public List <Login> ObtenerUsuario(string user, string password) { var list = new List <Login>(); string consulta = string.Format("select * from usuarios where user = '******' and password = '******'", user, password); var ds = _conexion.Buscar(consulta, "usuario"); var dt = ds.Tables[0]; foreach (DataRow row in dt.Rows) { var usuario = new Login { Id = row["id"].ToString(), User = row["user"].ToString(), Password = row["password"].ToString(), Nivel = row["nivel"].ToString() }; list.Add(usuario); } return(list); }