Introduction to Web Technology and .NET Framework

1. .NET Framework
Part-1
Dr. K ADISESHA

2. Introduction
HTML
HTML Tags
.NET Framework
Web Script
2
C# and Dot Net Framework
Prof. K. Adisesha
Prof. K. Adisesha

3. Introduction
Prof. K. Adisesha
3
Web Technology:
Web Technology refers to the various tools and techniques that are utilized in the
process of communication between different types of devices over the internet.
➢ A web browser is used to access web pages. Web browsers can be defined as programs
that display text, data, pictures, animation, and video on the Internet.
➢ Web Technology can be classified into the following sections:
❖ World Wide Web (WWW)
❖ Web Browser
❖ Web Server
❖ Web Pages
❖ Web Development

4. Introduction
Prof. K. Adisesha
4
Web Technology:
Web Technology refers to the various tools and techniques that are utilized in the
process of communication between different types of devices over the internet.
➢ World Wide Web (WWW): The World Wide Web is based on several different
technologies : Web browsers, Hypertext Markup Language (HTML) and Hypertext
Transfer Protocol (HTTP).
➢ Web Browser: The web browser is an application software to explore www (World
Wide Web). It provides an interface between the server and the client and requests to
the server for web documents and services.
➢ Web Server: Web server is a program which processes the network requests of the
users and serves them with files that create web pages. This exchange takes place
using Hypertext Transfer Protocol (HTTP).

5. Introduction
Prof. K. Adisesha
5
Web Technology:
Web Technology refers to the various tools and techniques that are utilized in the process
of communication between different types of devices over the internet.
➢ Web Pages: A webpage is a digital document that is linked to the World Wide Web and
viewable by anyone connected to the internet has a web browser.
➢ Web Development: Web development refers to the building, creating, and maintaining of
websites.
❖ It includes aspects such as web design, web publishing, web programming, and
database management.
❖ It is the creation of an application that works over the internet i.e. websites.
❖ Web designing is of three kinds, to be specific static, dynamic and eCommerce.

6. Introduction
Prof. K. Adisesha
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Web Technology:
Web Development can be classified into two ways:
➢ Frontend Development: The part of a website that the user interacts directly is termed
as front end. It is also referred to as the ‘client side’of the application.
➢ Backend Development: Backend is the server side of a website. It is the part of the
website that users cannot see and interact. It is the portion of software that does not
come in direct contact with the users. It is used to store and arrange data.

7. HTML
Prof. K. Adisesha
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HTML :
HTML stands for "Hyper Text Markup Language".
➢ HTML developed by Tim Berners-Lee in 1990, which was officially published in 1995
as HTML 2.0, The latest version of HTML is HTML5.
➢ HTML is a simple markup language used to create or develop static web pages. A web
page is a document that provides specific information to the user via a web browser
(eg: Chrome, IE, etc.,).
➢ Web pages can either be static or dynamic. Static pages display the same content every
time we visit. These pages are written in HTML.
➢ In Dynamic Every time a page is accessed, its content is altered. Typically, these pages
are created in scripting languages like PHP, ASP, JSP, etc,.

8. Introduction
Prof. K. Adisesha
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HTML :
Features of HTML
➢ HTML is used to create or develop static web documents or web pages.
➢ HTML documents are plain text files, these are created by using text editor like
notepad.
➢ HTML is HyperText language because it supports font styled text, pictures, audio,
video, graphics and animations.
➢ HTML is Markup language, which provides a set of tags suitable for making up
webpages.
➢ HTML is not a case-sensitive and it does not generate errors.
➢ HTML is a tag-based system. A tag is a special instruction for browser. A tag is made
up of left operator(<), right operator(>) and a tag name between these two operators.

9. HTML
Prof. K. Adisesha
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HTML :
Structure of HTML Document
➢ All HTML documents does follow some basic structure. It has two blocks
➢ The Head block contains control information and title of document.
➢ The Body block contains content that displayed on screen as well as tags which control
how that content is formatted by browser.
➢ The Basic HTML document is:
➢ format : <html>
<head>
<title>A HTML Document</title>
</head>
<body>
Welcome to HTML
</body >
</html>

10. HTML
Prof. K. Adisesha
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Basic HTML Tags :
TAG DESCRIPTION
<html> Describes an HTML document.
<head> Represents head section of the HTML document.
<title> Describes the title of HTML document.
<body> Describes content of the document.
<!--...--> This tag is used to insert comment inside document code.
<H1> ……<H6> Describes the heading of HTML document.
<P> Describes the Paragraph of HTML document.
<table> To define a Table in HTML.

11. Script
Prof. K. Adisesha
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HTML Script:
The HTML <script> tag is used to define a client-side script (JavaScript).
➢ The <script> element either contains script statements, or it points to an external script
file through the src attribute.
➢ Common uses for JavaScript are image manipulation, form validation, and dynamic
changes of content.
<html>
<body>
<h1>The script element</h1>
<p id="demo"></p>
<script>
document.getElementById("demo").innerHTML = "Hello Dr. K. Adisesha!";
</script>
</body>
</html>

12. Script
Prof. K. Adisesha
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Client-side and Server-side Scripts:
On a dynamic website there are client -side and server -side scripts. Client-side and
server-side are sometimes referred to as front-end and back-end.
➢ The client-side of a website refers to the web browser and the server-side is where the
data and source code is stored.
➢ The client-side programming languages are HTML, CSS, and JavaScript.
➢ The server-side scripting programming languages, including PHP, ColdFusion, Python,
ASP.net, Java, C++, Ruby, C#
➢ A server-side script communicates with the server when it is executed.

13. Script
Prof. K. Adisesha
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Client-side and Server-side Scripts:
On a dynamic website there are client -side and server -side scripts. Client-side and
server-side are sometimes referred to as front-end and back-end.
➢ The client-side of a website refers to the web browser and the server-side is where the
data and source code is stored.
➢ When to use Client-side and Server-side Scripting.
➢ A site such as Google, Amazon, and Facebook will use both types of scripting:
❖ Server-side handles logging in, personal information and preferences and provides
the specific data which the user wants (and allows new data to be stored).
❖ Client-side makes the page interactive, sorting data in different ways if the user
asks for that by clicking on elements with event triggers.

14. Script
Prof. K. Adisesha
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Client-side scripts:
Client-side means that the processing takes place on the user's computer.
➢ It requires browsers to run the scripts on the client machine without involving any
processing on the server.
➢ Advantages of Client-side Scrips:
❖ Allow for more interactivity by immediately responding to users’actions.
❖ Execute quickly because they do not require a trip to the server.
❖ May improve the usability of Web sites for users whose browsers support scripts.
❖ Can give developers more control over the look and behaviour of their Web widgets.
❖ Can be substituted with alternatives (for example, HTML) if users’ browsers do not
support scripts
❖ Are reusable and obtainable from many free resources.

15. Script
Prof. K. Adisesha
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Advantages and disadvantages of client-side scripts:
➢ Disadvantages of Client-side Scripts:
❖ Not all browsers support scripts, therefore, users might experience errors if no
alternatives have been provided.
❖ Different browsers and browser versions support scripts differently, thus more quality
assurance testing is required.
❖ More development time and effort might be required (if the scripts are not already
available through other resources).
❖ Developers have more control over the look and behaviour of their Web widgets;
however, usability problems can arise if a Web widget looks like a standard control but
behaves differently or vice-versa.

16. Script
Prof. K. Adisesha
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Server-side scripts:
Server-side means that the processing takes place on a web server.
➢ Advantages of Server-side Script:
❖ User can create one template for the entire website
❖ The site can use a content management system which makes editing simpler.
❖ Generally quicker to load than client-side scripting
❖ User is able to include external files to save coding.
❖ Scripts are hidden from view so it is more secure. Users only see the HTML output.
➢ Disadvantages of Server-side Script:
❖ Many scripts and content management systems tools require databases in order to store dynamic data.
❖ It requires the scripting software to be installed on the server.
❖ The nature of dynamic scripts creates new security concerns, in some cases making it easier for
hackers to gain access to servers exploiting code flaws.

17. .NET framework
Prof. K. Adisesha
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.NET framework :
.NET is a framework to develop software applications. It is designed and developed by
Microsoft and the first beta version released in 2000.
➢ It is used to develop applications for web, Windows, phone. Moreover, it provides a
broad range of functionalities and support.
➢ This framework provides various services like memory management, networking,
security, memory management, and type-safety.

18. .NET framework
Prof. K. Adisesha
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.NET framework :
The .NET Framework is composed of four main components:
➢ Common Language Runtime (CLR)
➢ Framework Class Library (FCL),
➢ Core Languages (WinForms, ASP.NET, and ADO.NET)
➢ Other Modules (WCF, WPF, WF, Card Space, LINQ, Entity Framework, Parallel
LINQ, Task Parallel Library, etc.)

19. .NET framework
Prof. K. Adisesha
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.NET framework :
.NET is a framework to develop software applications. It is designed and developed by
Microsoft and the first beta version released in 2000.
➢ Various components that are present in
.NET Framework based on version are:

20. .NET framework
Prof. K. Adisesha
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.NET framework :
The .NET Framework is composed of four main components:
➢ Common Language Runtime (CLR)
❖ It is a program execution engine that loads and executes the program. It converts the
program into native code.
❖ It acts as an interface between the framework and operating system. It does exception
handling, memory management, and garbage collection. Moreover, it provides
security, type-safety, interoperability, and portability.
❖ A list of CLR components are given below:

21. .NET framework
Prof. K. Adisesha
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.NET framework :
The .NET Framework is composed of four main components:
➢ Framework Class Library (FCL)
❖ It is a standard library that is a collection of
thousands of classes and used to build an
application.
❖ The BCL (Base Class Library) is the core of the
FCL and provides basic functionalities.

22. .NET framework
Prof. K. Adisesha
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.NET framework :
The .NET Framework is composed of four main components:
➢ Core Languages (WinForms, ASP.NET, and ADO.NET)
➢ WinForms: Windows Forms is a smart client technology for the .NET Framework, a set of
managed libraries that simplify common application tasks such as reading and writing to the file
system.
➢ ASP.NET: ASP.NET is a web framework designed and developed by Microsoft. It is used to
develop websites, web applications, and web services. It provides a fantastic integration of
HTML, CSS, and JavaScript. It was first released in January 2002.
➢ ADO.NET: ADO.NET is a module of .Net Framework, which is used to establish a connection
between application and data sources. Data sources can be such as SQL Server and XML. ADO
.NET consists of classes that can be used to connect, retrieve, insert, and delete data.

23. .NET framework
Prof. K. Adisesha
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.NET framework :

24. Discussion
Prof. K. Adisesha (Ph. D)
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Queries ?
Prof. K. Adisesha
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