listbox filtering via textbox

I have a listbox set as multiselect that looks at a worksheet that contains in excess of 11,000 items. I would like a way to filter down this list by the entry a user types either via a textbox or some other way.

Any one done this

is this on a UserForm/

Originally Posted by royUK

is this on a UserForm/

No it's on a spreadsheet

You need to add an example workbook.

What kind of ListBox?
Why bother with a ListBox, you can just use the sheet & AutoFilter