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GENERIC COLLECTIONS ASSIGNMENT

  🔷 1. 📚 Library Management System 🧾 Question Design a system to store books and their categories. Each book belongs to one category Display all books for a given category Find a book by ID ✅ Model Classes class Category { public int CategoryId { get ; set ; } public string CategoryName { get ; set ; } } class Book { public int BookId { get ; set ; } public string Title { get ; set ; } public string Author { get ; set ; } public Category Category { get ; set ; } } 🔷 2. 🛒 E-Commerce Order System 🧾 Question Design a shopping system where: A customer places orders Each order has multiple products Calculate total order amount Find a particular Order by ID ✅ Model Classes class Product { public int ProductId { get ; set ; } public string Name { get ; set ; } public double Price { get ; set ; } } class OrderItem { public Product Product { get ; set ; } public int Quantity { ...
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C# - PRIMITIVE DATATYPES

  📘 1. What are Primitive Data Types in C#? ✅ What Primitive data types are basic built-in types used to store simple values like numbers, characters, and true/false. 👉 Examples: int , double , char , bool ✅ Why use Primitive Data Types? ✔ Fast and efficient ✔ Directly supported by CPU ✔ Less memory usage ✔ Easy to use ❌ Why NOT (Limitations)? ❌ Cannot store complex data ❌ Fixed size (limited range) ❌ No advanced behavior like objects ✅ How to Use? // Syntax datatype variableName = value ; 📊 2. Common Primitive Data Types in C# Data Type Size Example Description int 4 bytes 10 Whole numbers float 4 bytes 10.5f Decimal numbers double 8 bytes 10.55 Large decimals char 2 bytes 'A' Single character bool 1 bit true True/False byte 1 byte 255 Small numbers 💡 3. Example Program with Comments using System ; namespace PrimitiveDemo { class Program { static void Main ( string [] args ) { // Integer ty...
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PRACTICE ASSIGNMENTS

  ✅ 1. Banking System (Accounts → Transactions) 🎯 Scenario Create a banking module where Account operations are defined in one namespace and Transaction reports in another . 📌 Requirements Namespace: BankCore Class: Accounts Method: public static void CheckBalance() Namespace: BankReports Class: TransactionReport Call CheckBalance() from BankCore Display: Available Balance: 50000 ✅ 2. Employee Payroll System 🎯 Scenario HR system where salary calculation is in one project and report generation in another 📌 Requirements Namespace: HRModule Class: Payroll Method: public static void CalculateSalary() Namespace: HRReports Class: SalaryReport Call method from HRModule Add another method: CalculateBonus() ✅ 3. E-Commerce Order System 🎯 Scenario Order processing and invoice generation handled separately. 📌 Requirements Namespace: OrderModule Class: OrderService Method: public static void CreateOrder()...
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FRAMEWORK, . NET FRAMEWORK AND .NET CORE

  📘 1. What is a Framework? ✅ What A framework is a pre-built structure (collection of libraries, tools, and rules) used to develop applications faster. 👉 Think of it like: A ready-made skeleton where you just add your logic. ✅ Why use a Framework? ✔ Saves development time ✔ Provides built-in features (security, database, UI, etc.) ✔ Standard structure (easy to maintain) ✔ Reduces coding effort ❌ Why NOT use a Framework? ❌ Less flexibility (must follow rules) ❌ Learning curve ❌ Can be heavy (performance overhead) ✅ How it works Framework provides base structure Developer writes custom code Framework handles common tasks 💡 Example (Without Framework vs With Framework) ❌ Without Framework // Everything must be written manually // Database connection, validation, UI logic, etc. ✅ With Framework // Framework provides ready-made methods Console . WriteLine ( "Hello Framework!" ); 📘 2. .NET Framework ✅ What .NET Framework is a...
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INTRODUCTION TO C#

📘 Introduction to C# ✅ What is C#? C# (C-Sharp) is a modern, object-oriented programming language developed by Microsoft. 👉 It is mainly used to build: Desktop applications Web applications APIs Enterprise software ✅ Why use C#? ✔ Simple and easy to learn ✔ Strongly typed (reduces errors) ✔ Supports Object-Oriented Programming (OOP) ✔ Works well with .NET ecosystem ✔ Widely used in industry ❌ Why NOT use C#? ❌ Not ideal for low-level system programming (like OS/kernel) ❌ Requires .NET runtime ❌ Less popular than JavaScript for frontend ✅ How C# Works (Basic Flow) Write code in .cs file Compile using .NET compiler Run → Output shown in console/app 📘 Core Concepts Explained 1️⃣ namespace ✅ What A namespace is a container for classes. ✅ Why Avoids naming conflicts Organizes code ✅ Example namespace MyApp { } 2️⃣ internal ✅ What An access modifier . ✅ Why Restricts access within the same project only ❌ Why not public? public exposes it ...
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