Combo Box Empty value.

[Guest]

Is there a way to add an empty value to a combo box. For instance, when a user clicks the combo box but then decides to not select anything?

[Guest]

You can set the prompt property of the comboBox and that will be what shows before the user makes a selection. You can do it either by code:

myCombo.prompt = "Hello There";

Or you can set it in the properties panel for the combo box.

[Guest]

I know about the "prompt" option. But once you click into the combo box and the dropdown appears the text in the prompt is gon and from that point you have to make a selection. What if you click and dont want either of the given options?

[Ned Murphy]

The behavior you describe is not what I find.  If you just click the combobox to open it, the prompt does not go away until you select something.

[Guest]

Sorry about the misunderstanding.What if you select something and wish to no longer have a selection. This combo box links to data that is optional.

[Ned Murphy · Accepted solution]

Then you are probably going to need to add a deselect option to the combobox that when selected will reset the selectedIndex to -1.  Per your earlier question you can add a  blank " " entry to the combobox, though it would likely be better to provide something that explains it as a choice.

I believe what is normally done in optional circumstances is that a checkbox is used to first specify that the option is desired, which in turn makes  the combobox appear.  Deselecting the option would drive the removal of the combobox.