I'm finishing an application and the UI of the approval was quite bad. Because the program is hitting production, I'm changing that UI. 

Ignore the foreign language, this is just a code+description form and the images don't sync with the action, the first one is adding and the second is editing.

Here is the old and shameful UI:

![Old](https://i.stack.imgur.com/4ZLPJ.png)

Here is the new UI:

![New, in english](https://i.stack.imgur.com/LSKpp.png)

Notice that I changed the way that the user can navigate, the old form was using arrows with first/previous/next/last actions. The new form uses a `TrackBar` with a count of the items (6).

Should I still use arrows? stick with the `TrackBar`? or maybe both?

EDIT
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Okay guys, my question is **Should I use a trackbar to let the user navigate to a next item of a list of itens and populate the form with the data at selected index?**