ADO.NET Tutorial: Accessing and Manipulating Data in .NET Applications

Learn how to use ADO.NET to interact with various data sources in your .NET applications. This tutorial covers connecting to databases, executing queries, handling data, and managing transactions, providing a comprehensive guide for both beginner and experienced .NET developers.

ADO.NET Tutorial Overview

Introduction to ADO.NET

ADO.NET (ActiveX Data Objects .NET) is a set of .NET Framework classes used to access and manipulate data from various data sources, such as SQL Server databases and XML files. It's a crucial technology for building data-driven applications in C# and other .NET languages. It provides tools to connect to databases, execute queries, manage data, and handle transactions.

What ADO.NET Offers

ADO.NET provides the necessary tools for working with data:

  • Data Providers: Provide ways to connect to specific data sources (e.g., SQL Server, Oracle, etc.).
  • Connection Objects: Establish connections to databases.
  • Command Objects: Execute SQL queries and stored procedures.
  • DataReader Objects: Efficiently read data from a database (forward-only, read-only).
  • DataSet Objects: In-memory representation of data; allows disconnected access to data.
  • DataAdapter Objects: Move data between a DataSet and a database.
  • DataTable Objects: Represent tables of data within a DataSet.

ADO.NET Tutorial Outline

This tutorial covers a wide range of ADO.NET topics:

  • Introduction to ADO.NET
  • ADO.NET Data Providers
  • Connecting to SQL Server
  • Working with Connection, Command, DataReader, DataSet, DataAdapter, and DataTable objects
  • Examples using ADO.NET in Web Forms and ASP.NET MVC applications
  • ADO.NET Interview Questions

Prerequisites and Audience

This tutorial assumes basic familiarity with C#. It's designed to benefit both beginners learning ADO.NET and experienced developers looking to refresh their knowledge or delve into more advanced concepts.