Scroll Rect manual scrolling through script Unity C#

Question

I want to make a C# script for Unity to make the scroll view scroll up when I press "UP" key and scroll down when I press "DOWN" key.

Answer 1

Simply use

ScrollRect.horizontalNormalizedPosition // value range (0 to 1)

or

ScrollRect.verticalNormalizedPosition // value range (0 to 1)

try to lerp these values accordingly on button click event handlers for up and down buttons.

Or you can have a look at scripts HorizontalScrollSnap.cs and VerticalScrollSnap.cs at UnityUI-Extentions

Answer 2

The other answers seemed incomplete or overly complex, so here's how I did it. Assuming scroll is the direction you want to scroll, speed is a property that controls your scroll speed in content units/sec, and scrollRect is a reference to the ScrollRect component:

        if (scroll != 0) {
            float contentHeight = scrollRect.content.sizeDelta.y;
            float contentShift = speed * scroll * Time.deltaTime;
            scrollRect.verticalNormalizedPosition += contentShift / contentHeight;
        }

This should shift the right amount for any content size, and correctly causes the elastic rebound at the top and bottom (if your ScrollRect is configured for that).