>Is it possible to call the valid event of the active cell in grid Valid event? If it is, please show how. Thanks in advance.

This.Column1.Text1.Valid() && if focus is in the grid
This.Valid() && if focus is in the actual cell
ThisForm.Grid1.Column1.Text1.Valid() && if focus is not on the grid

Substitute *ThisForm* with whatever the actual container of the grid is.