Combobox Resetting

[CornDog]

I have a aeries of combobox whos values are filled by code.
Suppose a user selects a value from several and wants to
go back and void his selections. Rather then having to
highlight the selection and erasing it I want a button to
reset the comboboxs to nothing.

I tried combobox.Requery but it doesnt remove the text.

What should I do?

 

[CornDog]

Got it! set them to null. doesnt seem like the right thing
but it works.