piDogDataView.DataView.CellKeyDown
Scope: Public
Event CellKeyDown(row as integer, column as integer, key as String, edit as DesktopTextControl) As Boolean
Fired when the user is editing a cell. 
Access the edit parameter to check the entered value.
Return true to override
Example:
//Example to handle tabbing and skip column 4
if asc(key)=9 and column=3 then 
  me.EditCell(row,5)
  Return true
end if
//example to cancel an edit during keydown.
//will need to handle celldidedit as well
if key="~" then 
  me.EditCell(-1,-1)
  Return true
end if