public void AddCategory(Dropdown dropDown)
    {
        dropDownMenu = dropDown;
        CategoryPanel.SetActive(true);

        foreach (GameObject listObject in ObjectList.items)
        {
            GameObject             newTileItem    = ListItem;
            CategoryObjectListItem listItemScript = newTileItem.GetComponent <CategoryObjectListItem>();
            GameobjectListItem     listItem       = listObject.GetComponent <GameobjectListItem>();

            listItemScript.ObjectThumbnail.sprite = listItem.ObjectThumbnail.sprite;
            listItemScript.ObjectName.text        = listItem.ObjectName.text;
            listItemScript.Object = listItem.Object;
            listItemScript.Item   = listObject.GetComponent <GameobjectListItem>();

            newTileItem = Instantiate(newTileItem) as GameObject;
            newTileItem.transform.SetParent(Content.transform);
            newTileItem.SetActive(true);
        }
    }
 public void DeselectObject(CategoryObjectListItem listItem)
 {
     selectedItems.Remove(listItem);
 }
 public void SelectObject(CategoryObjectListItem listItem)
 {
     selectedItems.Add(listItem);
 }