>>>>I have a combo, .Style = 0-dropdown combo, .RowSourceType = 1-Value, Rowsource = TBD,N/A,VARIOUS, ControlSource = mytable.myfield. I thought that .Style = 0 meant that I could enter anything in the control, but it's not showing what I type, unless I select or type one of the three values in Rowsource. Since, for testing purposes, I have left in an old textbox with the same controlsource, I can see that values other than these three are not being saved to the table. What's going on?
>>>
>>>I guess, the problem originated from ControlSource. Personally, I don't use this property at all. Basically, combo will work this way:
>>>Combo.Lostfocus event:
>>>if this.dispalyvaluethis.value
>>>This.additem(this.displayvalue)
>>>endif
>>>Use Value property when you "Save" the record to fill appropriate field.
>>
>>I wasn't sure what "if this.dispalyvaluethis.value" meant.
>
>Yes, I just forgot that this is HTML and missed the symbol. Sorry, about this.
>
> Perhaps "if this.displayvalue # this.value". I didn't want to add items to my combobox, and I wasn't sure how .displayvalue was used here. My combo has only one column. I did try removing the .ControlSource and putting a REPLACE myfield WITH THISFORM.combo.Value. Now my typed value remains visible in the combo, but is still not added to the table.
>
>If you want to use existing items only, then set Style=2. If you want to type something else, you must add items to RowSource.

I want this control to display the value of the field during navigation, and offer a few choices: TBD, N/A, and VARIOUS when adding and editing. It sounds as if the dropdown combo with style=0 is useless, because of the requirement to always use .AddItem, which will not be possible when just navigating the table. Maybe I should superimpose a textbox and make the combo visible only in edit mode.

By the way, when I actually looked at the documentation, I noticed that it says to put the .AddItem in the .Valid, not .LostFocus. But I found that when I entered a value and then clicked on a nearby editbox, .Valid never fired, and the value was wiped out. I found no problem when I put the code in .LostFocus, as you said to do. It sounds as if you know more than the guy who wrote the book.