For a ComboBox, I want to be able to get the onTextChangedEvent Separate from the SelectedIndexChanged event. How do I do that with Vb

I can't get the onTextChanged event to fire without the SelectedIndexChanged event firing for some reason with a Combobox. What am  I doing wrong.
They both fire, or none fire, and the SelectedIndexChanged always fires first and then calls the onTextChanged Event.
Can I at least change the event order when firing?