System.Windows.Forms.ListView.Redraw C# (CSharp) Method

		internal void Redraw (bool recalculate)
		{
			// Avoid calculations when control is being updated
			if (updating)
				return;
			// VirtualMode doesn't do any calculations until handle is created
			if (virtual_mode && !IsHandleCreated)
				return;
			//TODO: invalidate
		}

        public int Add(ListViewGroup group)
        {
            if (Contains(group))
            {
                return(-1);
            }

            AddGroup(group);

            if (this.list_view_owner != null)
            {
                list_view_owner.Redraw(true);
            }

            return(list.Count - 1);
        }