combobox in grid

[Fonnit]

Hi all,
I have a combobox that has two values in my grid using Extjs 4.

　　valuefield / displayfield
①　1 / ""
②　2 / ○

I can not select ① in my grid because there is no value displayed in the list...
Please help me...

[sword-it]

Hi fonit,

I'm not sure what are you trying to do here, if you have empty displayField then you can't select that item.
See the sample combobox example -
http://jsfiddle.net/maneeshgo/cEbTK/

[Fonnit]

Hi sword-it,
thanks for your example.

i want to select the value that is empty in the combobox.....

my questions :
1)why empty displayField can not be selected ?
2)the empty displayField item's height is too short. how do i change the height of that item?
02.png

[friend]

As an alternative, consider using the emptyText property on your combobox config. If no selection is made, the combo's value will remain empty/null.

[droessner]

Try setting the display value of your first item to '\u00a0' instead of an empty string.