C# Language Evolution

Concepts of Programming Languages Research

Prof. Khaled Nasser ElSayed

Presented by: [Your Group Names] | Section: [Your Section]

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The Foundation of C

Part I: History, Environment, and Classification

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Development History

• Year: Announced in 2000; Released in 2002.
• People: Lead by Anders Hejlsberg and his team.
• House: Developed by Microsoft Corporation.
• Environment: Integrated with .NET Framework & Visual Studio IDE.

(Source: en.wikipedia.org)

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Domain and Category

Language Category:

C# is a Multi-paradigm language, which perfectly supports: * Object-Oriented (OO) programming. * Functional & Generic structures. * Event-driven & Imperative styles.

Language Domain:

• Web Dev: ASP.NET Core framework.
• Desktop Applications: Windows Forms and WPF.
• Gaming Domain: The core language for Unity Engine.

(Source: learn.microsoft.com)

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Goals, Concerns & Success

• Language Goals: Designed to create a simple, modern, safe, and fully object-oriented language to improve developer productivity.
• Primary Concerns: Focused on security, managed memory control via Garbage Collection, and establishing platform independence.
• Major Success: Ranked among the top 5 languages globally; completely dominates enterprise ecosystems and modern game development.

(Source: learn.microsoft.com)

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Special Innovations

What makes C# unique?

• LINQ (Language Integrated Query): Allows native, elegant queries directly inside data collections.
• Async / Await: Simplified asynchronous programming to easily manage heavy operations.
• Properties Syntax: Elegant wrapper construction for encapsulation without boilerplate methods.

(Source: learn.microsoft.com)

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Language Mechanics

Part II: Overview, Syntax, and Practical Examples

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Overview & Execution

The .NET Ecosystem

C# code does not compile directly to machine code. Instead, it compiles to Intermediate Language (IL), which safely executes on the Common Language Runtime (CLR).

• Type-safe execution.
• Automatic memory management.
• Built-in robust standard library.

(Source: learn.microsoft.com)

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Major Parts & Commands

• Namespace: Organizes code logically (e.g., using System;).
• Class Blueprint: The essential block to build objects (e.g., class MyClass { }).
• Methods: Blocks of instructions designed to perform tasks (e.g., void SayHello()).
• Standard I/O: Console interaction commands (e.g., Console.WriteLine();).

(Source: learn.microsoft.com)

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Code in Action

Hello World & LINQ Snippet

// Standard Output
Console.WriteLine("Hello, Course!");

// LINQ Data Filtration Example
var res = data.Where(x => x.Price > 10);