Actually, if you note many times here? I just use screentogif for my posts. It's quick and simple.
As I pointed out, the issue REALLY comes down to HOW you going to know when the user is finished typing.
So, for example, in this dropdown, I type in the letter K - and auto complete will match the first "K" value.
Ok, so I hit the letter K in above. But, how do we know if I want to keep on typing - or is the first "K" value what I want....
I of course can keep on typing, such as: "K", then "i".
The problem still remains - how to know when the user is finished typing.
So, as suggested here, user has to hit tab key - that that's going to be the case for web based, or desktop, and it's been that way since day one of the windows (and web) GUI (that's over 30 year now!!!!).
So, as some suggested here? I suppose a timer - but EVEN then, maybe I do have to type more, and narrow down some choices. With part descriptions or what not? Often there is going to be quite a bit of typing until such time the match is narrowed down, and as noted, maybe I'm already happy with the choice I narrowed down, but then again, maybe not.....
Anyway, as a tip, and how I been of late posting animated images in my posts such as above? I use the free screentogif - it's fast and easy....
(in fact, I dare say that to make this post - barely any different time and effort compared to if the above gifs not been included)
Edit: as George pointed out? It's near always a bad idea to try and override the default windows GUI standard specifications and behaviors- really, it is!
R
Albert