is there a differnce between connecting c# and sql by using

this method involving class

and using this method without class

?

1 using System; 2 using System.Collections.Generic; 3 using System.Ling 4 using System.Text; s using System. Threading. Tasks 6 using System.Data.SqlClient; using System.Data 8 namespace Products Management.DAL 1e class DataAccessLayer SqlConnection sqlconnection; 12 13 //This Constructor Inisialize the connection object public DataAccessLayer) 15 16 17 sqlconnection new Sqlconnection( Server.sQLEXPRESS; Database Prod