Should be an easy question. I have 2 listboxes on my form. What I am trying to do is the following. I am reading data from my serial port and adding it to listbox1 but I need to "pause" it some times so I have an invisible listbox2 also to which the data is then directed when in "paused" state. So how do I append all the data from listbox2 into listbox when "unpaused"?