Since WPF is "carefree", you can display your list items in any form. there may or may not be a text element.
MyCombo.SelectedText it makes no sense if, for example, you see icons on it.
What you want is ComboBox.SelectedItemand then access to your object. for example, if you are using a backup list of People objects ....MyComboBox.SelectedItem.PersonName
, SelectedItem .