datagridview sort

[CICCIOLO69]

I have a datagridview bound to a dataview. The user click on a column : - add a sort column type system.int - set the dataview.sort to the column field clicked - add several datarows to the datatable ( partial total row ) - while adding the total rows update the column added at the beginning to a numeric sequential value ( 1,2,3,4,....) - when the rows end change the dataview.sort to the sort column If the user click to another column : - delete the rows that contains the total - redo everything for the new column that the user click on it The problem is that everything is ok, because I see in the datagrid the sort column added with the sequential correct value, but the dataview doesn't update . Can someone help ? Regards Andrew