CSHARP

set width of rect transform unity

rectTransform.sizeDelta = new Vector2(50, 50);

how to change rect transform width or height from unity

How Can I modify the width and height of RectTransform ?

RectTransform rt = gameObjectName.GetComponent (typeof (RectTransform)) as RectTransform;
rt.sizeDelta = new Vector2 (100, 100);