editing values in the datagrid with keyboard only

When you're editing in the datagrid and move between the columns and rows with the arrows, the next field automatically gets a 'select-all' on the value in that field. so if you start typing, the original text is erased as soon as you type the first character.
How can i get rid of the selection without using the mouse? It's very annoying that everytime i want to 'adjust' a value i have to grab the mouse and click on the field to deselect it.

If you use your right-arrow key to move thru the fields, when you're finally at the field you want, just hit your ENTER key.

great, that's what i was looking for :-)
thnx