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ADO.NET | What is ADO.NET? - .Net Notes in English Notes

Introduction of ADO.NET in Hindi | Introduction to ADO.NET:

ADO.NET (ActiveX Data Objects .NET) is a data access technology developed by Microsoft, which is part of the .NET Framework.
It is used to access and manage data from a database. ADO.NET supports a disconnected architecture, which makes it fast and effective.
It can be used with SQL Server, Oracle, OLE DB, and XML data sources.
ADO.NET is an important part of the .NET Framework that provides the facility to interact with a database efficiently.
Due to its disconnected architecture and object model, it is suitable for handling data easily.
ADO.NET is mainly useful for reading, writing, updating, and deleting data.

Features of ADO.NET in Hindi | Features of ADO.NET:

Disconnected Architecture: Allows caching data and using it later.
Data Provider: Different class libraries for interfacing with data sources.
XML Support: Facility to read and manipulate data with XML.
Scalability: Capable of working with large amounts of data.

Data Providers in ADO.NET in Hindi | Data Providers:

ADO.NET data providers are used to connect to a database and access data. Each provider works with a specific data source.

Main Data Providers in ADO.NET in Hindi | Main Data Providers:

SQL Server Data Provider: For SQL Server.
Namespace: System.Data.SqlClient
OLE DB Data Provider: For other OLE DB compatible data sources.
Namespace: System.Data.OleDb
ODBC Data Provider: For ODBC compatible data sources.
Namespace: System.Data.Odbc
Oracle Data Provider: For Oracle Database.
Namespace: System.Data.OracleClient

ADO.NET Objects in Hindi | ADO.NET Objects:

There are various objects in ADO.NET to handle data.

Connection Object: Creates a connection with the data source.
Example: SqlConnection
Command Object: Executes SQL commands.
Example: SqlCommand
DataReader Object: Reads data in a forward-only manner.
Example: SqlDataReader
DataAdapter Object: Acts as a bridge between the data source and the DataSet.
DataSet Object: Caches disconnected data.

Program of ADO.NET in Hindi | ADO.NET Programs in C#:

Reading data from SQL Server in Hindi | Reading data from SQL Server:

using System;

using System.Data.SqlClient;

class Program

{

static void Main()

{

string connectionString = "Data Source=YOUR_SERVER;Initial Catalog=YOUR_DATABASE;Integrated Security=True";

string query = "SELECT * FROM Students";

using (SqlConnection connection = new SqlConnection(connectionString))

{

SqlCommand command = new SqlCommand(query, connection);

connection.Open();

SqlDataReader reader = command.ExecuteReader();

while (reader.Read())

{

Console.WriteLine($"ID: {reader["ID"]}, Name: {reader["Name"]}, Age: {reader["Age"]}");

}

reader.Close();

}

Data Inserting:

using System;

using System.Data.SqlClient;

class Program

{

static void Main()

{

string connectionString = "Data Source=YOUR_SERVER;Initial Catalog=YOUR_DATABASE;Integrated Security=True";

string query = "INSERT INTO Students (Name, Age) VALUES (@Name, @Age)";

using (SqlConnection connection = new SqlConnection(connectionString))

{

SqlCommand command = new SqlCommand(query, connection);

command.Parameters.AddWithValue("@Name", "Rahul");

command.Parameters.AddWithValue("@Age", 20);

connection.Open();

int rowsAffected = command.ExecuteNonQuery();

Console.WriteLine($"{rowsAffected} row(s) inserted successfully.");

}

Data Update:

using System;

using System.Data.SqlClient;

class Program

{

static void Main()

{

string connectionString = "Data Source=YOUR_SERVER;Initial Catalog=YOUR_DATABASE;Integrated Security=True";

string query = "UPDATE Students SET Age = @Age WHERE Name = @Name";

using (SqlConnection connection = new SqlConnection(connectionString))

{

SqlCommand command = new SqlCommand(query, connection);

command.Parameters.AddWithValue("@Name", "Rahul");

command.Parameters.AddWithValue("@Age", 21);

connection.Open();

int rowsAffected = command.ExecuteNonQuery();

Console.WriteLine($"{rowsAffected} row(s) updated successfully.");

}

ADO.NET | What is ADO.NET?

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Introduction of ADO.NET in Hindi | Introduction to ADO.NET:

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