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hi all, I have displayed the result of 8 queries in the datagridview by putting all the query in the datatable with the caption (to add it as heading within the datagridview to seperate the resultset of each of te queries) and then executing it in loop. I want to implement a functionality on column of DataGridView should collapse the columns and show a plus sign on the column. On clicking the + sign the column should expand. + Caption1 - Caption2 Inv no product stk123 ABC-1 stk234 XYZ-1 stk345 MNO-2 stk456 WOR-4 + Caption3 ........................... ........................... + Caption8 thanks in advance