How to set Query fields which you needed by BODO in DataBlock

It's Easy. There is sample code for note.

        Users users = new Users();
        DatabaseField[] queryFields =
        {
            users[Users .UsersFields .UserCName ],users[Users .UsersFields .UserId ],
            users [Users .UsersFields .UserType],users[Users .UsersFields.XStatus ],
            users [Users .UsersFields .Title ],users [Users .UsersFields .UserEName ]
        };

QueryCriteria qc = new QueryCriteria(users.TableName, queryFields);

UsersBusinessObject usersBO = new UsersBusinessObject();

DataTable dt = usersBO.GetDataTable(qc);

And Now,This DataTable just contain those column in queryFields.

So,it is just like BO.Update(qc);

....

DatabaseField[] updateFields =
        {
           ui[Users .UsersFields .Address],ui[Users .UsersFields.Title] ,
           ui[Users .UsersFields.DOB ],ui[Users .UsersFields .City ],
           ui[Users .UsersFields .EMail ], ui[Users .UsersFields .Fax ],
           ui[Users .UsersFields .OrgPosition ],ui[Users .UsersFields .LastLoginDate ],
           ui[Users .UsersFields .Country ],ui[Users .UsersFields .Postalcode ],
           ui[Users .UsersFields .Province ],ui[Users .UsersFields .Education ],
           ui[Users .UsersFields .OrgAddress ],ui[Users .UsersFields .OrgCity ],
           ui[Users .UsersFields .OrgName ],ui[Users .UsersFields .OrgCountry],
           ui[Users .UsersFields .OrgPostalcode ], ui[Users .UsersFields .UserType],
           ui[Users .UsersFields .Phone ], ui[Users .UsersFields .UserCName ],
           ui[Users .UsersFields .OrgProvince ]
        };
        QueryCriteria qc = new QueryCriteria(ui.TableName, updateFields);