Fifa,
As Rick says, the grid is just the visual presentation of the data in a table. So you need to change the data to alter what the grid shows.
There is a property of a grid called DeleteMark. This defaults to TRUE and you see a narrow column on the left side of the grid. Clicking in that column sets the underlying record as DELETED().
Then set the grid's RecordSource to an empty string [], then either pack the table, or re-run the view/selection and then set the RecordSource back again. That's the way I've done this sort of thing and it seems to work for me.
Hope that helps,
Stewart