Telerik radgridview cell co-ordinates in c# winforms -

i want show specific date time picker control on particular cell in telerik radgridview in c# windows form. need know co-ordinates of particular cell relative form. don't want set full column datetimepicker since datatype won't fixed rows of particular column. how can retrieve current cell co-ordinates can show separate datatimepicker control @ position?

radgridview uses editors cells. achieve scenario should create custom editor , assign editor in editorrequired event particular cell. here article telerik ui winforms documentation says how can create , use custom editor: http://www.telerik.com/help/winforms/gridview-editors-using-custom-editors.html