TextBox AutoComplete Not working properly

Question

I am trying to implement a textbox autocomplete with a custom datasource in the form of an array which shows suggestions on single character input. But when i run the progra

Answer 1

If 'arr' is empty when you initialize the textbox then there is nothing to compare to. You have to initialize AutoCompleteCustomSource to a valid array before you start typing. You are initializing in textchange event, when the user has already typed a character.

You need to populate the namesCollection before the code is changed - in Initialize.