Spinner (combobox) must not change it's content when user selects an option. 🙄

For example if by default it says: Select an option

If user selects an option from it's drop-down, text must not change and must always display: select an option.

Let's make a WPF apllication... They said.
Let's add a ScrollViewer... They said.
Let's put a DataGrid inside the ScrollViewer... They said.
Let's disable scrollwheel on the DataGrid... They said.
Let's add a UserControl to a ColumnTemplate in the DataGrid... They said.
Let'a put a ComboBox with a custom template inside the UserControl... They said.

Now let's hope nobody tries to use the scrollwheel on the ComboBox.

Now I have to convince somebody that it's pretty much impossible to enable scrollwheel on the ComboBox.

Once I had to style comboboxes with only css so that they would look equal on all browsers... Equal meant they would look like the IE comboboxes with 2 pixel fugly borders, a gray focus state that felt more like a disabled state to me ... And it was horrible!

Why is a ComboBox or Select in Android named as Spinner?

visual basic dotnet
ComboBox and ListBox both have Items property, and also both are descendants from ListControls
but ListControls have no Items property
do those developers understand object oriented programming correctly?