A SqlConnection object represents a unique session to a SQL Server data source. With a client/server database system, it is equivalent to a network connection to the server.

SqlConnection documentation from Microsoft was mentioned in another answer. What is missing is that does not need to be called if used in the following way (example is directly from the link above):

Dec 24, 2024 · We use SqlConnection in a "using" statement. The SqlConnection has a constructor that requires a string reference pointing to the connection string character data.

Aug 10, 2025 · Whether you're reading customer data or updating product inventories, this guide will walk you through how to use SqlConnection to establish reliable and effective communication with …

Feb 2, 2024 · This tutorial demonstrates how to connect to a SQL database on C# using SqlConnection object.

The SqlConnection class (typically from the Microsoft.Data.SqlClient namespace) in ADO.NET Core is used to establish and manage a session with a SQL Server database.

Jun 7, 2016 · SqlConnection objects let other ADO.NET codes know what database to connect to and how to make the connection. They are instantiated by passing a connection string with a set of …

We use SqlConnection in a "using" statement. The SqlConnection has a constructor that requires a string reference pointing to the connection string character data.

Jun 1, 2022 · This post demonstrates with an example how to connect to a MSSQL Database using the SqlConnection class and a valid connectionstring.

Aug 26, 2023 · The SqlConnection class from the System.Data.SqlClient namespace provides the necessary functionalities to connect to Microsoft SQL Server databases. This article will guide you …