Well I have a combobox with 3 items namely: Product Size and Cost.



I have also a maskedtextbox.



If I select "Product" and "Size" on the combobox, I want to disable the maskedtextbox from filling, how must I do it?

in the ComboBox_OnClick sub add code like this

If combobox.listindex>-1 then

textbox.enabled=false

else

textbox.enabled=true

end if

whenever the user clicks on the combobox to change its value the textbox will be diabled if an item in the combobox list is selected. If in another section of your code somethiong resets or clears the combobox be sure to add in code to re enable the textbox.

Oops sorry didnt read your post properly

Change the If Staetment to read

If Combobox.listindex >-1 and Combobox.listindex<2 then

that will refine the lockout to the 1st 2 items on the list but leave the texbox open on the 3rd item

Yes I did it dear...it works thank you very much you are great!