Can anyone provide me with a code example of how to use a datetimepicker cell in datagridview where in the datetimepicker column i can set the value of any cell to null or to any datetime according to my choice. And the format of the datetimepicker cell should be dd MMM yyyy. I checked a lot of examples in the forums including articles by Nils Jonsson, Pham Minh Tri and Claudio Grazioli but none of them works when the DGV is databound. It works till u can select a date in a blank cell and save it. But when u try to delete an existing date from a cell it generates error saying 'Formatted value of the cell has a wrong type'. There's no way I can set a null value in a databound cell. I'm fed up of this. Plz help.