Advantages:
 • Ease of development with .NET framework. Visual
   Studio 2005 provides a nice WYSIWYG IDE to aid for
   faster development.
 • Reusability of code (web controls make it easy)
 • Performance

Disadvantages:
 • OS dependent means Windows only
 • .NET is a rewrite and introduces risk as with any first-
   generation technology while JSP (J2EE) have proven
   track record
 • Java, which is better than C# due to market-share
 • Free!

.NET market

[ Top 1000 Application Servers Survey, August 2006 ]