How to scroll to a specific element in ScrollRect with Unity UI?

Question

I built a registration form for a mobile game using Unity 5.1. To do that, I use Unity UI components: ScrollRect + Autolayout (Vertical layout) + Text (labels)

Answer 1

width signifiy the width of childern in scroll rect (assuming that all childerns width is same), spacing signifies the space between childerns, index signifies the target element you want to reach

public float getSpecificItem (float pWidth, float pSpacing,int pIndex) {
    return (pIndex * pWidth) - pWidth + ((pIndex - 1) * pSpacing);
}