How to filter Combobox items on "OnChangeEvent"?

Hi folks:

I want to know how can I omit combox's items based on entered
value in edit section of combobox.assume that I have a combobox with these items:

1.Bob
2.David
3.Dan
4.Frank
5.Jack
6.John
7.Mary
8.Marley
9.Sara
10.Susan

I want that when I type for example Letter M,combobox shows
just those items which starts with letter M...

How can I do this?

Thanks in advance.

First clear your list and build it up again ...

But where do you get your data from?

Personally, I think this is a bad approach. What if I make a typo? Now I can't see items beginning with another letter. There is a better way around this issue. The default combo box component already does something very nice. When you type the first letter, it scrolls down to the first item that starts with that letter. When you type the second letter, it scrolls down to the first item that begins with those two letters. All you have to do is ensure that the list of items is sorted in alphabetical order.

just add this. I put it in the page load

combobox1.AutoCompleteMode = AutoCompleteMode.Suggest
combobox1.AutoCompleteSource = AutoCompleteSource.ListItems