Connection Class in c# windows form

//Method one

using System.Data.SqlClient;
 
class myConnection
    {
        public static SqlConnection GetConnection()
        {
            string str = "Data Source=MANOZ\\SQLEXPRESS;Initial Catalog=softworksbd;Integrated Security=True;";
 
            SqlConnection con = new SqlConnection(str);
            con.Open();
            return con;
        }
    }