public static SqlConnection hamketnoisql() { CauHinhServerBE server = new CauHinhServerBE(); CauHinhServerBL serverxuly = new CauHinhServerBL(); server = serverxuly.docdulieu(Environment.CurrentDirectory + "/CauHinhServer.xml"); return(new SqlConnection("server=" + server.Namer1 + ";database=" + server.Data1 + ";user id=" + server.User1 + ";password="******"")); }