juniorADO.NET
What is SqlConnection in ADO.NET?
Updated Feb 20, 2026
Short answer
SqlConnection represents a connection to a SQL Server database.
Deep explanation
It manages database sessions and uses connection strings. Supports connection pooling for performance.
Real-world example
Code Example
TypeScript
using (SqlConnection con = new SqlConnection("your_connection_string")){ con.Open();}Common mistakes
- Not using using statement
- Hardcoding connection strings
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