Not existing value

[Simon]

Hi,

I want ask you that ...

I have a list box in a form and my question is that, how to cancel the new
value of the list box when the user gives a value which does’t exists in the
list.

Thankig you in advance for your collaboration

 

[Marshall Barton]

I have a list box in a form and my question is that, how to cancel the new
value of the list box when the user gives a value which does’t exists in the
list.

In a list box, users can not enter a value.

Sounds like you mean a combo box, in whiich case you can
just set the combo box's LimitToList property to Yes.