请教:无法应用于“string”和“int”类型的操作数


  int  flag = int.Parse(cm.ExecuteScalar().ToString()); 
                        if(flag> 0)                                 { 
                                        Response.Write( " <script   language=javascript> alert( '注册成功 ') </script> "); 
                                    
                                } 
                                else 
                                {                                         Response.Write( " <script   language=javascript> alert( '注册失败！请检查输入是否符合要求 ') </script> "); 
                                } 
                                cm.Connection.Close();