Introduction

In this lesson, you will learn Entity Framework in .NET for beginners. Entity Framework (EF) is an ORM (Object Relational Mapper) that helps you interact with databases using C# instead of writing SQL queries.

What is Entity Framework?

Entity Framework allows you to work with databases using objects and classes instead of writing raw SQL.

Why Use Entity Framework?

• Reduces SQL code
• Faster development
• Easy database operations
• Strong integration with .NET

Example without Entity Framework

SELECT * FROM Students;

Example with Entity Framework

var students = context.Students.ToList();

DbContext and DbSet

DbContext

Represents the database connection.

DbSet

Represents a table in the database.

public class AppDbContext : DbContext
{
    public DbSet<Student> Students { get; set; }
}

Basic CRUD Example

// Create
context.Students.Add(new Student { Name = "Rahul" });
context.SaveChanges();

// Read
var data = context.Students.ToList();

// Update
var student = context.Students.Find(1);
student.Name = "Amit";
context.SaveChanges();

// Delete
context.Students.Remove(student);
context.SaveChanges();

Real-World Use

• Used in web applications
• Simplifies database operations
• Used in enterprise software

Key Points

• Entity Framework replaces raw SQL
• Uses C# classes for database operations
• Makes development faster and cleaner

Internal Links

• Course Page: .NET Course for Beginners