I m using ultraGrid and bind a datasource to it.but i add 2 extra column in ultragrid other than datasource..but when i apply groupby on one column of ultragrid.It does not apply on those columns that are not part of datasource...So values are disturbed of this column.plz tel me the solution that group by also apply on these 2 columns..cuz i m applying group by on ultragrid ,not on datasource ...