DragItem.OnDrag C# (CSharp) Method

    public void OnDrag(PointerEventData data)
    {
        if (rectTransform == null)
            return;

        if (data.button == PointerEventData.InputButton.Left && transform.parent.GetComponent<CraftResultSlot>() == null)
        {
            rectTransform.SetAsLastSibling();
            transform.SetParent(draggedItemBox);
            Vector2 localPointerPosition;
            canvasGroup.blocksRaycasts = false;
            if (RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransformSlot, Input.mousePosition, data.pressEventCamera, out localPointerPosition))
            {
                rectTransform.localPosition = localPointerPosition - pointerOffset;
                if (transform.GetComponent<ConsumeItem>().duplication != null)
                    Destroy(transform.GetComponent<ConsumeItem>().duplication);
            }
        }

        inventory.OnUpdateItemList();
    }