At coding time, I developed several combo boxes and added items to them in a collection.

I want to preclude the user from changing the contents of the text when they select an item. That is, I want to limit them to the items on the list and preclude them from changing the item name.

I have users that select "Park" from the dropdown and then make a mistake and either clear the box or change "Park" to "Prk" or similar.

There must be a property I am overlooking someplace.... easy for you guys, I just don't code this much for a living

I want to thank you all for allowing me to advertise my ignorance.
All I had to do was change the "DropDown Style" property from the default to Drop Down List.

See....

Never let the software win.