What is Entity Framework Core? See Example

Entity Framework (EF) Core is a modern Object-Relational Mapper (ORM) for ASP.NET Core. It allows developers to interact with databases using C# objects instead of writing raw SQL queries. EF Core supports LINQ queries, migrations, and database management, making data handling easier and more efficient.

Key Features:

• Code-first or database-first approach
• Supports LINQ queries for data manipulation
• Automatic database migrations
• Cross-platform support
• Integration with ASP.NET Core apps

Example:
A simple model and DbContext example:

public class Student
{
    public int Id { get; set; }
    public string Name { get; set; }
}

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

Adding a student to the database:

using(var context = new AppDbContext())
{
    context.Students.Add(new Student { Name = "John Doe" });
    context.SaveChanges();
}

EF Core is widely used in ASP.NET Core apps to simplify database operations and maintain clean, testable code.

Citations:

• Learn more on Savanka
• Official ASP.NET Core Documentation