.NET is a free, cross-platform developer platform for building various applications, initially released in 2002 and evolved into .NET Core and unified under .NET 5. It includes a comprehensive architecture overview, installation guidance, programming basics, data handling with ADO.NET and Entity Framework, web app development with ASP.NET Core, deployment strategies, security measures, performance tuning, and best practices. Additionally, the document includes a case study to illustrate real-world .NET implementation challenges and solutions.

1. Introduction to .NET
Comprehensive Guide to the .NET Framework
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2. What is .NET?
Definition:
A free, cross-platform, open-source developer platform for
building many different types of applications.
History and development:
• Initially released by Microsoft in 2002 as the .NET
Framework.
• Evolved to .NET Core, a cross-platform framework, and
now unified under .NET 5 and later versions.
Key features:
Language interoperability, high performance, vast
ecosystem.
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3. .NET Architecture
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4. .NET Core vs .NET Framework
• .NET Core is cross-platform, .NET Framework is
Windows-only.
• Advantages of .NET Core: Better performance,
modularity, and support for microservices.
• When to use each: .NET Core for new projects and
cross-platform needs, .NET Framework for legacy
systems.
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5. Installing .NET
System requirements:
• Supported operating systems and hardware.
Installation steps on different platforms:
• Windows: Use Visual Studio Installer.
• macOS: Download and install .NET SDK.
• Linux: Use package managers like apt or yum.
Initial configuration:
• Set up environment variables, verify installation.
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6. Visual Studio Overview
Introduction to Visual Studio:
• An integrated development environment (IDE) from
Microsoft.
Installing Visual Studio:
• Download from the official website, choose workloads.
Basic features and navigation:
• Solution Explorer, code editor, debugging tools.
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7. Creating a .NET Project
Setting up a new .NET project:
• Choose a project template, configure settings.
Project templates:
• Console App, Web App, Class Library, etc.
Solution Explorer:
• Manages project files, references, and configurations.
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8. C# Programming Basics
Overview of C#:
• A modern, object-oriented programming language
developed by Microsoft.
Basic syntax and data types:
• Variables, data types (int, string, bool, etc.), operators.
Control structures:
• Conditional statements (if, switch), loops (for, while,
foreach).
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9. Object-Oriented Programming
(OOP)
Classes and objects:
• Define classes, create objects, access members.
Inheritance and polymorphism:
• Inherit from base classes, override methods, implement
interfaces.
Interfaces and abstract classes:
• Define contracts, provide base implementation.
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10. Exception Handling
Mechanism for handling runtime errors.
Try-catch blocks:
• Structure for catching and handling exceptions.
Custom exceptions:
• Define custom exception classes for specific error
scenarios.
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11. Working with Data
Introduction to ADO.NET:
• A data access technology for .NET.
Connecting to a database:
• Use connection strings, establish connections.
Performing CRUD operations:
• Create, Read, Update, Delete operations using
commands and data readers.
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12. Entity Framework
Overview of Entity Framework:
• An ORM (Object-Relational Mapper) for .NET.
Code-first and database-first approaches:
• Code-first: Define models in code, generate database
schema.
• Database-first: Generate models from existing database.
LINQ queries:
• Language Integrated Query for querying data in a type-
safe manner.
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13. ASP.NET Core
Introduction to ASP.NET Core:
• A cross-platform, high-performance framework for
building modern web applications.
Setting up a web application:
• Create a new project, configure startup settings.
MVC pattern:
• Model-View-Controller architecture for separation of
concerns.
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14. Web API Development
Creating a Web API:
• Set up controllers, define routes.
Routing and controllers:
• Map HTTP requests to controller actions.
Consuming Web APIs:
• Use HttpClient to make requests, handle responses.
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15. Deployment
Deploying .NET applications:
• Package applications for deployment.
Hosting options:
• Azure, AWS, on-premises servers.
CI/CD pipelines:
• Automate build, test, and deployment processes.
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16. Security in .NET
Authentication and authorization:
• Implement user authentication, role-based access
control.
Secure coding practices:
• Validate input, avoid common vulnerabilities.
Data protection:
• Encrypt sensitive data, use secure protocols.
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17. Performance Tuning
Analyzing performance:
• Identify performance bottlenecks using profiling tools.
Profiling tools:
• Visual Studio Profiler, dotTrace, etc.
Optimization techniques:
• Optimize code, use caching, improve database queries.
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18. Case Study
A real-world example of .NET implementation:
• Description of the project.
Challenges faced:
• Specific challenges encountered during development.
Solutions:
• How the challenges were addressed and resolved.
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19. Best Practices
• Code organization, use of design patterns, testing.
• Utilize tools and libraries, follow coding standards,
perform code reviews.
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20. Q&A
Open the floor for questions from the audience
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