Introduction

Explain that .NET provides multiple ways to access databases, and choosing the right one affects performance, maintainability, and development speed.

What is ADO.NET?

Explain:

Direct database access
SQL commands
SqlConnection
SqlCommand
SqlDataReader

Example:

using SqlConnection con = new(connectionString);
con.Open();

SqlCommand cmd = new("SELECT * FROM Employees", con);

SqlDataReader reader = cmd.ExecuteReader();

What is Entity Framework Core?

Explain:

Object-Relational Mapper (ORM)
Works with C# classes
LINQ queries
Automatic change tracking

Example:

var employees = await context.Employees.ToListAsync();

Feature Comparison

Create a table comparing:

Learning curve
Performance
Development speed
SQL control
Migrations
Change tracking
Maintainability

Performance Comparison

Explain when ADO.NET is faster and when EF Core's productivity outweighs the overhead.

Advantages of ADO.NET

Maximum performance
Full SQL control
Minimal abstraction
Good for reporting and bulk operations

Advantages of EF Core

Less code
LINQ support
Automatic tracking
Easier maintenance
Database migrations

When to Use ADO.NET

Examples:

Large reports
Stored procedures
High-performance APIs
Bulk data processing

When to Use EF Core

Examples:

CRUD applications
Business applications
Rapid development
Small to medium projects

Can You Use Both Together?

Explain that many enterprise applications use EF Core for CRUD operations and ADO.NET or stored procedures for performance-critical queries.

Best Practices

Use EF Core for productivity.
Use ADO.NET for performance-critical scenarios.
Parameterize SQL queries.
Profile queries before optimizing.

Conclusion

Summarize that there is no single "best" option; the right choice depends on the application's requirements.

FAQ

Is EF Core slower than ADO.NET?
Should I learn ADO.NET before EF Core?
Can I use stored procedures with EF Core?
Can EF Core and ADO.NET be used in the same project?

🔗 Internal Links

Link to:

SQL Server CTE vs Temporary Tables
Async and Await in C#
ASP.NET Core Dependency Injection
C# Tutorials
.NET Tutorials