Using statement to connect to database

use using keyword to connect to database.

using System.Data;
using System.Data.SqlClient;
String conString = "Data Source=SERVER;UID=user;PWD=passsword Integrated Security=True;";

using (SqlConnection sqlCon = new SqlConnection (conString))
   {
   sqlCon.Open();
   DataTable tblDatabases = sqlCon.GetSchema ("Databases");
   sqlCon.Close();

   foreach (DataRow row in tblDatabases.Rows)
   {
      Console.WriteLine ("Database: " + row["database_name"]);
   }
}